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Chen W, Sun L, Wu X, Xu Z, Chen CY, Liu S, Chen H, Sun B, Dong M. Heterologous Expression of Ketoreductase ChKRED20 Mutant in Pichia pastoris and Bioreductive Production of ( R)-1, 3-Butanediol. Molecules 2024; 29:4393. [PMID: 39339388 PMCID: PMC11433769 DOI: 10.3390/molecules29184393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2024] [Revised: 09/13/2024] [Accepted: 09/13/2024] [Indexed: 09/30/2024] Open
Abstract
(R)-1, 3-Butanediol (1, 3-BDO) is an important intermediate in the synthesis of aromatics, pheromones, insecticides, and beta-lactam antibiotics. The ChKRED20 is a robust NADH-dependent ketoreductase identified from Chryseobacterium sp. CA49. We obtained a ChKRED20 mutant (M12) through directed evolutionary screening of ChKRED20, the mutant with significantly improved activity to asymmetrically reduce 4-hydroxy-2-butanone (4H2B) to (R)-1, 3-BDO. So far, both ChKRED20 and its mutants have been expressed in intracellular in E. coli, the process of purification after intracellular expression is complicated, which leads to high cost. Here, we expressed M12 by constructing multicopy expression strains in P. pastoris, and the target protein yield was 302 mg/L in shake-flask fermentation and approximately 3.5 g/L in high-density fermentation. The recombinant M12 showed optimal enzyme activity at 30 °C and had high activity within a broad pH range of 6.0-8.0, and also showed high thermal stability. The recombinant M12 was further used for the reduction of 4H2B to (R)-1, 3-BDO, and 98.9% yield was achieved at 4540 mM 4H2B. The crude M12 enzyme extract was found to catalyze the bioreductive production of (R)-1, 3-BDO with excellent stereoselectivity (ee > 99%) and meet the production requirements. Our research shows that the M12 mutant can be used for the synthesis of (R)-1, 3-BDO, and the P. pastoris expression system is an ideal platform for the large-scale, low-cost preparation of ChKRED20 or its mutants, which may have applications in industrial settings.
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Affiliation(s)
- Wanping Chen
- School of Pharmacy, Qingdao University, Qingdao 266021, China
- Enzymaster (Ningbo) Bio-Engineering Co., Ltd., Ningbo 315100, China
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Lei Sun
- Enzymaster (Ningbo) Bio-Engineering Co., Ltd., Ningbo 315100, China
| | - Xinwei Wu
- Enzymaster (Ningbo) Bio-Engineering Co., Ltd., Ningbo 315100, China
| | - Zhenni Xu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Chin-Yu Chen
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Sitong Liu
- Enzymaster (Ningbo) Bio-Engineering Co., Ltd., Ningbo 315100, China
| | - Haibin Chen
- Enzymaster (Ningbo) Bio-Engineering Co., Ltd., Ningbo 315100, China
| | - Baoguo Sun
- Enzymaster (Ningbo) Bio-Engineering Co., Ltd., Ningbo 315100, China
| | - Mingxin Dong
- School of Pharmacy, Qingdao University, Qingdao 266021, China
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2
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Tian J, Boggs DG, Donnan PH, Barroso GT, Garcia AA, Dowling DP, Buss JA, Bridwell-Rabb J. The NADH recycling enzymes TsaC and TsaD regenerate reducing equivalents for Rieske oxygenase chemistry. J Biol Chem 2023; 299:105222. [PMID: 37673337 PMCID: PMC10579966 DOI: 10.1016/j.jbc.2023.105222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 08/22/2023] [Accepted: 08/31/2023] [Indexed: 09/08/2023] Open
Abstract
Many microorganisms use both biological and nonbiological molecules as sources of carbon and energy. This resourcefulness means that some microorganisms have mechanisms to assimilate pollutants found in the environment. One such organism is Comamonas testosteroni, which metabolizes 4-methylbenzenesulfonate and 4-methylbenzoate using the TsaMBCD pathway. TsaM is a Rieske oxygenase, which in concert with the reductase TsaB consumes a molar equivalent of NADH. Following this step, the annotated short-chain dehydrogenase/reductase and aldehyde dehydrogenase enzymes TsaC and TsaD each regenerate a molar equivalent of NADH. This co-occurrence ameliorates the need for stoichiometric addition of reducing equivalents and thus represents an attractive strategy for integration of Rieske oxygenase chemistry into biocatalytic applications. Therefore, in this work, to overcome the lack of information regarding NADH recycling enzymes that function in partnership with Rieske non-heme iron oxygenases (Rieske oxygenases), we solved the X-ray crystal structure of TsaC to a resolution of 2.18 Å. Using this structure, a series of substrate analog and protein variant combination reactions, and differential scanning fluorimetry experiments, we identified active site features involved in binding NAD+ and controlling substrate specificity. Further in vitro enzyme cascade experiments demonstrated the efficient TsaC- and TsaD-mediated regeneration of NADH to support Rieske oxygenase chemistry. Finally, through in-depth bioinformatic analyses, we illustrate the widespread co-occurrence of Rieske oxygenases with TsaC-like enzymes. This work thus demonstrates the utility of these NADH recycling enzymes and identifies a library of short-chain dehydrogenase/reductase enzyme prospects that can be used in Rieske oxygenase pathways for in situ regeneration of NADH.
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Affiliation(s)
- Jiayi Tian
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan, USA
| | - David G Boggs
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan, USA
| | - Patrick H Donnan
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan, USA
| | - Gage T Barroso
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan, USA
| | | | - Daniel P Dowling
- Department of Chemistry, University of Massachusetts Boston, Boston, Massachusetts, USA
| | - Joshua A Buss
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan, USA
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Sehl T, Seibt L, Kappauf K, Ergezinger P, Spöring JD, Mielke K, Doeker M, Verma N, Bocola M, Daußmann T, Chen H, Shi S, Jupke A, Rother D. Enzymatic (2
R
,4
R
)‐Pentanediol Synthesis – “Putting a Bottle on the Table”. CHEM-ING-TECH 2023. [DOI: 10.1002/cite.202200178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Torsten Sehl
- Forschungszentrum Jülich GmbH Institute of Bio- and Geosciences, IBG-1: Biotechnology Leo-Brandt-Straße 1 52425 Jülich Germany
| | - Lisa Seibt
- Forschungszentrum Jülich GmbH Institute of Bio- and Geosciences, IBG-1: Biotechnology Leo-Brandt-Straße 1 52425 Jülich Germany
| | - Katrin Kappauf
- Forschungszentrum Jülich GmbH Institute of Bio- and Geosciences, IBG-1: Biotechnology Leo-Brandt-Straße 1 52425 Jülich Germany
| | - Pia Ergezinger
- Forschungszentrum Jülich GmbH Institute of Bio- and Geosciences, IBG-1: Biotechnology Leo-Brandt-Straße 1 52425 Jülich Germany
| | - Jan-Dirk Spöring
- Forschungszentrum Jülich GmbH Institute of Bio- and Geosciences, IBG-1: Biotechnology Leo-Brandt-Straße 1 52425 Jülich Germany
| | - Kristina Mielke
- RWTH Aachen University AVT.FVT – Fluid Process Engineering Forckenbeckstraße 51 52074 Aachen Germany
| | - Moritz Doeker
- RWTH Aachen University AVT.FVT – Fluid Process Engineering Forckenbeckstraße 51 52074 Aachen Germany
| | - Neha Verma
- Enzymaster Deutschland GmbH Neusser Straße 39 40219 Düsseldorf Germany
| | - Marco Bocola
- Enzymaster Deutschland GmbH Neusser Straße 39 40219 Düsseldorf Germany
| | - Thomas Daußmann
- Enzymaster Deutschland GmbH Neusser Straße 39 40219 Düsseldorf Germany
| | - Haibin Chen
- Enzymaster (Ningbo) Bioengineering Co Ltd. 333 North Century Avenue 315042 Ningbo China
| | - Shumin Shi
- Enzymaster (Ningbo) Bioengineering Co Ltd. 333 North Century Avenue 315042 Ningbo China
| | - Andreas Jupke
- RWTH Aachen University AVT.FVT – Fluid Process Engineering Forckenbeckstraße 51 52074 Aachen Germany
| | - Dörte Rother
- Forschungszentrum Jülich GmbH Institute of Bio- and Geosciences, IBG-1: Biotechnology Leo-Brandt-Straße 1 52425 Jülich Germany
- RWTH Aachen University Aachen Biology and Biotechnology (ABBt) Worringer Weg 1 52074 Aachen Germany
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4
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Lu WF, Yu Y, Lin RD, Yao Y, Liu Y, Wu ZL, Liu YH, Wang N. Enantioselective biosynthesis of (R)-γ-hydroxy sulfides via a one-pot approach with ChKRED20. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Thermostabilizing ketoreductase ChKRED20 by consensus mutagenesis at dimeric interfaces. Enzyme Microb Technol 2022; 158:110052. [DOI: 10.1016/j.enzmictec.2022.110052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 03/15/2022] [Accepted: 04/17/2022] [Indexed: 11/19/2022]
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6
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Li J, Dinh T, Phillips R. The crystal structure of the S154Y mutant carbonyl reductase from Leifsonia xyli explains enhanced activity for 3,5-Bis(trifluoromethyl)acetophenone reduction. Arch Biochem Biophys 2022; 720:109158. [PMID: 35247363 DOI: 10.1016/j.abb.2022.109158] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 02/20/2022] [Accepted: 02/22/2022] [Indexed: 11/24/2022]
Abstract
Carbonyl reductase from Leifsonia xyli (LXCAR, UniProtKB - T2FLN4) can stereoselectively catalyze the reduction of 3,5-bis(trifluoromethyl)acetophenone (BTAP) to its corresponding alcohol, (R)-[3,5-bis(trifluoromethyl)phenyl]ethanol ((R)-BTPE), which is a valuable chiral intermediate for the synthesis of antiemetic drugs, Aprepitant and Fosaprepitant. Moreover, this protein was found to have a broad spectrum of substrate specificity and can asymmetrically catalyze the reduction of a variety of ketones and keto esters. Even though molecular modelling of this protein was done by Wang et al. (2014), a crystal structure has not yet obtained. In this study, a single mutant, S154Y, which was shown to have higher catalytic activity toward BTAP than that of the wild type, was overexpressed in Escherichia coli BL21 (DE3), purified, and crystallized. The crystal structure of LXCAR-S154Y explains how the mutant enzyme can work with BTAP more efficiently than wild type carbonyl reductase. Furthermore, the structure explains why LXCAR-S154Y can use either NADH or NADPH efficiently as a cofactor, as well as elucidates a proton relay system present in the enzyme.
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Affiliation(s)
- Jun Li
- School of Pharmacy, Hangzhou Medical College, Hangzhou, Zhejiang, 310053, PR China.
| | - Tung Dinh
- Department of Chemistry, University of Georgia, Athens, GA, 30602, USA.
| | - Robert Phillips
- Department of Chemistry and of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, 30602, USA.
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Huang JJ, Wei T, Ye ZW, Zheng QW, Jiang BH, Han WF, Ye AQ, Han PY, Guo LQ, Lin JF. Microbial Cell Factory of Baccatin III Preparation in Escherichia coli by Increasing DBAT Thermostability and in vivo Acetyl-CoA Supply. Front Microbiol 2022; 12:803490. [PMID: 35095813 PMCID: PMC8790024 DOI: 10.3389/fmicb.2021.803490] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 12/09/2021] [Indexed: 12/04/2022] Open
Abstract
Given the rapid development of genome mining in this decade, the substrate channel of paclitaxel might be identified in the near future. A robust microbial cell factory with gene dbat, encoding a key rate-limiting enzyme 10-deacetylbaccatin III-10-O-transferase (DBAT) in paclitaxel biosynthesis to synthesize the precursor baccatin III, will lay out a promising foundation for paclitaxel de novo synthesis. Here, we integrated gene dbat into the wild-type Escherichia coli BW25113 to construct strain BWD01. Yet, it was relatively unstable in baccatin III synthesis. Mutant gene dbat S189V with improved thermostability was screened out from a semi-rational mutation library of DBAT. When it was over-expressed in an engineered strain N05 with improved acetyl-CoA generation, combined with carbon source optimization of fermentation engineering, the production level of baccatin III was significantly increased. Using this combination, integrated strain N05S01 with mutant dbat S189V achieved a 10.50-fold increase in baccatin III production compared with original strain BWD01. Our findings suggest that the combination of protein engineering and metabolic engineering will become a promising strategy for paclitaxel production.
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Affiliation(s)
- Jia-jun Huang
- Department of Bioengineering, College of Food Science, Institute of Food Biotechnology, South China Agricultural University, Guangzhou, China
- Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
| | - Tao Wei
- Department of Bioengineering, College of Food Science, Institute of Food Biotechnology, South China Agricultural University, Guangzhou, China
- Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
| | - Zhi-wei Ye
- Department of Bioengineering, College of Food Science, Institute of Food Biotechnology, South China Agricultural University, Guangzhou, China
- Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
| | - Qian-wang Zheng
- Department of Bioengineering, College of Food Science, Institute of Food Biotechnology, South China Agricultural University, Guangzhou, China
- Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
| | - Bing-hua Jiang
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA, United States
| | - Wen-feng Han
- Department of Bioengineering, College of Food Science, Institute of Food Biotechnology, South China Agricultural University, Guangzhou, China
- Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
| | - An-qi Ye
- Department of Bioengineering, College of Food Science, Institute of Food Biotechnology, South China Agricultural University, Guangzhou, China
- Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
| | - Pei-yun Han
- Department of Bioengineering, College of Food Science, Institute of Food Biotechnology, South China Agricultural University, Guangzhou, China
- Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
| | - Li-qiong Guo
- Department of Bioengineering, College of Food Science, Institute of Food Biotechnology, South China Agricultural University, Guangzhou, China
- Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
| | - Jun-fang Lin
- Department of Bioengineering, College of Food Science, Institute of Food Biotechnology, South China Agricultural University, Guangzhou, China
- Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
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8
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Xing X, Liu Y, Shi ML, Li K, Fan XY, Wu ZL, Wang N, Yu XQ. Preparation of chiral aryl alcohols: a controllable enzymatic strategy via light-driven NAD(P)H regeneration. NEW J CHEM 2022. [DOI: 10.1039/d1nj06000g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Controllable and mild photoenzymatic production of chiral alcohols was realized by coupling a photochemical NAD(P)H regeneration system with (R)- or (S)-selective ketoreductases.
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Affiliation(s)
- Xiu Xing
- Key Laboratory of Green Chemistry Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Yan Liu
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, P. R. China
| | - Ming-Liang Shi
- Key Laboratory of Green Chemistry Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Kun Li
- Key Laboratory of Green Chemistry Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Xin-Yue Fan
- Key Laboratory of Green Chemistry Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Zhong-Liu Wu
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, P. R. China
| | - Na Wang
- Key Laboratory of Green Chemistry Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
| | - Xiao-Qi Yu
- Key Laboratory of Green Chemistry Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
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9
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Davidson J, Nicholas K, Young J, Conrady DG, Mayclin S, Subramanian S, Staker BL, Myler PJ, Asojo OA. Crystal structure of a putative short-chain dehydrogenase/reductase from Paraburkholderia xenovorans. Acta Crystallogr F Struct Biol Commun 2022; 78:25-30. [PMID: 34981772 PMCID: PMC8725002 DOI: 10.1107/s2053230x21012632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 11/28/2021] [Indexed: 11/22/2022] Open
Abstract
Paraburkholderia xenovorans degrades organic wastes, including polychlorinated biphenyls. The atomic structure of a putative dehydrogenase/reductase (SDR) from P. xenovorans (PxSDR) was determined in space group P21 at a resolution of 1.45 Å. PxSDR shares less than 37% sequence identity with any known structure and assembles as a prototypical SDR tetramer. As expected, there is some conformational flexibility and difference in the substrate-binding cavity, which explains the substrate specificity. Uniquely, the cofactor-binding cavity of PxSDR is not well conserved and differs from those of other SDRs. PxSDR has an additional seven amino acids that form an additional unique loop within the cofactor-binding cavity. Further studies are required to determine how these differences affect the enzymatic functions of the SDR.
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Affiliation(s)
- Jaysón Davidson
- Department of Chemistry and Biochemistry, Hampton University, 200 William R. Harvey Way, Hampton, VA 23668, USA
| | - Kyndall Nicholas
- Department of Chemistry and Biochemistry, Hampton University, 200 William R. Harvey Way, Hampton, VA 23668, USA
| | - Jeremy Young
- Department of Chemistry and Biochemistry, Hampton University, 200 William R. Harvey Way, Hampton, VA 23668, USA
| | - Deborah G. Conrady
- UCB Pharma, Bedford, Massachusetts, USA
- Seattle Structural Genomics Center for Infectious Disease (SSGCID), Seattle, Washington, USA
| | - Stephen Mayclin
- UCB Pharma, Bedford, Massachusetts, USA
- Seattle Structural Genomics Center for Infectious Disease (SSGCID), Seattle, Washington, USA
| | - Sandhya Subramanian
- Seattle Structural Genomics Center for Infectious Disease (SSGCID), Seattle, Washington, USA
- Center for Global Infectious Disease Research, Seattle Children’s Research Institute, 307 Westlake Avenue North Suite 500, Seattle, WA 98109, USA
| | - Bart L. Staker
- Seattle Structural Genomics Center for Infectious Disease (SSGCID), Seattle, Washington, USA
- Center for Global Infectious Disease Research, Seattle Children’s Research Institute, 307 Westlake Avenue North Suite 500, Seattle, WA 98109, USA
| | - Peter J. Myler
- Seattle Structural Genomics Center for Infectious Disease (SSGCID), Seattle, Washington, USA
- Center for Global Infectious Disease Research, Seattle Children’s Research Institute, 307 Westlake Avenue North Suite 500, Seattle, WA 98109, USA
| | - Oluwatoyin A. Asojo
- Department of Chemistry and Biochemistry, Hampton University, 200 William R. Harvey Way, Hampton, VA 23668, USA
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10
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Butyryl/Caproyl-CoA:Acetate CoA-transferase: cloning, expression and characterization of the key enzyme involved in medium-chain fatty acid biosynthesis. Biosci Rep 2021; 41:229427. [PMID: 34338280 PMCID: PMC8360832 DOI: 10.1042/bsr20211135] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 07/07/2021] [Accepted: 07/30/2021] [Indexed: 12/12/2022] Open
Abstract
Coenzyme A transferases (CoATs) are important enzymes involved in carbon chain elongation, contributing to medium-chain fatty acid (MCFA) biosynthesis. For example, butyryl-CoA:acetate CoA transferase (BCoAT) is responsible for the final step of butyrate synthesis from butyryl-CoA. However, little is known about caproyl-CoA:acetate CoA-transferase (CCoAT), which is responsible for the final step of caproate synthesis from caproyl-CoA. In the present study, two CoAT genes from Ruminococcaceae bacterium CPB6 and Clostridium tyrobutyricum BEY8 were identified by gene cloning and expression analysis. Enzyme assays and kinetic studies were carried out using butyryl-CoA or caproyl-CoA as the substrate. CPB6-CoAT can catalyze the conversion of both butyryl-CoA into butyrate and caproyl-CoA into caproate, but its catalytic efficiency with caproyl-CoA as the substrate was 3.8-times higher than that with butyryl-CoA. In contrast, BEY8-CoAT had only BCoAT activity, not CCoAT activity. This demonstrated the existence of a specific CCoAT involved in chain elongation via the reverse β-oxidation pathway. Comparative bioinformatics analysis showed the presence of a highly conserved motif (GGQXDFXXGAXX) in CoATs, which is predicted to be the active center. Single point mutations in the conserved motif of CPB6-CoAT (Asp346 and Ala351) led to marked decreases in the activity for butyryl-CoA and caproyl-CoA, indicating that the conserved motif is the active center of CPB6-CoAT and that Asp346 and Ala351 have a significant impact on the enzymatic activity. This work provides insight into the function of CCoAT in caproic acid biosynthesis and improves understanding of the chain elongation pathway for MCFA production.
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Zhan J, Shou C, Zheng Y, Chen Q, Pan J, Li C, Xu J. Discovery and Engineering of Bacterial (−)‐Isopiperitenol Dehydrogenases to Enhance (−)‐Menthol Precursor Biosynthesis. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100368] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jing‐Ru Zhan
- Laboratory of Biocatalysis and Synthetic Biotechnology State Key Laboratory of Bioreactor Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 People's Republic of China
| | - Chao Shou
- Laboratory of Biocatalysis and Synthetic Biotechnology State Key Laboratory of Bioreactor Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 People's Republic of China
| | - Yu‐Cong Zheng
- Laboratory of Biocatalysis and Synthetic Biotechnology State Key Laboratory of Bioreactor Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 People's Republic of China
| | - Qi Chen
- Laboratory of Biocatalysis and Synthetic Biotechnology State Key Laboratory of Bioreactor Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 People's Republic of China
- Shanghai Collaborative Innovation Center for Biomanufacturing School of Biotechnology East China University of Science and Technology 130 Meilong Road Shanghai 200237 People's Republic of China
| | - Jiang Pan
- Laboratory of Biocatalysis and Synthetic Biotechnology State Key Laboratory of Bioreactor Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 People's Republic of China
- Shanghai Collaborative Innovation Center for Biomanufacturing School of Biotechnology East China University of Science and Technology 130 Meilong Road Shanghai 200237 People's Republic of China
| | - Chun‐Xiu Li
- Laboratory of Biocatalysis and Synthetic Biotechnology State Key Laboratory of Bioreactor Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 People's Republic of China
- Shanghai Collaborative Innovation Center for Biomanufacturing School of Biotechnology East China University of Science and Technology 130 Meilong Road Shanghai 200237 People's Republic of China
| | - Jian‐He Xu
- Laboratory of Biocatalysis and Synthetic Biotechnology State Key Laboratory of Bioreactor Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 People's Republic of China
- Shanghai Collaborative Innovation Center for Biomanufacturing School of Biotechnology East China University of Science and Technology 130 Meilong Road Shanghai 200237 People's Republic of China
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