Updated on 2025/07/16

写真a

 
OKANO,Kenji
 
Organization
Faculty of Chemistry, Materials and Bioengineering Associate Professor
Title
Associate Professor
External link

Degree

  • 博士(工学) ( 2009.3   神戸大学 )

Research Interests

  • 合成生態学

  • Fermentation technology

  • Enzyme engineering

  • Synthetic bioengineering

  • Biochemical engineering

Research Areas

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Biofunction and bioprocess engineering

Education

  • Kobe University   Graduate School of Science and Technology

    2006.4 - 2009.3

      More details

  • Kobe University   Graduate School of Science and Technology

    2004.4 - 2006.3

      More details

  • Kobe University   Faculty of Engineering   Department of Chemical Science and Engineering

    2000.4 - 2004.3

      More details

Research History

  • JST・創発研究者

    2023.4

      More details

  • Kansai University   Department of Life Science and Biotechnology, Faculty of Chemistry, Materials and Bioengineering   Associate Professor

    2022.4

      More details

    Country:Japan

    researchmap

  • 大阪大学生物工学国際交流センター   招へい准教授

    2022.4 - 2024.3

      More details

    Country:Japan

    researchmap

  • Osaka University   International Center for Biotechnology   Assistant Proferssor

    2020.4 - 2022.3

      More details

    Country:Japan

    researchmap

  • Department of Biotechnology, Graduate School of Engineering, Osaka University   Assistant Professor

    2011.11 - 2020.3

      More details

  • Osaka University   Graduate School of Engineering, Division of Advanced Science and Biotechnology

    2011.4 - 2011.11

      More details

  • 日本水産株式会社   中央研究所   研究員

    2009.4 - 2011.3

      More details

  • 日本学術振興会特別研究員(DC2)

    2008.4 - 2009.3

      More details

  • Kobe University   Graduate School of Science and Technology

    2006.4 - 2009.3

      More details

  • Kobe University   Graduate School of Science and Technology

    2004.4 - 2006.3

      More details

  • Kobe University   Faculty of Engineering, Department of Chemical Science and Engineering

    2000.4 - 2004.3

      More details

▼display all

Professional Memberships

  • JAPAN SOCIETY FOR BIOSCIENCE, BIOTECHNOLOGY, AND AGROCHEMISTRY

      More details

  • JAPAN SOCIETY FOR LACTIC ACID BACTERIA

      More details

  • The Society for Biotechnology, Japan

      More details

  • Japanese Society of Enzyme Engineering

      More details

  • THE SOCIETY OF CHEMICAL ENGINEERS, JAPAN

      More details

Committee Memberships

  •   日本乳酸菌学会理事  

    2025.7 - Present   

      More details

  •   日本生物工学会 和文誌編集委員  

    2025.6 - Present   

      More details

  •   The 30th Symposium of Young Asian Biological Engineers’ Community (YABEC2025) 実行委員  

    2025.4 - 2025.11   

      More details

  •   化学工学会 第55回秋季大会 バイオ部会ポスターセッション オーガナイザー  

    2024.9   

      More details

  •   日本乳酸菌学会2023年度大会 大会副実行委員長  

    2023.7   

      More details

  •   Editorial Board, Frontiers in Chemical Engineering  

    2021.11 - Present   

      More details

    Committee type:Academic society

    researchmap

  •   日本農芸化学会2022年度大会実行委員  

    2021.11 - 2022.2   

      More details

    Committee type:Academic society

    researchmap

  •   The 26th Symposium of Young Asian Biological Engineers’ Community (YABEC2021) 実行委員  

    2021.11   

      More details

    Committee type:Academic society

    researchmap

  •   第11 回アジア乳酸菌学会 (ACLAB11)実行委員  

    2021.10 - 2022.3   

      More details

    Committee type:Academic society

    researchmap

  •   Editorial Board, Journal of Bioscience and Bioengineering  

    2021.6 - 2025.5   

      More details

    Committee type:Academic society

    researchmap

  •   Editorial Board, Frontiers in Bioengineering and Biotechnology  

    2021.4 - Present   

      More details

    Committee type:Academic society

    researchmap

  •   日本乳酸菌学会評議員  

    2020.8 - 2024.7   

      More details

    Committee type:Academic society

    researchmap

  •   日本生物工学会関西支部若手企画委員会  

    2019.6 - Present   

      More details

    Committee type:Academic society

    researchmap

  •   日本生物工学会関西支部幹事  

    2019.6 - Present   

      More details

    Committee type:Academic society

    researchmap

  •   第70回日本生物工学会大会実行委員  

    2018.9   

      More details

    Committee type:Academic society

    researchmap

  •   The 22nd Symposium of Young Asian Biological Engineers’ Community (YABEC2016) 実行委員実行委員  

    2016.10   

      More details

    Committee type:Academic society

    researchmap

  •   The 18th Symposium of Young Asian Biological Engineers’ Community (YABEC2012) 実行委員  

    2012.10   

      More details

    Committee type:Academic society

    researchmap

  •   第64回日本生物工学会大会実行委員  

    2012.10   

      More details

    Committee type:Academic society

    researchmap

▼display all

Papers

  • Milk sialyl-oligosaccharides mediate the early colonization of gut commensal microbes in piglets Reviewed

    Ryoga Hashimoto, Keita Nishiyama, Fu Namai, Kasumi Suzuki, Taiga Sakuma, Itsuko Fukuda, Yuta Sugiyama, Kenji Okano, Takafumi Shanoh, Eita Toyoshi, Ryusuke Ohgi, Sudeb Saha, Sae Tsuchida, Eri Nishiyama, Takao Mukai, Mutsumi Furukawa, Tomonori Nochi, Julio Villena, Wakako Ikeda-Ohtsubo, Gou Yoshioka, Eri Nakazaki, Yoshihito Suda, Haruki Kitazawa

    Microbiome   13 ( 1 )   135   2025.5

     More details

    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1186/s40168-025-02129-3

    researchmap

    Other Link: https://link.springer.com/article/10.1186/s40168-025-02129-3/fulltext.html

  • Identification of a critical gene involved in the biosynthesis of the polyene macrolide lavencidin in <i>Streptomyces lavendulae</i> FRI-5 using the Target-AID (activation-induced cytidine deaminase) base editing technology Reviewed

    Ryo Otsuka, Yu Sato, Kenji Okano, Eiji Okamura, Hiroya Tomita, Kohsuke Honda, Shigeru Kitani

    Applied and Environmental Microbiology   91 ( 5 )   e00975-24   2025.5

     More details

    Publishing type:Research paper (scientific journal)   Publisher:American Society for Microbiology  

    ABSTRACT

    Polyene macrolide antibiotics, produced mainly as secondary metabolites of streptomycetes, have distinct chemical structures and include clinically important antifungal drugs. We recently isolated the 28-membered polyene macrolide lavencidin from Streptomyces lavendulae FRI-5. Here, we identify and characterize the lavencidin biosynthetic ( lad ) gene cluster by combining a gene disruption system based on a base editing technology and in silico analysis. Sequence analysis of the draft genome of S. lavendulae FRI-5 revealed plausible lavencidin biosynthetic genes, which could be assigned roles in the biosynthesis of the polyketide backbone and the peripheral moiety, as well as in the regulation of lavencidin production. The introduction of a stop codon into the ladA5 polyketide synthase (PKS) gene by the base editing system resulted in a complete loss of lavencidin production, indicating that the type I modular PKS system is responsible for the biosynthesis of lavencidin.

    IMPORTANCE

    Polyene macrolide antibiotics display a unique mode of action among fungicides and exhibit potent fungicidal activity to which resistance does not readily develop. Deciphering the biosynthetic pathways of these fascinating compounds will provide chemical diversity for the development of industrially and clinically important agents. In this study, the Target-AID (activation-induced cytidine deaminase) system enabled us to identify the lad gene cluster involved in lavencidin biosynthesis, paving the way for the rational design of lavencidin derivatives with new or improved biological activity. Furthermore, this base editing system is capable of precisely and rapidly substituting the target nucleotide in several streptomycetes. Thus, our Target-AID system would be a powerful and versatile tool for the genetic engineering of streptomycetes as well as for analyzing the functions of uncharacterized genes, expanding the chemical diversity of useful bioactive compounds, and discovering novel natural products.

    DOI: 10.1128/aem.00975-24

    researchmap

  • Combination of two-stage continuous feeding and optimized synthetic medium increases lipid production in Lipomyces starkeyi Reviewed

    Chih-Chan Wu, Kenji Okano, Pijar Religia, Yuki Soma, Masatomo Takahashi, Yoshihiro Izumi, Takeshi Bamba, Kohsuke Honda

    Engineering in Life Sciences   25 ( 1 )   e70003   2025.1

     More details

  • Complete genome sequence of Paraburkholderia terrae strain KU-46, a 2,4-dinitrophenol-degrading bacterium. Reviewed International journal

    Tomoki Tanaka, Kenji Okano, Hiroaki Iwaki

    Microbiology resource announcements   13 ( 6 )   e0028224   2024.6

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    Paraburkholderia terrae strain KU-46 has been studied for its capability to degrade 2,4-dinitrophenol. Here, we present the complete 10,833,180bp genome of this microorganism, comprising five circular chromosomes housing 9,797 protein-coding sequences. The genes responsible for 2,4-dinitrophenol and 4-nitrophenol degradation are located on chromosome 2.

    DOI: 10.1128/mra.00282-24

    PubMed

    researchmap

  • Precise microbiome engineering using natural and synthetic bacteriophages targeting an artificial bacterial consortium Reviewed

    Tomoki Tanaka, Ryoga Sugiyama, Yu Sato, Manami Kawaguchi, Kohsuke Honda, Hiroaki Iwaki, Kenji Okano

    Frontiers in Microbiology   15   1403903   2024.5

     More details

    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.3389/fmicb.2024.1403903

    researchmap

  • Effects of small heat shock proteins from thermotolerant bacteria on the stress resistance of Escherichia coli to temperature, pH, and hyperosmolarity Reviewed

    Yu Sato, Kenji Okano, Kohsuke Honda

    Extremophiles   28 ( 1 )   2024.1

     More details

    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    Abstract

    Small heat shock proteins (HSPs), such as HSP20, represent cellular thermal resistance mechanisms, to avoid protein aggregation at elevated temperatures. Recombinantly expressed HSP20s serve as a molecular tool for improving the tolerance of living cells to various physical and chemical stressors. Here, we aimed to heterologously express 18 HSP20s from 12 thermotolerant bacteria in Escherichia coli and evaluate their effects on various physical and chemical cellular stresses. Seventeen HSP20s were successfully expressed as soluble proteins. Recombinant E. coli cells were subjected to heat, cold, acidic, alkaline, and hyperosmolar stress to evaluate the effects of HSP20 proteins on stress resistance. Notably, the overexpression of 15 HSP20s enhanced the stress resistance of E. coli compared to that of the control strain. In particular, HSPs from Tepidimonas sediminis and Oceanithermus profundus improved the stress tolerance of E. coli under all tested conditions. In addition, E. coli harboring HSP20 from T. sediminis retained cell viability even after heat treatment at 52 °C for 5 days. To our knowledge, this is the first report of E. coli tolerance to prolonged (&gt; 100 h) high-temperature stress. These findings indicate the potential of thermotolerant HSPs as molecular tools for improving stress tolerance in E. coli.

    DOI: 10.1007/s00792-023-01326-y

    researchmap

    Other Link: https://link.springer.com/article/10.1007/s00792-023-01326-y/fulltext.html

  • Subtractive modification of bacterial consortium using antisense peptide nucleic acids. Reviewed International journal

    Tatsuya Hizume, Yu Sato, Hiroaki Iwaki, Kohsuke Honda, Kenji Okano

    Frontiers in microbiology   14   1321428   2024.1

     More details

    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    Microbiome engineering is an emerging research field that aims to design an artificial microbiome and modulate its function. In particular, subtractive modification of the microbiome allows us to create an artificial microbiome without the microorganism of interest and to evaluate its functions and interactions with other constituent bacteria. However, few techniques that can specifically remove only a single species from a large number of microorganisms and can be applied universally to a variety of microorganisms have been developed. Antisense peptide nucleic acid (PNA) is a potent designable antimicrobial agent that can be delivered into microbial cells by conjugating with a cell-penetrating peptide (CPP). Here, we tested the efficacy of the conjugate of CPP and PNA (CPP-PNA) as microbiome modifiers. The addition of CPP-PNA specifically inhibited the growth of Escherichia coli and Pseudomonas putida in an artificial bacterial consortium comprising E. coli, P. putida, Pseudomonas fluorescens, and Lactiplantibacillus plantarum. Moreover, the growth inhibition of P. putida promoted the growth of P. fluorescens and inhibited the growth of L. plantarum. These results indicate that CPP-PNA can be used not only for precise microbiome engineering but also for analyzing the growth relationships among constituent microorganisms in the microbiome.

    DOI: 10.3389/fmicb.2023.1321428

    PubMed

    researchmap

  • Identification and characterization of a pab gene cluster responsible for the 4-aminobenzoate degradation pathway, including its involvement in the formation of a γ-glutamylated intermediate in Paraburkholderia terrae strain KU-15. Reviewed

    Yaxuan Liu, Kenji Okano, Hiroaki Iwaki

    Journal of bioscience and bioengineering   137 ( 1 )   38 - 46   2024.1

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    Paraburkholderia terrae strain KU-15 grows on 2- and 4-nitrobenzoate and 2- and 4-aminobenzoate (ABA) as the sole nitrogen and carbon sources. The genes responsible for the potential degradation of 2- and 4-nitrobenzoate and 2-ABA have been predicted from its genome sequence. In this study, we identified the pab operon in P. terrae strain KU-15. This operon is responsible for the 4-ABA degradation pathway, which involves the formation of a γ-glutamylated intermediate. Reverse transcription-polymerase chain reaction revealed that the pab operon was induced by 4-ABA. Herein, studying the deletion of pabA and pabB1 in strain KU-15 and the examining of Escherichia coli expressing the pab operon revealed the involvement of the operon in 4-ABA degradation. The first step of the degradation pathway is the formation of a γ-glutamylated intermediate, whereby 4-ABA is converted to γ-glutamyl-4-carboxyanilide (γ-GCA). Subsequently, γ-GCA is oxidized to protocatechuate. Overexpression of various genes in E. coli and purification of recombinant proteins permitted the functional characterization of relevant pathway proteins: PabA is a γ-GCA synthetase, PabB1-B3 functions in a multicomponent dioxygenase system responsible for γ-GCA dioxygenation, and PabC is a γ-GCA hydrolase that reverses the formation of γ-GCA by PabA.

    DOI: 10.1016/j.jbiosc.2023.11.002

    PubMed

    researchmap

  • Cloning of two gene clusters involved in the catabolism of 2,4-dinitrophenol by Paraburkholderia sp. strain KU-46 and characterization of the initial DnpAB enzymes and a two-component monooxygenases DnpC1C2 Reviewed

    Yaxuan Liu, Taisei Yamamoto, Nozomi Kohaya, Kota Yamamoto, Kenji Okano, Takaaki Sumiyoshi, Yoshie Hasegawa, Peter C.K. Lau, Hiroaki Iwaki

    Journal of Bioscience and Bioengineering   136 ( 3 )   223 - 231   2023.9

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.jbiosc.2023.05.013

    researchmap

  • Dietary-protein sources modulate host susceptibility to Clostridioides difficile infection through the gut microbiota. Reviewed International journal

    Kyosuke Yakabe, Seiichiro Higashi, Masahiro Akiyama, Hiroshi Mori, Takumi Murakami, Atsushi Toyoda, Yuta Sugiyama, Shigenobu Kishino, Kenji Okano, Akiyoshi Hirayama, Aina Gotoh, Shunyi Li, Takeshi Mori, Takane Katayama, Jun Ogawa, Shinji Fukuda, Koji Hase, Yun-Gi Kim

    Cell reports   40 ( 11 )   111332 - 111332   2022.9

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    Clostridioides difficile causes nosocomial antibiotic-associated diarrhea on a global scale. Susceptibility to C. difficile infection (CDI) is influenced by the composition and metabolism of gut microbiota, which in turn are affected by diet. However, the mechanism underlying the interplay between diet and gut microbiota that modulates susceptibility to CDI remains unclear. Here, we show that a soy protein diet increases the mortality of antibiotic-treated, C. difficile-infected mice while also enhancing the intestinal levels of amino acids (aas) and relative abundance of Lactobacillus genus. Indeed, Ligilactobacillus murinus-mediated fermentation of soy protein results in the generation of aas, thereby promoting C. difficile growth, and the process involves the anchored cell wall proteinase PrtP. Thus, mutual interaction between dietary protein and the gut microbiota is a critical factor affecting host susceptibility to CDI, suggesting that dietary protein sources can be an important determinant in controlling the disease.

    DOI: 10.1016/j.celrep.2022.111332

    PubMed

    researchmap

  • One‐step preparation of cell‐free ATP regeneration module based on non‐oxidative glycolysis using thermophilic enzymes Reviewed

    Gladwin Suryatin Alim, Kenji Okano, Kohsuke Honda

    ChemBioChem   23 ( 16 )   e202200210   2022.8

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Wiley  

    DOI: 10.1002/cbic.202200210

    researchmap

    Other Link: https://onlinelibrary.wiley.com/doi/full-xml/10.1002/cbic.202200210

  • Complete genome sequence of Paraburkholderia terrae strain KU-15, a 2-nitrobenzoate-degrading bacterium Reviewed

    Yaxuan Liu, Kenji Okano, Hiroaki Iwaki

    Microbiology Resource Announcements   11 ( 7 )   e00373-22   2022.7

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:American Society for Microbiology  

    Paraburkholderia terrae strain KU-15 has been investigated for its ability to degrade 2-nitrobenzoate. Here, we report the complete 10,422,345-bp genome of this microorganism, which consists of six circular replicons containing 9,483 protein-coding sequences. The genome carries genes that are potentially responsible for 2-nitrobenzoate and 4-nitirobenzoate degradation.

    DOI: 10.1128/mra.00373-22

    researchmap

  • L-Lactate oxidase-mediated removal of L-lactic acid derived from fermentation medium for the production of optically pure D-lactic acid. Reviewed International journal

    Kenji Okano, Yu Sato, Shnji Hama, Tsutomu Tanaka, Hideo Noda, Akihiko Kondo, Kohsuke Honda

    Biotechnology journal   17 ( 4 )   e2100331   2022.4

     More details

    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    BACKGROUND: There has been an increasing demand for optically pure d-lactic and l-lactic acid for the production of stereocomplex-type polylactic acid. The d-lactic acid production from lignocellulosic biomass is important owing to its great abundance in nature. Corn steep liquor (CSL) is a cheap nitrogen source used for industrial fermentation, though it contains a significant amount of l-lactic acid, which decreases the optical purity of d-lactic acid produced. METHOD AND RESULTS: To remove l-lactic acid derived from the CSL-based medium, l-lactate oxidase (LoxL) from Enterococcus sp. NBRC 3427 was expressed in an engineered Lactiplantibacillus plantarum (formally called Lactobacillus plantarum) strain KOLP7, which exclusively produces d-lactic acid from both hexose and pentose sugars. When the resulting strain was applied for d-lactic acid fermentation from the mixed sugars consisting of the major constituent sugars of lignocellulose (35 g L-1 glucose, 10 g L-1 xylose, and 5 g L-1 arabinose) using the medium containing 10 g L-1 CSL, it completely removed l-lactic acid derived from CSL (0.52 g L-1 ) and produced 41.7 g L-1 of d-lactic acid. The l-lactic acid concentration was below the detection limit, and improvement in the optical purity of d-lactic acid was observed (from 98.2% to > 99.99%) by the overexpression of LoxL. CONCLUSION AND IMPLICATIONS: The LoxL-mediated consumption of l-lactic acid would enable the production of optically pure d-lactic acid in any medium contaminated by l-lactic acid.

    DOI: 10.1002/biot.202100331

    PubMed

    researchmap

  • Improvement of production yield of L-cysteine through in vitro metabolic pathway with thermophilic enzymes. Reviewed

    Makoto Imura, Shinichi Etoh, Ryo Iwakiri, Kenji Okano, Kohsuke Honda

    Journal of bioscience and bioengineering   132 ( 6 )   585 - 591   2021.12

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    The demand for the amino acid l-cysteine is increasing in the food, cosmetic, and pharmaceutical industries. Conventionally, the commercial production of l-cysteine is achieved by its extraction from the acid hydrolysate of hair and feathers. However, this production method is associated with the release of environmentally hazardous wastewater. Additionally, l-cysteine produced from animal sources cannot be halal-certified, which limits the market size. Although recent studies have developed an alternative commercial l-cysteine production method based on microbial fermentation, the production yield was insufficient owing to the cytotoxicity of l-cysteine against the host cells. In a previous study, we had developed an in vitrol-cysteine production method with a combination of 11 thermophilic enzymes, which yielded 10.5 mM l-cysteine from 20 mM glucose. In this study, we performed re-screening for enzymes catalyzing the rate-limiting steps of the in vitro pathway. Subsequently, the genes encoding enzymes necessary for the in vitro synthesis of l-cysteine were assembled in an expression vector and co-expressed in a single strain. To prevent the synthesis of hydrogen peroxide (H2O2), which is a byproduct and inhibits the enzyme activity, the redox balance in this biosynthetic pathway was maintained by replacing the H2O2-forming NADH oxidase with another enzymatic reaction in which pyruvate was used as a sacrificial substrate. The re-designed in vitro synthetic pathway resulted in the production of 28.2 mM l-cysteine from 20 mM glucose with a molar yield of 70.5%.

    DOI: 10.1016/j.jbiosc.2021.09.003

    PubMed

    researchmap

  • Genome editing by miniature CRISPR/Cas12f1 enzyme in Escherichia coli. Reviewed

    Kenji Okano, Yu Sato, Tatsuya Hizume, Kohsuke Honda

    Journal of Bioscience and Bioengineering   2021.5

     More details

    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    The clustered regularly interspaced short palindromic repeat (CRISPR)/CRISPR-associated (Cas) system is a valuable genome editing tool for microorganisms. However, the commonly used Cas9 nuclease derived from Streptococcus pyogenes (SpCas9) is not applicable to many industrially relevant bacteria, due to its cytotoxicity and large size (1368 amino acids [aa]). We developed an alternative genome editing system using a miniature Cas12f1 nuclease (529 aa) derived from an uncultured archaeon, Un1Cas12f1. When editing four dispensable genes in Escherichia coli MG1655 and BW25113, the CRISPR/Un1Cas12f1 system showed higher efficiency (63%-100%) than the CRISPR/SpCas9 system (50%-79%). The CRISPR/Un1Cas12f1 genome editing system is expected to be applied to the genome editing of a wide variety of bacteria.

    DOI: 10.1016/j.jbiosc.2021.04.009

    PubMed

    researchmap

  • In vitro production of coenzyme A using thermophilic enzymes. Reviewed International journal

    Gladwin Suryatin Alim, Tomoka Iwatani, Kenji Okano, Shigeru Kitani, Kohsuke Honda

    Applied and Environmental Microbiology   2021.5

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    Coenzyme A (CoA) is an essential cofactor present in all domains of life and is involved in numerous metabolic pathways, including fatty acid metabolism, pyruvate oxidation through the TCA cycle, and production of secondary metabolites. This characteristic makes CoA a commercially valuable compound in the pharmaceutical, cosmetic, and clinical industries. However, CoA is difficult to accumulate in living cells at a high level as it is consumed in multiple metabolic pathways, hampering its manufacturing by typical cell cultivation and extraction approaches. The feedback inhibition by CoA to a biosynthetic enzyme, pantothenate kinase (PanK), is also a serious obstacle for high-titer production of CoA. To overcome this challenge, in vitro production of CoA, in which the CoA biosynthetic pathway was reconstructed outside of cells using recombinant thermophilic enzymes, was performed. The in vitro pathway was designed to be insensitive to the feedback inhibition of CoA using a CoA-insensitive type-III PanK from the thermophilic bacterium Thermus thermophilus Furthermore, a statistical approach using Design of Experiments was employed to rationally determine the enzyme loading ratio to maximize CoA production rate. Consequently, 0.94 mM CoA could be produced from 2 mM d-pantetheine through the designed pathway. We hypothesized that the insufficient conversion yield is attributed to the high Km value of T. thermophilus PanK towards ATP. Based on these observations, possible CoA regulation mechanisms in T. thermophilus and approaches to improve the feasibility of CoA production through the in vitro pathway have been investigated.IMPORTANCEThe biosynthesis of coenzyme A (CoA) in bacteria and eukaryotes is regulated by feedback inhibition targeting type-I and type-II pantothenate kinase (PanK). Type-III PanK is only found in bacteria and is generally insensitive to CoA. Previously, type-III PanK from the hyperthermophilic bacterium Thermotoga maritima was shown to defy this typical characteristic, and instead shows inhibition towards CoA. In the present study, phylogenetic analysis combined with functional analysis of type-III PanK from thermophiles revealed that the CoA-sensitive behavior of type-III PanK from T. maritima is uncommon. We cloned type-III PanKs from Thermus thermophilus and Geobacillus sp. 30 and showed that neither enzyme's activities were inhibited by CoA. Furthermore, we utilized type-III PanK for a one-pot cascade reaction to produce CoA.

    DOI: 10.1128/AEM.00541-21

    PubMed

    researchmap

  • Heterologous gene expression and characterization of two serine hydroxymethyltransferases from Thermoplasma acidophilum Reviewed

    Ilma Fauziah Ma’ruf, Yuka Sasaki, Anastasia Kerbs, Jochen Nießer, Yu Sato, Hironori Taniguchi, Kenji Okano, Shigeru Kitani, Elvi Restiawaty, Akhmaloka, Kohsuke Honda

    Extremophiles   25 ( 4 )   393 - 402   2021

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1007/s00792-021-01238-9

    researchmap

    Other Link: https://link.springer.com/article/10.1007/s00792-021-01238-9/fulltext.html

  • Polyhydroxybutyrate (PHB) Production Using an Arabinose-Inducible Expression System in Comparison With Cold Shock Inducible Expression System in Escherichia coli. Reviewed International journal

    Suchada Chanprateep Napathorn, Sirirat Visetkoop, Onruthai Pinyakong, Kenji Okano, Kohsuke Honda

    Frontiers in bioengineering and biotechnology   9   661096 - 661096   2021

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    Cupriavidus necator strain A-04 has shown 16S rRNA gene identity to the well-known industrial strain C. necator H16. Nevertheless, the cell characteristics and polyhydroxyalkanoate (PHA) production ability of C. necator strain A-04 were different from those of C. necator H16. This study aimed to express PHA biosynthesis genes of C. necator strain A-04 in Escherichia coli via an arabinose-inducible expression system. In this study, the PHA biosynthesis operon of C. necator strain A-04, consisting of three genes encoding acetyl-CoA acetyltransferase (phaAA-04, 1182 bp, 40.6 kDa), acetoacetyl-CoA reductase (phaBA-04, 741 bp, 26.4 kDa) and PHB synthase Class I (phaCA-04, 1770 bp), was identified. Sequence analysis of the phaAA-04, phaBA-04, and phaCA-04 genes revealed that phaCA-04 was 99% similar to phaCH16 from C. necator H16. The difference in amino acid residue situated at position 122 of phaCA-04 was proline, whereas that of C. necator H16 was leucine. The intact phaCABA-04 operon was cloned into the arabinose-inducible araBAD promoter and transformed into E. coli strains Top 10, JM109 and XL-1 blue. The results showed that optimal conditions obtained from shaken flask experiments yielded 6.1 ± 1.1 g/L cell dry mass (CDM), a PHB content of 93.3 ± 0.9% (w/w) and a productivity of 0.24 g/(L⋅h), whereas the wild-type C. necator strain A-04 accumulated 78% (w/w) PHB with a productivity of 0.09 g/(L⋅h). Finally, for the scaled-up studies, fed-batch cultivations by pH-stat control in a 5-L fermenter of E. coli strains XL1-Blue harboring pBAD/Thio-TOPO-phaCABA-04 and pColdTF-phaCABA-04 in MR or LB medium, leading to a PHB production of 31.4 ± 0.9 g/L at 54 h with a PHB content of 83.0 ± 3.8% (w/w), a CDM of 37.8 ± 1.2 g/L, a Y
    P/S
    value of 0.39 g PHB/g glucose and a productivity of 0.6 g PHB/(L⋅h) using pColdTF-phaCABA-04 in MR medium. In addition, PHB production was 29.0 ± 1.1 g/L with 60.2 ± 2.3% PHB content in the CDM of 53.1 ± 1.0 g/L, a Y
    P/S
    value of 0.21 g PHB/g glucose and a productivity of 0.4 g PHB/(L⋅h) using pBAD/Thio-TOPO-phaCABA-04 in LB medium. Thus, a relatively high PHB concentration and productivity were achieved, which demonstrated the possibility of industrial production of PHB.

    DOI: 10.3389/fbioe.2021.661096

    PubMed

    researchmap

  • Enhancement of S-Adenosylmethionine-Dependent Methylation by Integrating Methanol Metabolism with 5-Methyl-Tetrahydrofolate Formation in Escherichia coli Invited Reviewed

    Kenji Okano, Yu Sato, Shota Inoue, Shizuka Kawakami, Shigeru Kitani, Kohsuke Honda

    Catalysts   10 ( 9 )   1001 - 1001   2020.9

     More details

    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:MDPI AG  

    S-Adenosylmethionine (SAM)-dependent methyltransferases are important tools for the biocatalytic methylation of diverse biomolecules. Methylation by a whole-cell biocatalyst allows the utilization of intrinsic SAM and its regeneration system, which consists of a cyclic and multi-step enzymatic cascade. However, low intracellular availability of 5-methyl-tetrahydrofolate (5-methyl-THF), which functions as a methyl group donor, limits SAM regeneration. Here, we integrated methanol metabolism with 5-methyl-THF formation into SAM-dependent methylation system in Escherichia coli, driven by heterologously expressed methanol dehydrogenase (MDH). The coupling of MDH-catalyzed methanol oxidation with the E. coli endogenous reactions enhances the formation of 5-methyl-THF using methanol as a source of methyl group, thereby promoting both the SAM regeneration and methylation reactions. Co-expression of the mutant MDH2 from Cupriavidus necator N-1 with the O-methyltransferase 5 from Streptomyces avermitilis MA-4680 enhanced O-methylation of esculetin 1.4-fold. Additional overexpression of the E. coli endogenous 5,10-methylene-THF reductase, which catalyzes the last step of 5-methyl-THF formation, further enhanced the methylation reaction by 1.9-fold. Together with deregulation of SAM biosynthesis, the titer of methylated compounds was increased about 20-fold (from 0.023 mM to 0.44 mM). The engineered E. coli strain with enhanced 5-methyl-THF formation is now available as a chassis strain for the production of a variety of methylated compounds.

    DOI: 10.3390/catal10091001

    researchmap

  • In vitro reconstitution of non-phosphorylative Entner-Doudoroff pathway for lactate production. Reviewed

    Kenji Okano, Qianqin Zhu, Kohsuke Honda

    Journal of Bioscience and Bioengineering   129 ( 3 )   269 - 275   2020.3

     More details

    Authorship:Lead author, Corresponding author   Language:English  

    In vitro metabolic engineering is an emerging framework for bioproduction systems, in which synthetic metabolic pathways are constructed using a limited number of enzymes. Employment of thermophilic enzymes as catalytic elements in pathways enables the use of simple heat purification of recombinantly expressed enzymes. However, thermophilic enzymes are generally incompatible with thermo-labile substrates and intermediates. In previous work, we showed that lactate production through a non-ATP forming chimeric Embden-Meyerhof (EM) pathway required careful adjustment of the metabolic fluxes by continuous substrate feeding and optimization of enzyme ratios to prevent the accumulation and degradation of thermo-labile intermediates (Ye et al., Microb. Cell Fact., 11, 120, 2012). In the study reported here, we constructed an in vitro non-phosphorylative Entner-Doudoroff (np-ED) pathway. Because of the high thermal stability of the metabolic intermediates in the np-ED pathway, it could prevent degradation of accumulated metabolic intermediates caused by inconstant metabolic fluxes, and batch-mode production of lactate in which the concentrations of the substrate and metabolic intermediates change dynamically could be achieved. By combining the enzymes involved in the np-ED pathway and lactate dehydrogenase, 20.9 mM lactate was produced from 10 mM glucose and 1 mM gluconate in 6 h.

    DOI: 10.1016/j.jbiosc.2019.09.010

    PubMed

    researchmap

  • TEMPURA: Database of Growth TEMPeratures of Usual and RAre Prokaryotes. Reviewed

    Yu Sato, Kenji Okano, Hiroyuki Kimura, Kohsuke Honda

    Microbes and environments   35 ( 3 )   2020

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    Growth temperature is one of the most representative biological parameters for characterizing living organisms. Prokaryotes have been isolated from various temperature environments and show wide diversity in their growth temperatures. We herein constructed a database of growth TEMPeratures of Usual and RAre prokaryotes (TEMPURA, http://togodb.org/db/tempura), which contains the minimum, optimum, and maximum growth temperatures of 8,639 prokaryotic strains. Growth temperature information is linked with taxonomy IDs, phylogenies, and genomic information. TEMPURA provides useful information to researchers working on biotechnological applications of extremophiles and their biomolecules as well as those performing fundamental studies on the physiological diversity of prokaryotes.

    DOI: 10.1264/jsme2.ME20074

    PubMed

    researchmap

  • In vitro production of cysteine from glucose. Reviewed International journal

    Hanatani Y, Imura M, Taniguchi H, Okano K, Toya Y, Iwakiri R, Honda K

    Applied Microbiology and Biotechnology   103 ( 19 )   8009 - 8019   2019.10

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    Cysteine is a commercially valuable amino acid with an increasing demand in the food, cosmetic, and pharmaceutical industries. Although cysteine is conventionally manufactured by extraction from animal proteins, this method has several problems, such as troublesome waste-water treatment and incompatibility with some dietary restrictions. Fermentative production of cysteine from plant-derived substrates is a promising alternative for the industrial production of cysteine. However, it often suffers from low product yield as living organisms are equipped with various regulatory systems to control the intracellular cysteine concentration at a moderate level. In this study, we constructed an in vitro cysteine biosynthetic pathway by assembling 11 thermophilic enzymes. The in vitro pathway was designed to be insensitive to the feedback regulation by cysteine and to balance the intra-pathway consumption and regeneration of cofactors. A kinetic model for the in vitro pathway was built using rate equations of individual enzymes and used to optimize the loading ratio of each enzyme. Consequently, 10.5 mM cysteine could be produced from 20 mM glucose through the optimized pathway. However, the observed yield and production rate of the assay were considerably lower than those predicted by the model. Determination of cofactor concentrations in the reaction mixture indicated that the inconsistency between the model and experimental assay could be attributed to the depletion of ATP and ADP, likely due to host-derived, thermo-stable enzyme(s). Based on these observations, possible approaches to improve the feasibility of cysteine production through an in vitro pathway have been discussed.

    DOI: 10.1007/s00253-019-10061-4

    PubMed

    researchmap

  • Developing a single strain for in vitro salvage synthesis of NAD<sup>+</sup> at high temperatures and its potential for bioconversion. Reviewed

    Taniguchi H, Imura M, Okano K, Honda K

    Microbial Cell Factories   18 ( 1 )   75   2019.4

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1186/s12934-019-1125-x

    PubMed

    researchmap

  • Expression of engineered carbonyl reductase from Ogataea minuta in Rhodococcus opacus and its application to whole-cell bioconversion in anhydrous solvents. Reviewed

    Honda K, Ono T, Okano K, Miyake R, Dekishima Y, Kawabata H

    Journal of Bioscience and Bioengineering   127 ( 2 )   145 - 149   2019.2

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.jbiosc.2018.07.011

    PubMed

    researchmap

  • De novo design of biosynthetic pathways for bacterial production of bulk chemicals and biofuels. Invited Reviewed

    Okano K, Honda K, Taniguchi H, Kondo A

    FEMS Microbiology Letters   365 ( 20 )   fny215   2018.10

     More details

    Authorship:Lead author   Language:English  

    DOI: 10.1093/femsle/fny215

    PubMed

    researchmap

  • Metabolic Engineering of Lactobacillus plantarum for Direct l-Lactic Acid Production From Raw Corn Starch Reviewed

    Kenji Okano, Gentaro Uematsu, Shinji Hama, Tsutomu Tanaka, Hideo Noda, Akihiko Kondo, Kohsuke Honda

    Biotechnology Journal   13 ( 5 )   e1700517   2018.5

     More details

    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Wiley-VCH Verlag  

    DOI: 10.1002/biot.201700517

    Scopus

    PubMed

    researchmap

  • Simple technology for recycling phosphate from wastewater to farmland in rural areas Reviewed

    Hisao Ohtake, Kenji Okano, Masashi Kunisada, Hiroyuki Takano, Masaya Toda

    AMBIO   47   83 - 92   2018.1

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s13280-017-0976-9

    Web of Science

    researchmap

  • In vitro bioconversion of chitin to pyruvate with thermophilic enzymes Reviewed

    Kohsuke Honda, Keisuke Kimura, Pham Huynh Ninh, Hironori Taniguchi, Kenji Okano, Hisao Ohtake

    JOURNAL OF BIOSCIENCE AND BIOENGINEERING   124 ( 3 )   296 - 301   2017.9

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.jbiosc.2017.04.013

    Web of Science

    PubMed

    researchmap

  • A Key Enzyme of the NAD(+) Salvage Pathway in Thermus thermophilus: Characterization of Nicotinamidase and the Impact of Its Gene Deletion at High Temperatures Reviewed

    Hironori Taniguchi, Sathidaphorn Sungwallek, Phatcharin Chotchuang, Kenji Okano, Kohsuke Honda

    JOURNAL OF BACTERIOLOGY   199 ( 17 )   e00359-17   2017.9

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1128/JB.00359-17

    Web of Science

    PubMed

    researchmap

  • Modules for in vitro metabolic engineering: Pathway assembly for bio-based production of value-added chemicals Invited Reviewed

    Hironori Taniguchi, Kenji Okano, Kohsuke Honda

    Synthetic and Systems Biotechnology   2 ( 2 )   65 - 74   2017.6

     More details

    Language:English   Publisher:KeAi Communications Co.  

    DOI: 10.1016/j.synbio.2017.06.002

    Scopus

    PubMed

    researchmap

  • Improvement of operational stability of Ogataea minuta carbonyl reductase for chiral alcohol production Reviewed

    Kohsuke Honda, Mizuha Inoue, Tomohiro Ono, Kenji Okano, Yasumasa Dekishima, Hiroshi Kawabata

    JOURNAL OF BIOSCIENCE AND BIOENGINEERING   123 ( 6 )   673 - 678   2017.6

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.jbiosc.2017.01.016

    Web of Science

    PubMed

    researchmap

  • In vitro bioconversion of chitin to pyruvate with thermophilic enzymes. J. Biosci. Bioeng. Reviewed

    Honda K, Kimura K, Ninh PH, Taniguchi H, Okano K, Ohtake H

    J. Biosci. Bioeng.   2017.5

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    researchmap

  • Production of optically pure D-lactic acid from brown rice using metabolically engineered Lactobacillus plantarum Reviewed

    Kenji Okano, Shinji Hama, Maki Kihara, Hideo Noda, Tsutomu Tanaka, Akihiko Kondo

    APPLIED MICROBIOLOGY AND BIOTECHNOLOGY   101 ( 5 )   1869 - 1875   2017.3

     More details

    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s00253-016-7976-8

    Web of Science

    PubMed

    researchmap

  • A mobile pilot-scale plant for in situ demonstration of phosphorus recovery from wastewater using amorphous calcium silicate hydrates Reviewed

    Kenji Okano, Shimpei Miyamaru, Yasuhisa Yamamoto, Masashi Kunisada, Hiroyuki Takano, Masaya Toda, Kohsuke Honda, Hisao Ohtake

    SEPARATION AND PURIFICATION TECHNOLOGY   170   116 - 121   2016.10

     More details

    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.seppur.2016.06.040

    Web of Science

    researchmap

  • A simple technology for phosphorus recovery using acid-treated concrete sludge Reviewed

    Kenji Okano, Yasuhisa Yamamoto, Hiroyuki Takano, Tsuyoshi Aketo, Kohsuke Honda, Hisao Ohtake

    SEPARATION AND PURIFICATION TECHNOLOGY   165   173 - 178   2016.6

     More details

    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.seppur.2016.03.054

    Web of Science

    researchmap

  • In vitro metabolic engineering for the salvage synthesis of NAD(+) Reviewed

    Kohsuke Honda, Naoya Hara, Maria Cheng, Anna Nakamura, Komako Mandai, Kenji Okano, Hisao Ohtake

    METABOLIC ENGINEERING   35   114 - 120   2016.5

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.ymben.2016.02.005

    Web of Science

    PubMed

    researchmap

  • Redirection of the Reaction Specificity of a Thermophilic Acetolactate Synthase toward Acetaldehyde Formation Reviewed

    Maria Cheng, Hayato Yoshiyasu, Kenji Okano, Hisao Ohtake, Kohsuke Honda

    PLOS ONE   11 ( 1 )   e0146146   2016.1

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1371/journal.pone.0146146

    Web of Science

    PubMed

    researchmap

  • Development and implementation of technologies for recycling phosphorus in secondary resources in Japan Invited Reviewed

    Hisao Ohtake, Kenji Okano

    Global Environmental Research   19 ( 1 )   49 - 65   2015.5

     More details

    Language:English  

    researchmap

  • Amorphous calcium silicate hydrates and their possible mechanism for recovering phosphate from wastewater Reviewed

    Kenji Okano, Shimpei Miyamaru, Ayaka Kitao, Hiroyuki Takano, Tsuyoshi Aketo, Masaya Toda, Kohsuke Honda, Hisao Ohtake

    SEPARATION AND PURIFICATION TECHNOLOGY   144 ( 15 )   63 - 69   2015.4

     More details

    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.seppur.2015.01.043

    Web of Science

    researchmap

  • Assembly and Multiple Gene Expression of Thermophilic Enzymes in Escherichia Coli for In Vitro Metabolic Engineering Reviewed

    Pham Huynh Ninh, Kohsuke Honda, Takaaki Sakai, Kenji Okano, Hisao Ohtake

    BIOTECHNOLOGY AND BIOENGINEERING   112 ( 1 )   189 - 196   2015.1

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/bit.25338

    Web of Science

    PubMed

    researchmap

  • In vitro conversion of glycerol to lactate with thermophilic enzymes Reviewed

    Jaturapaktrarak C, Napathorn SC, Cheng M, Okano K, Ohtake H, Honda K

    Bioresources and Bioprocessing   1 ( 18 )   2014.10

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    researchmap

  • Isolation and characterization of a thermotolerant ene reductase from Geobacillus sp 30 and its heterologous expression in Rhodococcus opacus Reviewed

    Naoto Tsuji, Kohsuke Honda, Mayumi Wada, Kenji Okano, Hisao Ohtake

    APPLIED MICROBIOLOGY AND BIOTECHNOLOGY   98 ( 13 )   5925 - 5935   2014.7

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s00253-014-5668-9

    Web of Science

    PubMed

    researchmap

  • Lactic Acid Reviewed

    Kenji Okano, Tsutomu Tanaka, Akihiko Kondo

    Bioprocessing of Renewable Resources to Commodity Bioproducts   353 - 380   2014.4

     More details

    Language:English   Publishing type:Part of collection (book)   Publisher:Wiley Blackwell  

    DOI: 10.1002/9781118845394.ch13

    Scopus

    researchmap

  • Directed evolution of thermotolerant malic enzyme for improved malate production Reviewed

    Yumi Morimoto, Kohsuke Honda, Xiaoting Ye, Kenji Okano, Hisao Ohtake

    JOURNAL OF BIOSCIENCE AND BIOENGINEERING   117 ( 2 )   147 - 152   2014.2

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.jbiosc.2013.07.005

    Web of Science

    PubMed

    researchmap

  • Construction of an in vitro bypassed pyruvate decarboxylation pathway using thermostable enzyme modules and its application to N-acetylglutamate production Reviewed

    Borimas Krutsakorn, Takashi Imagawa, Kohsuke Honda, Kenji Okano, Hisao Ohtake

    MICROBIAL CELL FACTORIES   12   91   2013.10

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1186/1475-2859-12-91

    Web of Science

    PubMed

    researchmap

  • Novel technique for phosphorus recovery from aqueous solutions using amorphous calcium silicate hydrates (A-CSHs) Reviewed

    Kenji Okano, Masahide Uemoto, Jumpei Kagami, Keiichi Miura, Tsuyoshi Aketo, Masaya Toda, Kohsuke Honda, Hisao Ohtake

    WATER RESEARCH   47 ( 7 )   2251 - 2259   2013.5

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.watres.2013.01.052

    Web of Science

    PubMed

    researchmap

  • Direct conversion of glucose to malate by synthetic metabolic engineering Reviewed

    Xiaoting Ye, Kohsuke Honda, Yumi Morimoto, Kenji Okano, Hisao Ohtake

    Journal of Biotechnology   164 ( 1 )   34 - 40   2013.3

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.jbiotec.2012.11.011

    Scopus

    PubMed

    researchmap

  • Development of a continuous bioconversion system using a thermophilic whole-cell biocatalyst Reviewed

    Pham Huynh Ninh, Kohsuke Honda, Yukako Yokohigashi, Kenji Okano, Takeshi Omasa, Hisao Ohtakea

    Applied and Environmental Microbiology   79 ( 6 )   1996 - 2001   2013.3

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1128/AEM.03752-12

    Scopus

    PubMed

    researchmap

  • In vitro production of n-butanol from glucose Reviewed

    Borimas Krutsakorn, Kohsuke Honda, Xiaoting Ye, Takashi Imagawa, Xiaoyu Bei, Kenji Okano, Hisao Ohtake

    Metabolic Engineering   20   84 - 91   2013

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Academic Press Inc.  

    DOI: 10.1016/j.ymben.2013.09.006

    Scopus

    PubMed

    researchmap

  • Synthetic metabolic engineering-a novel, simple technology for designing a chimeric metabolic pathway Reviewed

    Xiaoting Ye, Kohsuke Honda, Takaaki Sakai, Kenji Okano, Takeshi Omasa, Ryuichi Hirota, Akio Kuroda, Hisao Ohtake

    MICROBIAL CELL FACTORIES   11   120   2012.9

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1186/1475-2859-11-120

    Web of Science

    PubMed

    researchmap

  • Identification of the Replication Region of a 111-kb Circular Plasmid from Rhodococcus opacus B-4 by lambda Red Recombination-Based Deletion Analysis Reviewed

    Kohsuke Honda, Makoto Imura, Kenji Okano, Takeshi Omasa, Junichi Kato, Hisao Ohtake

    BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY   76 ( 9 )   1758 - 1764   2012.9

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1271/bbb.120362

    Web of Science

    PubMed

    researchmap

  • Construction of membrane-anchoring fusion protein of Thermococcus kodakaraensis glycerol kinase and its application to repetitive batchwise reactions Reviewed

    Elvi Restiawaty, Kohsuke Honda, Kenji Okano, Ryuichi Hirota, Takeshi Omasa, Akio Kuroda, Hisao Ohtake

    JOURNAL OF BIOSCIENCE AND BIOENGINEERING   113 ( 4 )   521 - 525   2012.4

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.jbiosc.2011.11.016

    Web of Science

    PubMed

    researchmap

  • Thermal analysis for differentiating between oleaginous and non-oleaginous microorganisms Reviewed

    Bongmun Kang, Kohsuke Honda, Kenji Okano, Tsunehiro Aki, Takeshi Omasa, Hisao Ohtake

    BIOCHEMICAL ENGINEERING JOURNAL   57 ( 15 )   23 - 29   2011.11

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.bej.2011.08.002

    Web of Science

    researchmap

  • Homo-D-lactic acid production from mixed sugars using xylose-assimilating operon-integrated Lactobacillus plantarum Reviewed

    Shogo Yoshida, Kenji Okano, Tsutomu Tanaka, Chiaki Ogino, Akihiko Kondo

    APPLIED MICROBIOLOGY AND BIOTECHNOLOGY   92 ( 1 )   67 - 76   2011.10

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s00253-011-3356-6

    Web of Science

    PubMed

    researchmap

  • Improved homo l-lactic acid fermentation from xylose by abolishment of the phosphoketolase pathway and enhancement of the pentose phosphate pathway in genetically modified xylose-assimilating Lactococcus lactis Reviewed

    Satoru Shinkawa, Kenji Okano, Shogo Yoshida, Tsutomu Tanaka, Chiaki Ogino, Hideki Fukuda, Akihiko Kondo

    APPLIED MICROBIOLOGY AND BIOTECHNOLOGY   91 ( 6 )   1537 - 1544   2011.9

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s00253-011-3342-z

    Web of Science

    PubMed

    researchmap

  • Biotechnological production of enantiomeric pure lactic acid from renewable resources: recent achievements, perspectives, and limits Invited Reviewed

    Kenji Okano, Tsutomu Tanaka, Chiaki Ogino, Hideki Fukuda, Akihiko Kondo

    APPLIED MICROBIOLOGY AND BIOTECHNOLOGY   85 ( 3 )   413 - 423   2010.1

     More details

    Authorship:Lead author   Language:English  

    DOI: 10.1007/s00253-009-2280-5

    Web of Science

    PubMed

    researchmap

  • D-lactic acid production from cellooligosaccharides and beta-glucan using L-LDH gene-deficient and endoglucanase-secreting Lactobacillus plantarum Reviewed

    Kenji Okano, Qiao Zhang, Shogo Yoshida, Tsutomu Tanaka, Chiaki Ogino, Hideki Fukuda, Akihiko Kondo

    APPLIED MICROBIOLOGY AND BIOTECHNOLOGY   85 ( 3 )   643 - 650   2010.1

     More details

    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s00253-009-2111-8

    Web of Science

    PubMed

    researchmap

  • Improved Production of Homo-D-Lactic Acid via Xylose Fermentation by Introduction of Xylose Assimilation Genes and Redirection of the Phosphoketolase Pathway to the Pentose Phosphate Pathway in L-Lactate Dehydrogenase Gene-Deficient Lactobacillus plantarum Reviewed

    Kenji Okano, Shogo Yoshida, Ryosuke Yamada, Tsutomu Tanaka, Chiaki Ogino, Hideki Fukuda, Akihiko Kondo

    APPLIED AND ENVIRONMENTAL MICROBIOLOGY   75 ( 24 )   7858 - 7861   2009.12

     More details

    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1128/AEM.01692-09

    Web of Science

    PubMed

    researchmap

  • Homo-D-Lactic Acid Fermentation from Arabinose by Redirection of the Phosphoketolase Pathway to the Pentose Phosphate Pathway in L-Lactate Dehydrogenase Gene-Deficient Lactobacillus plantarum Reviewed

    Kenji Okano, Shogo Yoshida, Tsutomu Tanaka, Chiaki Ogino, Hideki Fukuda, Akihiko Kondo

    APPLIED AND ENVIRONMENTAL MICROBIOLOGY   75 ( 15 )   5175 - 5178   2009.8

     More details

    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1128/AEM.00573-09

    Web of Science

    PubMed

    researchmap

  • Efficient Production of Optically Pure D-Lactic Acid from Raw Corn Starch by Using a Genetically Modified L-Lactate Dehydrogenase Gene-Deficient and alpha-Amylase-Secreting Lactobacillus plantarum Strain Reviewed

    Kenji Okano, Qiao Zhang, Satoru Shinkawa, Shogo Yoshida, Tsutomu Tanaka, Hideki Fukuda, Akihiko Kondo

    APPLIED AND ENVIRONMENTAL MICROBIOLOGY   75 ( 2 )   462 - 467   2009.1

     More details

    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1128/AEM.01514-08

    Web of Science

    PubMed

    researchmap

  • System using tandem repeats of the cA peptidoglycan-binding domain from Lactococcus lactis for display of both N- and C-terminal fusions on cell surfaces of lactic acid bacteria Reviewed

    Kenji Okano, Qiao Zhang, Sakurako Kimura, Junya Narita, Tsutomu Tanaka, Hideki Fukuda, Akihiko Kondo

    APPLIED AND ENVIRONMENTAL MICROBIOLOGY   74 ( 4 )   1117 - 1123   2008.2

     More details

    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1128/AEM.02012-07

    Web of Science

    PubMed

    researchmap

  • Improvement in lactic acid production from starch using alpha-amylase-secreting Lactococcus lactis cells adapted to maltose or starch Reviewed

    Kenji Okano, Sakurako Kimura, Junya Narita, Hideki Fukuda, Akihiko Kondo

    APPLIED MICROBIOLOGY AND BIOTECHNOLOGY   75 ( 5 )   1007 - 1013   2007.7

     More details

    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s00253-007-0905-0

    Web of Science

    PubMed

    researchmap

  • Improvement of protein production in lactic acid bacteria using 5 '-untranslated leader sequence of slpA from Lactobacillus acidophilus Reviewed

    Junya Narita, Saori Ishida, Kenji Okano, Sakurako Kimura, Hideki Fukuda, Akihiko Kondo

    APPLIED MICROBIOLOGY AND BIOTECHNOLOGY   73 ( 2 )   366 - 373   2006.11

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s00253-006-0477-4

    Web of Science

    PubMed

    researchmap

  • Display of active enzymes on the cell surface of Escherichia coli using PgsA anchor protein and their application to bioconversion Reviewed

    J Narita, K Okano, T Tateno, T Tanino, T Sewaki, MH Sung, H Fukuda, A Kondo

    APPLIED MICROBIOLOGY AND BIOTECHNOLOGY   70 ( 5 )   564 - 572   2006.5

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s00253-005-0111-x

    Web of Science

    PubMed

    researchmap

  • Display of alpha-amylase on the surface of Lactobacillus casei cells by use of the PgsA anchor protein, and production of lactic acid from starch Reviewed

    J Narita, K Okano, T Kitao, S Ishida, T Sewaki, MH Sung, H Fukuda, A Kondo

    APPLIED AND ENVIRONMENTAL MICROBIOLOGY   72 ( 1 )   269 - 275   2006.1

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1128/AEM.72.1.269-275.2006

    Web of Science

    PubMed

    researchmap

▼display all

Books

  • 微生物を用いた有用物質生産技術の開発

    岡野憲司( Role: Joint author第2章 第8節「乳酸発酵とその留意点」)

    技術情報協会出版  2024.6 

     More details

  • 改訂増補版 実践有用微生物培養のイロハ―試験管から工業スケールまで

    片倉 啓雄, 松村 吉信, 長沼 孝文, 小野 比佐好, 本田 孝祐, 岡野 憲司, 前川 裕美, 小西 正朗, 大政 健史, 石川 陽一, 仁宮 一章, 滝口 昇, 遠藤 力也, 髙島 昌子, 黒澤 尋, 佐久間 英雄, 東端 啓貴, 村山 敬一, 伊澤 直樹, 清水(肖) 金忠, 武藤 正達, 米澤 寿美子, 木下 昌惠, 東山 堅一, 天野 研, 友安 俊文, 片倉 啓雄, 長沼 孝文, 小野 比佐好, 大政 健史( Role: Joint author3.12 嫌気性菌の培養)

    エヌ・ティー・エス  2018.8  ( ISBN:486043563X

     More details

    Total pages:376  

    ASIN

    researchmap

  • Phosphorus recovery and recycling

    Okano, K, Ohtake, H, Kunisada, H, Takano, H, Toda, M( Role: Joint authorChapter 30, Phosphorus recovery using amorphous calcium silicate hydrates)

    Springer Nature Singapore  2018.6  ( ISBN:9789811080302

     More details

    Total pages:526   Responsible for pages:435-447   Language:English  

    CiNii Books

    researchmap

  • 酵母菌・麹菌・乳酸菌の産業応用展開 (バイオテクノロジーシリーズ)

    岡野憲司, 田中勉, 本田孝祐, 近藤昭彦他( Role: Joint author第III編 第2章「乳酸菌の遺伝子操作技術の進展」)

    シーエムシー出版  2018.3  ( ISBN:4781313175

     More details

    Total pages:264   Responsible for pages:201-207  

    ASIN

    researchmap

  • リンの事典

    岡野 憲司他( Role: Joint author第3章 3-3-3「リン溶解菌」、第9章 9-2-4「非晶質ケイ酸カルシウムの利用」)

    朝倉書店  2017.11  ( ISBN:4254141041

     More details

    Total pages:368   Responsible for pages:110-111, 323  

    ASIN

    researchmap

  • Bioprocessing of Renewable Resources to Commodity Bioproducts

    Okano, K, Tanaka, T, Kondo A( Role: Joint authorChapter 13, Lactic acid)

    Willey  2014.4  ( ISBN:9781118175835

     More details

    Total pages:584   Responsible for pages:353-380  

    researchmap

  • 合成生物工学の隆起―有用物質の新たな生産法構築をめざして (バイオテクノロジーシリーズ)

    本田孝祐, 岡野憲司, 大竹久夫他, 植田 充美( Role: Joint author第9章「合成代謝工学-発酵生産のための新たなパラダイム構築への挑戦-」)

    シーエムシー出版  2012.4  ( ISBN:4781305636

     More details

    Total pages:227   Responsible for pages:141-149  

    ASIN

    researchmap

  • バイオプロセスハンドブック―バイオケミカルエンジニアリングの基礎から有用物質生

    近藤昭彦, 岡野憲司他( Role: Joint author第5編第2章「遺伝子組換え乳酸菌を用いたポリ乳酸原料の省エネ型製造技術の開発」)

    エヌ・ティー・エス  2007.3  ( ISBN:4860431065

     More details

    Total pages:776   Responsible for pages:519-524  

    ASIN

    researchmap

▼display all

MISC

  • 人工ファージを用いて標的微生物だけを減少させる菌叢改変法 Invited

    岡野憲司

    バイオサイエンスとインダストリー   82 ( 6 )   580 - 581   2024

     More details

    Authorship:Lead author  

    researchmap

  • 乳酸菌あれこれ「遺伝子改変ツール共有のすすめ」 Invited

    岡野憲司

    日本乳酸菌学会誌   33 ( 1 )   43   2022.3

     More details

  • 原核生物における多様な温度適応機構 Invited

    佐藤悠, 岡野憲司, 木村浩之, 本田孝祐

    環境バイオテクノロジー学会誌   21 ( 1 )   17 - 28   2021

     More details

  • 好熱性酵素を用いた細胞外カスケード反応の構築と有用物質生産への利用 細胞の外側でつくる人工代謝経路

    本田孝祐, 岡野憲司

    化学と生物   58 ( 7 )   389 - 395   2020.7

     More details

  • The directions and methods of genetic engineering and cultivation of lactic acid bacteria for the beginners Invited Reviewed

    30 ( 1 )   8 - 17   2019

     More details

    Authorship:Lead author   Language:Japanese  

    CiNii Books

    researchmap

  • Metabolic engineering of lactic acid bacteria for production of D-lactic acid from unutilized biomass resources

    岡野 憲司, 濵 真司, 田中 勉, 野田 秀夫, 近藤 昭彦

    JATAFFジャーナル = JATAFF journal : 農林水産技術   5 ( 3 )   33 - 37   2017.3

     More details

    Language:Japanese   Publisher:農林水産・食品産業技術振興協会  

    CiNii Books

    researchmap

  • 耐熱性酵素を用いたニコチンアミド補酵素の安定化技術の開発 (特集 注目される独創的製造技術)

    岡野 憲司, 本田 孝祐

    ケミカルエンジニヤリング = Chemical engineering   61 ( 4 )   280 - 286   2016.4

     More details

    Language:Japanese   Publisher:化学工業社  

    CiNii Books

    researchmap

  • Directed evolution of thermotolerant malic enzyme for improved malate production

    Ye Xiaothing

    生物工学会誌 : seibutsu-kogaku kaishi   94 ( 2 )   70 - 70   2016

     More details

    Language:Japanese   Publisher:日本生物工学会  

    CiNii Books

    researchmap

  • 1-Butanol production by in vitro metabolic engineering

    OKANO Kenji, HONDA Kohsuke

    バイオサイエンスとインダストリー = Bioscience & industry   73 ( 6 )   481 - 482   2015.11

     More details

    Language:Japanese  

    researchmap

  • Innovative P Recovery Process Using Amorphous Calcium Silicate Hydrates

    岡野 憲司, 國貞 眞司, 高野 博幸

    ファインケミカル : 調査・資料・報道・抄録   42 ( 12 )   24 - 29   2013.12

     More details

    Language:Japanese   Publisher:シーエムシー出版  

    CiNii Books

    researchmap

  • 「合成代謝工学」による有用化学品生産への挑戦

    本田 孝祐, 岡野 憲司, 大竹 久夫

    生物工学会誌 : seibutsu-kogaku kaishi   90 ( 10 )   629 - 630   2012.10

     More details

    Language:Japanese   Publisher:日本生物工学会  

    CiNii Books

    researchmap

  • 「合成代謝工学」による化学品生産 : 発酵工学のための新たなパラダイム構築にむけて

    本田 孝祐, 岡野 憲司, 大竹 久夫

    化学と生物   50 ( 8 )   567 - 569   2012.8

     More details

    Language:Japanese   Publisher:公益社団法人 日本農芸化学会  

    researchmap

  • 超好熱菌の稀有な解糖経路

    岡野 憲司

    生物工学会誌 : seibutsu-kogaku kaishi   90 ( 6 )   351 - 351   2012.6

     More details

    Language:Japanese   Publisher:日本生物工学会  

    CiNii Books

    researchmap

  • バイオマスからの化学品生産を目指したバイオプロセスの開発 (特集 バイオマス技術の新しい展開)

    蓮沼 誠久, 岡野 憲司, 舘野 俊博

    ケミカルエンジニヤリング   54 ( 3 )   192 - 198   2009.3

     More details

    Language:Japanese   Publisher:化学工業社  

    CiNii Books

    researchmap

  • バイオプラ最前線 バイオマスからのポリ乳酸原料製造技術の開発動向とその展望

    岡野 憲司, 近藤 昭彦

    バイオプラジャーナル   8 ( 3 )   14 - 21   2008.11

     More details

    Language:Japanese   Publisher:日本バイオプラスチック協会  

    researchmap

  • 遺伝子技術使いポリ乳酸価格の大幅低減目指す バイオマス分解酵素を高密度集積した乳酸菌で

    岡野 憲司, 近藤 昭彦

    月刊地球環境   37 ( 11 )   100 - 101   2006.9

     More details

    Language:Japanese   Publisher:日本生物工学会  

    researchmap

  • バイオマスからのポリL,D-乳酸原料の省エネ型製造技術の開発 (特集 これからの環境テクノロジー)

    岡野 憲司, 近藤 昭彦, 野田 秀夫

    月刊エコインダストリー   11 ( 7 )   43 - 48   2006.7

     More details

    Language:Japanese   Publisher:シーエムシー出版  

    CiNii Books

    researchmap

▼display all

Presentations

  • In vitro metabolic engineering for the salvage synthesis of NAD+ International conference

    Kenji Okano, Kohsuke Honda

    YABEC2017  2017.10 

     More details

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Xi’an, China  

    researchmap

  • Production of optically pure D-lactic acid from renewable resources International conference

    Kenji Okano

    The 8th China-Japan symposium on chemical engineering  2017.10 

     More details

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Beijing, China  

    researchmap

  • Production of optically pure D-lactic acid from renewable resources International conference

    Kenji Okano, Shinji Hama, Tsutomu Tanaka, Hideo Noda, Akihiko Kondo, Kohsuke Honda

    12th International Symposium on Lactic Acid Bacteria  2017.8 

     More details

    Language:English   Presentation type:Poster presentation  

    Venue:Egmond aan Zee, Netherland  

    researchmap

  • Production of optically pure D-lactic acid from renewable resources International conference

    Kenji Okano, Shinji Hama, Tsutomu Tanaka, Chiaki Noda, Hideo Noda, Akihiko Kondo

    YABEC 2016  2016.10 

     More details

    Language:English   Presentation type:Poster presentation  

    Venue:Miyazaki  

    researchmap

  • バイオマスからの乳酸生産のための乳酸菌育種 Invited

    岡野憲司, 濵真司, 田中勉, 荻野千秋, 野田秀夫, 近藤昭彦

    スマートバイオエンジニアリング研究会  2016.5 

     More details

    Language:Japanese   Presentation type:Symposium, workshop panel (nominated)  

    Venue:宮崎、シーガイアリゾート  

    researchmap

  • Assembly and multiple gene expression of thermophilic enzymes in Escherichia coli for in vitro metabolic engineering Invited International conference

    Okano K, Honda K, Ohtake H

    YABEC 2015  2015.10 

     More details

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Chuncheon, Korea  

    researchmap

  • Assembly and multiple gene expression of thermophilic enzymes in Escherichia coli for in vitro metabolic engineering Invited International conference

    Okano K, Honda K, Ohtake H

    Biotechnology and Chemistry for Green Growth  2015.3 

     More details

    Language:English   Presentation type:Oral presentation (invited, special)  

    researchmap

  • In vitro metabolic engineering employing thermophilic enzymes –a novel, simple technology for designing a chimeric metabolic pathway International conference

    Kenji Okano, Kohsuke Honda, Hisao Ohtake

    YABEC2014  2014.11 

     More details

    Language:English   Presentation type:Poster presentation  

    Venue:Chiayi, Taiwan  

    researchmap

  • Novel technology for phosphorus recycling using amorphous calcium silicate hydrates (A-CSHs) International conference

    Kenji Okano, Kohsuke Honda, Hisao Ohtake

    Ecobalance 2012  2012.11 

     More details

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Keio University, Kanagawa  

    researchmap

  • Novel technology for phosphorus recycling using amorphous calcium silicate hydrates (A-CSHs) International conference

    Kenji Okano, Kohsuke Honda, Hisao Ohtake

    YABEC 2012  2012.10 

     More details

    Language:English   Presentation type:Poster presentation  

    Venue:Tokushima University, Tokushima  

    researchmap

  • 非晶質ケイ酸カルシウム水和物を用いたリン回収技術の開発 Invited

    岡野憲司

    21世紀を拓くバイオテクノロジーシンポジウム  2012.6 

     More details

    Language:Japanese   Presentation type:Symposium, workshop panel (nominated)  

    Venue:徳島大学  

    researchmap

  • A. Novel cell surface display on lactic acid bacteria and its application to lactic acid production from starchy materials International conference

    Kenji Okano, Qiao Zhang, Tsutomu Tanaka, Hideki Fukuda, Akihiko Kondo

    2008 AIChE Annual Meeting  2008.11 

     More details

    Language:English   Presentation type:Poster presentation  

    Venue:Philadelphia, USA  

    researchmap

  • Useful compound production from biomass resources using cell surface engineered microorganisms International conference

    Kenji Okano, Tsutomu Tanaka, Chiaki Ogino, Hideki Fukuda, Akihiko Kondo

    2007.12 

     More details

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Osaka  

    researchmap

  • Efficient lactic acid production from starch by maltose- or starch-adapted α-amylase-secreting Lactococcus lactis International conference

    Kenji Okano, Sakurako Kimura, Hideki Fukuda, Akihiko Kondo

    YABEC 2006  2006.10 

     More details

    Language:English   Presentation type:Poster presentation  

    Venue:Kaohsiung, Taiwan  

    researchmap

▼display all

Industrial property rights

  • Recycling method of S-adenosylmethionine

    Kenji Okano, Kohsuke Honda

     More details

    Applicant:Osaka University

    Application no:特願2018-024361  Date applied:2018.2

    researchmap

  • Homolactic Fermentation from Pentose

    Kondo, Akihiko, Kenji Okano, Hideo Noda

     More details

    Application no:特願JP2010052216  Date applied:2010.2

    Announcement no:特開WO2010095600  Date announced:2010.8

    researchmap

Awards

  • 第26回酵素応用シンポジウム研究奨励賞

    2025.6   天野エンザイム科学技術振興財団   腸内細菌の機能解明に向けた微生物菌叢改変技術の開発

    岡野憲司

     More details

  • 第21回農芸化学研究企画賞

    2024.3   日本農芸化学会   減算的菌叢改変技術を活用した次世代プロバイオティクスシード微生物の発掘

    岡野憲司

     More details

  • 第87回酵素工学研究会講演会「ポスター賞」

    2022.4   酵素工学研究会   コドンの欠失・置換・挿入を可能にする新規分子進化方法の開発

    鶴廣太郎, 岡野憲司, 本田孝祐

     More details

  • 第73回日本生物工学会大会「トピックス賞」

    2021.10  

    Tatsuya Hizume, Kenji Okano, Yu Sato, Kohsuke Honda

     More details

  • 第29回生物工学論文賞

    2021.10   In vitro reconstitution of non-phosphorylative Entner–Doudoroff pathway for lactate production

    Kenji Okano, Qianqin Zhu, Kohsuke Honda

     More details

  • 第23回生物工学論文賞

    2015.10   日本生物工学会   Directed evolution of thermotolerant malic enzyme for improved malate production

    森本 有美, 本田 孝祐, Xiaoting Ye, 岡野 憲司, 大竹 久夫

     More details

  • Best Poster Award

    2014.11   Young Asian Biological Engineers' Community   In vitro metabolic engineering employing thermophilic enzymes –a novel, simple technology for designing a chimeric metabolic pathway

    Kenji Okano, Kohsuke Honda, Hisao Ohtake

     More details

▼display all

Research Projects

  • 「-(引き算)の科学」が切り拓く腸内細菌の機能研究

    2023.4 - 2026.3

    科学技術振興機構 

      More details

    Authorship:Principal investigator 

    researchmap

  • Plasmid-free transformation to achieve molecular breeding of all prokaryote

    Grant number:22K04840  2022.4 - 2025.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

      More details

    Grant amount:\4160000 ( Direct Cost: \3200000 、 Indirect Cost:\960000 )

    researchmap

  • Growth linkage analysis between microorganisms in microbiota using species-specific growth inihibition technique

    Grant number:22H04886  2022.4 - 2024.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

      More details

    Grant amount:\8710000 ( Direct Cost: \6700000 、 Indirect Cost:\2010000 )

    researchmap

  • Development of a codon-based mutagenesis method enabling deletion, substitution, and insertion of codons

    Grant number:19K05163  2019.4 - 2022.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    Okano Kenji

      More details

    Authorship:Principal investigator 

    Grant amount:\4290000 ( Direct Cost: \3300000 、 Indirect Cost:\990000 )

    Directed evolution of enzyme, which is based on introduction of mutation and following selection of functional mutant enzyme, is a powerful technique for improving the function of enzyme. To expand the variety of mutant, in this study, I developed a mutagenesis method allowing deletion, substitution, and insertion of codons for the target codon of the target gene.
    Specifically, inverse PCR was performed using a plasmid containing the target gene as a template, and adapter sequences were added to both termini of the target codon. The adapter sequence contains recognition sequences for three types of Type IIS restriction enzymes. By using different types of restriction enzymes and following self-ligation, deletion, substitution, and insertion of codons into target site were successfully achieved. The method was also successfully applied to all codons of the target gene to create a mutant enzyme library.

    researchmap

  • メタノールをメチル基供与体としたS-アデノシルメチオニン再生技術の開発

    Grant number:19H04656  2019.4 - 2021.3

    日本学術振興会  科学研究費助成事業 新学術領域研究(研究領域提案型)  新学術領域研究(研究領域提案型)

    岡野 憲司

      More details

    Authorship:Principal investigator 

    Grant amount:\7800000 ( Direct Cost: \6000000 、 Indirect Cost:\1800000 )

    S-アデノシルメチオニン(SAM)はあらゆる生物に普遍的に存在し、DNAやタンパク質のメチル化に寄与するメチル基供与体である。また、植物や放線菌・糸状菌の二次代謝産物の生産におけるメチル化反応にも寄与し、複雑骨格機能分子の構造・機能の多様性創出に貢献している。しかしながら、申請者の知り得る限り、SAM依存性のメチラーゼ反応を利用した物質生産の工業化事例は無く、その原因はSAM再生の困難性にあると分析している。そこで本課題では大腸菌にメタノールをメチル基供与体としたSAM再生経路の導入を行うことで、メチル化反応の効率化を図った。
    昨年度は、大腸菌BL21(DE3)株にStreptomyces avermitilis由来のO-メチルトランスフェラーゼ(OMT)とメタノールデヒドロゲナーゼ(MDH)を共発現することでSAM再生が可能なこと、metJ破壊・metF過剰発現によるSAM再生の強化が可能なことが分かった。SAMの再生にはATPが必要であるが、本年度はまずグルコースを添加することでATP再生のためのサルベージ経路を駆動しATPを代替できるかの検討を行った。その結果、2.5mM以上のグルコースの添加により、1mM ATP添加時と同様のメチル化反応が可能であった。続いてSAM再生系の有効性を示すべく、これまでのモデル反応としたエスクレチンのメチル化反応以外の反応も実施した。OMTとしてシロイヌナズナやヒト由来のものを使用し、ピノスチルベンのレスベラトロールへのメチル化やプロトカテク酸のバニリン酸へのメチル化反応を実施したが、十分な活性体を得ることができず、SAM再生系の有効性の検証には至らなかった。今後は、高機能なOMTを取得することで、SAM再生系の有効性を検証していきたい。また、MDHの強化によるSAM再生系の強化も行っていきたい。

    researchmap

  • PEP蓄積シャーシ株の創製と物質生産技術の開発

    2017.11 - 2022.3

    科学技術振興機構  未来社会創造事業 

    田中勉

      More details

    Grant type:Competitive

    Grant amount:\5206500 ( Direct Cost: \4005000 、 Indirect Cost:\1201500 )

    researchmap

  • Anaerobic Bioprocessingのためのプラットフォーム微生物の開発とバイオ燃料生産への応用

    2017.4 - 2018.3

    野田産業科学研究所  奨励研究助成 

    岡野憲司

      More details

    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\1000000 ( Direct Cost: \1000000 )

    researchmap

  • ディスポーザブル医療機器への利用に資する耐熱性ポリ乳酸樹脂製造のための、未利用米からの高光学純度D-乳酸の発酵生産技術の開発

    2017.1 - 2017.12

    大阪大学産学連携本部  Innovation Bridgeグラント 

    岡野憲司

      More details

    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\1900000 ( Direct Cost: \1900000 )

    researchmap

  • 木質系バイオマスからの芳香族ポリマー原料生産を志向した工業用乳酸菌の創生

    2016.4 - 2019.3

    日本学術振興会  科学研究費助成事業 若手研究 (B) 

    岡野憲司

      More details

    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\4160000 ( Direct Cost: \3200000 、 Indirect Cost:\960000 )

    researchmap

  • 耐熱性酵素を用いたL-システイン製造技術の開発

    2015.12 - 2019.3

    日本科学技術振興機構  研究成果最適展開支援プログラム 

    岩切亮

      More details

    Grant type:Competitive

    Grant amount:\40950000 ( Direct Cost: \31500000 、 Indirect Cost:\9450000 )

    researchmap

  • 省リン型農業実現のための土壌微生物難溶性リン酸塩資化スペクトルの体系的分析とその資化機構の解明

    2015.4 - 2017.3

    発酵研究所  一般研究助成 

    岡野憲司

      More details

    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\3000000 ( Direct Cost: \2700000 、 Indirect Cost:\300000 )

    researchmap

  • 耐熱性酵素モジュールを用いた高効率物質生産プロセスの開発

    2013.4 - 2016.3

    日本学術振興会  科学研究費助成事業 若手研究 (B) 

    岡野憲司

      More details

    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\4290000 ( Direct Cost: \3300000 、 Indirect Cost:\990000 )

    researchmap

  • 多様な未利用リン資源からリンを分離回収し産業利用するためのバイオプロセス技術の開発

    2013.4 - 2016.3

    日本学術振興会  科学研究費助成事業 基盤研究 (B) 

    大竹 久夫

      More details

    Grant type:Competitive

    Grant amount:\4290000 ( Direct Cost: \5300000 、 Indirect Cost:\990000 )

    researchmap

  • 化学触媒感覚で利用可能な生体触媒調製技術の開発

    2012.8 - 2013.3

    大阪大学フロンティア研究センター  若手教員専門力アッププロジェクト 

    岡野憲司

      More details

    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\1500000 ( Direct Cost: \1500000 )

    researchmap

  • ケミカル-低炭素生産を可能とするバイオ化学工業プロセス実現のための革新的微生物利用技術開発研究

    2011.4 - 2013.3

    日本科学技術振興機構  先端的低炭素化技術開発 

    加藤純一

      More details

    Grant type:Competitive

    Grant amount:\10270000 ( Direct Cost: \7900000 、 Indirect Cost:\2370000 )

    researchmap

  • 乳酸菌細胞表層提示システムの開発とバイオマスからのポリ乳酸原料生産への応用

    Grant number:08J00860  2008 - 2009

    日本学術振興会  科学研究費助成事業 特別研究員奨励費  特別研究員奨励費

    岡野 憲司

      More details

    Grant amount:\600000 ( Direct Cost: \600000 )

    1.研究目的
    化石資源の枯渇、地球温暖化を背景として、再生可能なバイオマス資源から生産できるプラスチックであるポリ乳酸が注目を集めている。ポリ乳酸の原料として従来のL-乳酸に加え、D-乳酸が、ポリ乳酸の高機能化のために注目されている。また、乳酸生産の原料としては、食料と競合しない木質系バイオマスの利用が期待されている。本研究では、木質系バイオマスから効率的にD-乳酸を生産する手法の開発を目的とした。
    2.研究方法
    既存のD-乳酸生産菌は遺伝子操作が困難であるため、バイオマス資化能の付与が難しい。そこで遺伝子操作が容易なD,L-乳酸生産菌であるLactobacillus plantarumのL-lactate dehydrogenase遺伝子を欠損させることで、遺伝子操作が可能なD-乳酸生産菌(ΔldhL1株)の創生を行った。次にΔldhL1株にバイオマス資可能の付与を試みた。木質バイオマスの主要成分であるセルロースを利用するため、創生したΔldhL1株にエンドグルカナーゼの発現を試みた。
    3・研究成果
    ΔldhL1株を用いてグルコースからの発酵実験を行った。その結果、本株は99.6%と非常に高い光学純度のD-乳酸を生産することが明らかとなった。また親株同様遺伝子操作が可能であることも明らかとなり、遺伝子操作が可能なD-乳酸生産株の取得に成功した。次に、本株にエンドグルカナーゼを発現させたところ、従来報告のないセロトリオース以上の鎖長を持つ、セロヘキサオースまでのセロオリゴ糖からのD-乳酸生産に成功した。更にβ-グルコシダーゼ(BGL)を添加することで、β-グルカンからのD-乳酸生産に成功した。今後はBGLを共発現させることや、乳酸菌の細胞表層に酵素を提示することで、セルロースからのより効率的なD-乳酸生産が期待できる。

    researchmap

▼display all

Teaching Experience

  • 生命工学基礎実験

    2024.9 - Present

     More details

  • M生命・生物工学ゼミナール1-4

    2023.4 - Present

     More details

  • 微生物学4

    2023.4 - Present

     More details

  • 科学技術英語2

    2022.9 - Present

     More details

  • オリエンテーションゼミナール

    2022.9 - Present

     More details

  • 微生物学3

    2022.9 - Present

     More details

  • 生物学実験

    2022.8 - Present

     More details

  • 化学実験

    2022.4 - Present

     More details

  • 生物工学実験

    2022.4 - Present

     More details

  • M分子微生物学特論

    2022.4 - Present

     More details

▼display all