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Wang P, Pei X, Zhou W, Zhao Y, Gu P, Li Y, Gao J. Research and application progress of microbial β-mannanases: a mini-review. World J Microbiol Biotechnol 2024; 40:169. [PMID: 38630389 DOI: 10.1007/s11274-024-03985-1] [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: 03/05/2024] [Accepted: 04/08/2024] [Indexed: 04/19/2024]
Abstract
Mannan is a predominant constituent of cork hemicellulose and is widely distributed in various plant tissues. β-Mannanase is the principal mannan-degrading enzyme, which breaks down the β-1,4-linked mannosidic bonds in mannans in an endo-acting manner. Microorganisms are a valuable source of β-mannanase, which exhibits catalytic activity in a wide range of pH and temperature, making it highly versatile and applicable in pharmaceuticals, feed, paper pulping, biorefinery, and other industries. Here, the origin, classification, enzymatic properties, molecular modification, immobilization, and practical applications of microbial β-mannanases are reviewed, the future research directions for microbial β-mannanases are also outlined.
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Affiliation(s)
- Ping Wang
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, PR China
| | - Xiaohui Pei
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Shandong First Medical University, Taian, 271000, PR China
| | - Weiqiang Zhou
- Weili Biotechnology (Shandong) Co., Ltd, Taian, 271400, PR China
| | - Yue Zhao
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, PR China
| | - Pengfei Gu
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, PR China
| | - Yumei Li
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, PR China.
| | - Juan Gao
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, PR China.
- Shandong Engineering Research Center of Key Technologies for High-Value and High-Efficiency Full Industry Chain of Lonicera japonica, Linyi, 273399, PR China.
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2
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Fang K, Xu Z, Yang L, Cui Q, Du B, Liu H, Wang R, Li P, Su J, Wang J. Biosynthesis of 10-Hydroxy-2-decenoic Acid through a One-Step Whole-Cell Catalysis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:1190-1202. [PMID: 38175798 DOI: 10.1021/acs.jafc.3c08142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
10-Hydroxy-2-decenoic acid (10-HDA) is an important component of royal jelly, known for its antimicrobial, anti-inflammatory, blood pressure-lowering, and antiradiation effects. Currently, 10-HDA biosynthesis is limited by the substrate selectivity of acyl-coenzyme A dehydrogenase, which restricts the technique to a two-step process. This study aimed to develop an efficient and simplified method for synthesizing 10-HDA. In this study, ACOX from Candida tropicalis 1798, which catalyzes 10-hydroxydecanoyl coenzyme A desaturation for 10-HDA synthesis, was isolated and heterologously coexpressed with FadE, Macs, YdiI, and CYP in Escherichia coli/SK after knocking out FadB, FadJ, and FadR genes. The engineered E. coli/AKS strain achieved a 49.8% conversion of decanoic acid to 10-HDA. CYP expression was improved through ultraviolet mutagenesis and high-throughput screening, increased substrate conversion to 75.6%, and the synthesis of 10-HDA was increased to 0.628 g/L in 10 h. This is the highest conversion rate and product concentration achieved in the shortest time to date. This study provides a simple and efficient method for 10-HDA biosynthesis and offers an effective method for developing strains with high product yields.
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Affiliation(s)
- Ke Fang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) (Qilu University of Technology), Jinan 250353, Shandong, Republic of China
- School of Bioengineering, Qilu University of Technology, Jinan 250353, Shandong, Republic of China
| | - Ziting Xu
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) (Qilu University of Technology), Jinan 250353, Shandong, Republic of China
- School of Bioengineering, Qilu University of Technology, Jinan 250353, Shandong, Republic of China
| | - Lu Yang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) (Qilu University of Technology), Jinan 250353, Shandong, Republic of China
- School of Bioengineering, Qilu University of Technology, Jinan 250353, Shandong, Republic of China
| | - Quan Cui
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) (Qilu University of Technology), Jinan 250353, Shandong, Republic of China
- School of Bioengineering, Qilu University of Technology, Jinan 250353, Shandong, Republic of China
| | - Bowen Du
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) (Qilu University of Technology), Jinan 250353, Shandong, Republic of China
- School of Bioengineering, Qilu University of Technology, Jinan 250353, Shandong, Republic of China
| | - Huijing Liu
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) (Qilu University of Technology), Jinan 250353, Shandong, Republic of China
- School of Bioengineering, Qilu University of Technology, Jinan 250353, Shandong, Republic of China
| | - Ruiming Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) (Qilu University of Technology), Jinan 250353, Shandong, Republic of China
- School of Bioengineering, Qilu University of Technology, Jinan 250353, Shandong, Republic of China
| | - Piwu Li
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) (Qilu University of Technology), Jinan 250353, Shandong, Republic of China
- School of Bioengineering, Qilu University of Technology, Jinan 250353, Shandong, Republic of China
| | - Jing Su
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) (Qilu University of Technology), Jinan 250353, Shandong, Republic of China
- School of Bioengineering, Qilu University of Technology, Jinan 250353, Shandong, Republic of China
| | - Junqing Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) (Qilu University of Technology), Jinan 250353, Shandong, Republic of China
- School of Bioengineering, Qilu University of Technology, Jinan 250353, Shandong, Republic of China
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Olaniyi OO, Ajulo AS, Lawal OT, Olatunji VK. Engineered Alcaligenes sp. by chemical mutagen produces thermostable and acido-alkalophilic endo-1,4-β-mannanases for improved industrial biocatalyst. Prep Biochem Biotechnol 2023; 53:1120-1136. [PMID: 36752611 DOI: 10.1080/10826068.2023.2172038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
This study reported physicochemical properties of purified endo-1,4-β-mannanase from the wild type, Alcaligenes sp. and its most promising chemical mutant. The crude enzymes from fermentation of wild and mutant bacteria were purified by ammonium sulfate precipitation, ion exchange and gel-filtration chromatography followed by an investigation of the physicochemical properties of purified wild and mutant enzymes. β-mannanase from wild and mutant Alcaligenes sp. exhibited 1.75 and 1.6 purification-folds with percentage recoveries of 2.6 and 2.5% and molecular weights of 61.6 and 80 kDa respectively. The wild and mutant β-mannanase were most active at 40 and 50 °C with optimum pH 6.0 for both and were thermostable with very high percentage activity but the wild-type β-mannanase showed better stability over a broad pH activity. The β-mannanase activity from the parent strain was stimulated in the presence of Mn2+, Co2+, Zn2+, Mg2+ and Na+. Vmax and Km for the wild type and its mutant were found to be 0.747 U//mL/min and 5.2 × 10-4 mg/mL, and 0.247 U/mL/min and 2.47 × 10-4 mg/mL, respectively. Changes that occurred in the nucleotide sequences of the most improved mutant may be attributed to its thermo-stability, thermo-tolerant and high substrate affinity- desired properties for improved bioprocesses.
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Affiliation(s)
| | | | - Olusola Tosin Lawal
- Department of Biochemistry, Federal University of Technology, Akure, Nigeria
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Nezhad NG, Rahman RNZRA, Normi YM, Oslan SN, Shariff FM, Leow TC. Recent advances in simultaneous thermostability-activity improvement of industrial enzymes through structure modification. Int J Biol Macromol 2023; 232:123440. [PMID: 36708895 DOI: 10.1016/j.ijbiomac.2023.123440] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/17/2023] [Accepted: 01/23/2023] [Indexed: 01/27/2023]
Abstract
Engineered thermostable microbial enzymes are widely employed to catalyze chemical reactions in numerous industrial sectors. Although high thermostability is a prerequisite of industrial applications, enzyme activity is usually sacrificed during thermostability improvement. Therefore, it is vital to select the common and compatible strategies between thermostability and activity improvement to reduce mutants̕ libraries and screening time. Three functional protein engineering approaches, including directed evolution, rational design, and semi-rational design, are employed to manipulate protein structure on a genetic basis. From a structural standpoint, integrative strategies such as increasing substrate affinity; introducing electrostatic interaction; removing steric hindrance; increasing flexibility of the active site; N- and C-terminal engineering; and increasing intramolecular and intermolecular hydrophobic interactions are well-known to improve simultaneous activity and thermostability. The current review aims to analyze relevant strategies to improve thermostability and activity simultaneously to circumvent the thermostability and activity trade-off of industrial enzymes.
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Affiliation(s)
- Nima Ghahremani Nezhad
- Enzyme and Microbial Research Center, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Raja Noor Zaliha Raja Abd Rahman
- Enzyme and Microbial Research Center, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Yahaya M Normi
- Enzyme and Microbial Research Center, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Siti Nurbaya Oslan
- Enzyme and Microbial Research Center, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Fairolniza Mohd Shariff
- Enzyme and Microbial Research Center, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Thean Chor Leow
- Enzyme and Microbial Research Center, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
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5
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Tan S, Tao X, Zheng P, Chen P, Yu X, Li N, Gao T, Wu D. Thermostability modification of β-mannanase from Aspergillus niger via flexibility modification engineering. Front Microbiol 2023; 14:1119232. [PMID: 36891394 PMCID: PMC9986629 DOI: 10.3389/fmicb.2023.1119232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 01/06/2023] [Indexed: 02/22/2023] Open
Abstract
Introduction β-Mannanases can hydrolyze mannans, which are widely available in nature. However, the optimum temperature of most β-mannanases is too low to be directly utilized in industry. Methods To further improve the thermostability of Anman (mannanase from Aspergillus niger CBS513.88), B-factor and Gibbs unfolding free energy change were used to modify the flexible of Anman, and then combined with multiple sequence alignment and consensus mutation to generate an excellent mutant. At last, we analyzed the intermolecular forces between Anman and the mutant by molecular dynamics simulation. Results The thermostability of combined mutant mut5 (E15C/S65P/A84P/A195P/T298P) was increased by 70% than the wild-type Amman at 70°C, and the melting temperature (Tm) and half-life (t1/2) values were increased by 2°C and 7.8-folds, respectively. Molecular dynamics simulation showed reduced flexibility and additional chemical bonds in the region near the mutation site. Discussion These results indicate that we obtained a Anman mutant that is more suitable for industrial application, and they also confirm that a combination of rational and semi-rational techniques is helpful for screening mutant sites.
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Affiliation(s)
- Shundong Tan
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Xiumei Tao
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Pu Zheng
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Pengcheng Chen
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Xiaowei Yu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Ning Li
- Guangzhou Puratos Food Co., Ltd., Guangzhou, China
| | - Tiecheng Gao
- Guangzhou Puratos Food Co., Ltd., Guangzhou, China
| | - Dan Wu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
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Modification of nitrile hydratase from Rhodococcus erythropolis CCM2595 by semirational design to enhance its substrate affinity. Biointerphases 2022; 17:061007. [PMID: 36456206 DOI: 10.1116/6.0002061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Nitrile hydratase (NHase, EC 4.2.1.84) is an excellent biocatalyst that catalyzes the hydration of nitrile substances to their corresponding amides. Given its catalytic specificity and eco-friendliness, NHase has extensive applications in the chemical, pharmaceutical, and cosmetic industries. To improve the affinity between Rhodococcus erythropolis CCM2595-derived NHase (ReNHase) and adiponitrile, this study used a semirational design to improve the efficiency of ReNHase in catalyzing the generation of 5-cyanopentanamide from adiponitrile. Enzyme kinetics analysis showed that Km of the mutant ReNHaseB:G196Y was 3.265 mmol l-1, which was lower than that of the wild-type NHase. The affinity of the mutant ReNHaseB:G196Y to adiponitrile was increased by 36.35%, and the efficiency of the mutant ReNHaseB:G196Y in catalyzing adiponitrile to 5-cyanopentamide was increased by 10.11%. The analysis of the enzyme-substrate interaction showed that the hydrogen bond length of the mutant ReNHaseB:G196Y to adiponitrile was shortened by 0.59 Å, which enhanced the interaction between the mutant and adiponitrile and, thereby, increased the substrate affinity. Similarly, the structural analysis showed that the amino acid flexibility near the mutation site of ReNHaseB:G196Y was increased, which enhanced the binding force between the enzyme and adiponitrile. Our work may provide a new theoretical basis for the modification of substrate affinity of NHase and increase the possibility of industrial applications of the enzyme.
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7
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Enhancement of the performance of the GH75 family chitosanases by fusing a carbohydrate binding module and insights into their substrate binding mechanisms. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113390] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Li Y, Wang J, Wang F, Wang L, Wang L, Xu Z, Yuan H, Yang X, Li P, Su J, Wang R. Production of 10-Hydroxy-2-decenoic Acid from Decanoic Acid via Whole-Cell Catalysis in Engineered Escherichia coli. CHEMSUSCHEM 2022; 15:e202102152. [PMID: 34796684 DOI: 10.1002/cssc.202102152] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/18/2021] [Indexed: 06/13/2023]
Abstract
10-Hydroxy-2-decenoic acid (10-HDA) is a terminal hydroxylated medium-chain α,β-unsaturated carboxylic acid that performs various unique physiological activities and has a wide market value. Therefore, development of an environmentally friendly, safe, and high-efficiency route to synthesize 10-HDA is required. Here, the β-oxidation pathway of Escherichia coli was modified and a P450 terminal hydroxylase (CYP153A33-CPRBM3 ) was rationally designed to synthesize 10-HDA using decanoic acid as a substrate via two-step whole-cell catalysis. Different homologues of FadDs, FadEs, and YdiIs were analyzed in the first step of the conversion of decanoic acid to trans- -2- decenoic acid. In the second step, CYP153A33 (M228L)-CPRBM3 efficiently catalyzed the conversion of trans- -2- decenoic acid to 10-HDA. Finally, 217 mg L-1 10-HDA was obtained with 500 mg L-1 decanoic acid. This study provides a strategy for biosynthesis of 10-HDA and other α, β-unsaturated carboxylic acid derivatives from specific fatty acids.
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Affiliation(s)
- Yan Li
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Jinan, Shandong, 250353, P. R. China
- Key Laboratory of Shandong Microbial Engineering, QILU University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, P. R. China
| | - Junqing Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Jinan, Shandong, 250353, P. R. China
- Key Laboratory of Shandong Microbial Engineering, QILU University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, P. R. China
| | - Fen Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Jinan, Shandong, 250353, P. R. China
- Key Laboratory of Shandong Microbial Engineering, QILU University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, P. R. China
| | - Li Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Jinan, Shandong, 250353, P. R. China
- Key Laboratory of Shandong Microbial Engineering, QILU University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, P. R. China
| | - Leilei Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Jinan, Shandong, 250353, P. R. China
- Key Laboratory of Shandong Microbial Engineering, QILU University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, P. R. China
| | - Ziqi Xu
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Jinan, Shandong, 250353, P. R. China
- Key Laboratory of Shandong Microbial Engineering, QILU University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, P. R. China
| | - Haibo Yuan
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Jinan, Shandong, 250353, P. R. China
- Key Laboratory of Shandong Microbial Engineering, QILU University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, P. R. China
| | - Xiaohui Yang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Jinan, Shandong, 250353, P. R. China
- Key Laboratory of Shandong Microbial Engineering, QILU University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, P. R. China
| | - Piwu Li
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Jinan, Shandong, 250353, P. R. China
- Key Laboratory of Shandong Microbial Engineering, QILU University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, P. R. China
| | - Jing Su
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Jinan, Shandong, 250353, P. R. China
- Key Laboratory of Shandong Microbial Engineering, QILU University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, P. R. China
| | - Ruiming Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Jinan, Shandong, 250353, P. R. China
- Key Laboratory of Shandong Microbial Engineering, QILU University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, P. R. China
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9
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Dawood A, Ma K. Applications of Microbial β-Mannanases. Front Bioeng Biotechnol 2020; 8:598630. [PMID: 33384989 PMCID: PMC7770148 DOI: 10.3389/fbioe.2020.598630] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 10/28/2020] [Indexed: 11/24/2022] Open
Abstract
Mannans are main components of hemicellulosic fraction of softwoods and they are present widely in plant tissues. β-mannanases are the major mannan-degrading enzymes and are produced by different plants, animals, actinomycetes, fungi, and bacteria. These enzymes can function under conditions of wide range of pH and temperature. Applications of β-mannanases have therefore, been found in different industries such as animal feed, food, biorefinery, textile, detergent, and paper and pulp. This review summarizes the most recent studies reported on potential applications of β-mannanases and bioengineering of β-mannanases to modify and optimize their key catalytic properties to cater to growing demands of commercial sectors.
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Affiliation(s)
- Aneesa Dawood
- Department of Microbiology, Quaid-I-Azam University, Islamabad, Pakistan
- Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, VA, United States
| | - Kesen Ma
- Department of Biology, University of Waterloo, Waterloo, ON, Canada
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10
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Kaira GS, Kapoor M. Molecular advancements on over-expression, stability and catalytic aspects of endo-β-mannanases. Crit Rev Biotechnol 2020; 41:1-15. [PMID: 33032458 DOI: 10.1080/07388551.2020.1825320] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The hydrolysis of mannans by endo-β-mannanases continues to gather significance as exemplified by its commercial applications in food, feed, and a rekindled interest in biorefineries. The present review provides a comprehensive account of fundamental research and fascinating insights in the field of endo-β-mannanase engineering in order to improve over-expression and to decipher molecular determinants governing activity-stability during harsh conditions, substrate recognition, polysaccharide specificity, endo/exo mode of action and multi-functional activities in the modular polypeptide. In-depth analysis of the available literature has also been made on rational and directed evolution approaches, which have translated native endo-β-mannanases into superior biocatalysts for satisfying industrial requirements.
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Affiliation(s)
- Gaurav Singh Kaira
- Department of Protein Chemistry and Technology, CSIR-Central Food Technological Research Institute, Mysuru, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Mukesh Kapoor
- Department of Protein Chemistry and Technology, CSIR-Central Food Technological Research Institute, Mysuru, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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11
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Li C, Hu BC, Wen Z, Hu D, Liu YY, Chu Q, Wu MC. Greatly enhancing the enantioselectivity of PvEH2, a Phaseolus vulgaris epoxide hydrolase, towards racemic 1,2-epoxyhexane via replacing its partial cap-loop. Int J Biol Macromol 2020; 156:225-232. [PMID: 32294502 DOI: 10.1016/j.ijbiomac.2020.04.071] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 04/08/2020] [Accepted: 04/09/2020] [Indexed: 11/30/2022]
Abstract
To achieve the kinetic resolution and enantioconvergent hydrolysis of rac-1,2-epoxyhexane, the E value of PvEH2 was enhanced by substituting its partial cap-loop. Based on the experimental results reported previously and computer-aided analysis, the flexible and variable cap-loop, especially its middle segment, was speculated to be related to the catalytic properties of PvEH2. In view of this, four PvEH2's hybrids, Pv2St, Pv2Pv1, Pv2Vr1 and Pv2Vr2, were designed by substituting the middle segment (190EGMGSNLNTSMP201) of a cap-loop in PvEH2 with the corresponding ones in StEH, PvEH1, VrEH1 and VrEH2, respectively. Then, the hybrid-encoding genes, pv2st, pv2pv1, pv2vr1 and pv2vr2, were constructed by fusion PCR, and expressed in E. coli Rosetta(DE3). The expressed hybrid, Pv2St, displayed the highest specific activity of 35.3 U/mg protein towards rac-1,2-epoxyhexane. The corresponding transformant, E. coli/pv2st, exhibited the largest E value of 24.2, which was 11.5-fold that of E. coli/pveh2 expressing PvEH2. The scale-up kinetic resolution of 280 mM rac-1,2-epoxyhexane was carried out using 40 mg dry cells/mL of E. coli/pv2st at 25 °C for 4.5 h, retaining (S)-1,2-epoxyhexane with >99.5% ees and 36.9% yield. Additionally, the chemo-enzymatic enantioconvergent hydrolysis of rac-1,2-epoxyhexane using E. coli/pv2st followed by sulfuric acid produced (R)-hexane-1,2-diol with 73.0% eep and 86.5% yield.
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Affiliation(s)
- Chuang Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
| | - Bo-Chun Hu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
| | - Zheng Wen
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
| | - Die Hu
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - You-Yi Liu
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Qing Chu
- Joint Management Office, Shanghai Medical Association, Shanghai 200040, PR China.
| | - Min-Chen Wu
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China.
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12
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Li P, Li K, Li X, Zhao F, Wang R, Wang J. Improving enzyme activity of glucosamine-6-phosphate synthase by semi-rational design strategy and computer analysis. Biotechnol Lett 2020; 42:2319-2332. [PMID: 32601959 DOI: 10.1007/s10529-020-02949-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Accepted: 06/24/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To improve enzyme activity of Glucosamine-6-phosphate synthase (Glms) of Bacillus subtilis by site saturation mutagenesis at Leu593, Ala594, Lys595, Ser596 and Val597 based on computer-aided semi-rational design. RESULTS The results indicated that L593S had the greatest effect on the activity of BsGlms and the enzyme activity increased from 5 to 48 U/mL. The mutation of L593S increased the yield of glucosamine by 1.6 times that of the original strain. The binding energy of the mutant with substrate was reduced from - 743.864 to - 768.246 kcal/mol. Molecular dynamics simulation results showed that Ser593 enhanced the flexibility of the protein, which ultimately led to increased enzyme activity. CONCLUSION We successfully improved BsGlms activity through computer simulation and site saturation mutagenesis. This combination of methodologies may fit into an efficient workflow for improving Glms and other proteins activity.
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Affiliation(s)
- Piwu Li
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) (Qilu University of Technology), Jinan, 250353, Shandong, People's Republic of China.,Key Laboratory of Shandong Microbial Engineering, QILU University of Technology (Shandong Academy of Sciences), Jinan, 250353, Shandong, People's Republic of China
| | - Kang Li
- Key Laboratory of Shandong Microbial Engineering, QILU University of Technology (Shandong Academy of Sciences), Jinan, 250353, Shandong, People's Republic of China
| | - Xu Li
- Key Laboratory of Shandong Microbial Engineering, QILU University of Technology (Shandong Academy of Sciences), Jinan, 250353, Shandong, People's Republic of China
| | - Fei Zhao
- Key Laboratory of Shandong Microbial Engineering, QILU University of Technology (Shandong Academy of Sciences), Jinan, 250353, Shandong, People's Republic of China
| | - Ruiming Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) (Qilu University of Technology), Jinan, 250353, Shandong, People's Republic of China.,Key Laboratory of Shandong Microbial Engineering, QILU University of Technology (Shandong Academy of Sciences), Jinan, 250353, Shandong, People's Republic of China
| | - Junqing Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) (Qilu University of Technology), Jinan, 250353, Shandong, People's Republic of China. .,Key Laboratory of Shandong Microbial Engineering, QILU University of Technology (Shandong Academy of Sciences), Jinan, 250353, Shandong, People's Republic of China.
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Enhancement in affinity of Aspergillus niger JMU-TS528 α-L-rhamnosidase (r-Rha1) by semiconservative site-directed mutagenesis of (α/α)6 catalytic domain. Int J Biol Macromol 2020; 151:845-854. [DOI: 10.1016/j.ijbiomac.2020.02.157] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 02/03/2020] [Accepted: 02/14/2020] [Indexed: 12/20/2022]
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Han H, Zeng W, Du G, Chen J, Zhou J. Site-directed mutagenesis to improve the thermostability of tyrosine phenol-lyase. J Biotechnol 2020; 310:6-12. [PMID: 31926982 DOI: 10.1016/j.jbiotec.2020.01.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 12/16/2019] [Accepted: 01/09/2020] [Indexed: 12/29/2022]
Abstract
3,4-Dihydroxyphenyl-L-alanine (L-DOPA) is the most important antiparkinsonian drug, and tyrosine phenol-lyase (TPL)-based enzyme catalysis process is one of the most adopted methods on industrial scale production. TPL activity and stability represent the rate-limiting step in L-DOPA synthesis. Here, 25 TPL mutants were predicted, and two were confirmed as exhibiting the highest L-DOPA production and named E313W and E313M. The L-DOPA production from E313W and E313M was 47.5 g/L and 62.1 g/L, which was 110.2 % and 174.8 % higher, respectively, than that observed from wild-type (WT) TPL. The Km of E313W and E313M showed no apparent decrease, whereas the kcat of E313W and E313M improved by 45.5 % and 36.4 %, respectively, relative to WT TPL. Additionally, E313W and E313M displayed improved thermostability, a higher melting temperature, and enhanced affinity between for pyridoxal-5'-phosphate. Structural analysis of the mutants suggested increased stability of the N-terminal region via enhanced interactions between the mutated residues and H317. Application of these mutants in a substrate fed-batch strategy as whole-cell biocatalysts allows realization of a cost-efficient short fermentation period resulting in high L-DOPA yield.
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Affiliation(s)
- Hongmei Han
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Weizhu Zeng
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China; Jiangsu Provisional Research Center for Bioactive Product Processing Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Guocheng Du
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China; The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Jian Chen
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Jingwen Zhou
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China; Jiangsu Provisional Research Center for Bioactive Product Processing Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China.
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Hu D, Tang C, Li C, Kan T, Shi X, Feng L, Wu M. Stereoselective Hydrolysis of Epoxides by reVrEH3, a Novel Vigna radiata Epoxide Hydrolase with High Enantioselectivity or High and Complementary Regioselectivity. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:9861-9870. [PMID: 29058432 DOI: 10.1021/acs.jafc.7b03804] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
To provide more options for the stereoselective hydrolysis of epoxides, an epoxide hydrolase (VrEH3) gene from Vigna radiata was cloned and expressed in Escherichia coli. Recombinant VrEH3 displayed the maximum activity at pH 7.0 and 45 °C and high stability at pH 4.5-7.5 and 55 °C. Notably, reVrEH3 exhibited high and complementary regioselectivity toward styrene oxides 1a-3a and high enantioselectivity (E = 48.7) toward o-cresyl glycidyl ether 9a. To elucidate these interesting phenomena, the interactions of the three-dimensional structure between VrEH3 and enantiomers of 1a and 9a were analyzed by molecular docking simulation. Using E. coli/vreh3 whole cells, gram-scale preparations of (R)-1b and (R)-9a were performed by enantioconvergent hydrolysis of 100 mM rac-1a and kinetic resolution of 200 mM rac-9a in the buffer-free water system at 25 °C. These afforded (R)-1b with >99% eep and 78.7% overall yield after recrystallization and (R)-9a with >99% ees, 38.7% overall yield, and 12.7 g/L/h space-time yield.
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Affiliation(s)
| | - Cunduo Tang
- Nanyang Provincial Engineering Laboratory of Insect Bio-reactor, Nanyang Normal University , Henan 473061, China
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Site-directed mutagenesis under the direction of in silico protein docking modeling reveals the active site residues of 3-ketosteroid-Δ1-dehydrogenase from Mycobacterium neoaurum. World J Microbiol Biotechnol 2017. [DOI: 10.1007/s11274-017-2310-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Engineering a family 27 carbohydrate-binding module into an Aspergillus usamii β-mannanase to perfect its enzymatic properties. J Biosci Bioeng 2017; 123:294-299. [DOI: 10.1016/j.jbiosc.2016.09.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 09/06/2016] [Accepted: 09/14/2016] [Indexed: 11/21/2022]
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Production, properties, and applications of endo-β-mannanases. Biotechnol Adv 2017; 35:1-19. [DOI: 10.1016/j.biotechadv.2016.11.001] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 10/12/2016] [Accepted: 11/07/2016] [Indexed: 12/27/2022]
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Replacing a piece of loop-structure in the substrate-binding groove of Aspergillus usamii β-mannanase, AuMan5A, to improve its enzymatic properties by rational design. Appl Microbiol Biotechnol 2015; 100:3989-98. [DOI: 10.1007/s00253-015-7224-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 11/12/2015] [Accepted: 12/05/2015] [Indexed: 01/28/2023]
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Expression of a novel epoxide hydrolase of Aspergillus usamii E001 in Escherichia coli and its performance in resolution of racemic styrene oxide. ACTA ACUST UNITED AC 2015; 42:671-80. [DOI: 10.1007/s10295-015-1604-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 02/16/2015] [Indexed: 11/27/2022]
Abstract
Abstract
The full-length cDNA sequence of Aueh2, a gene encoding an epoxide hydrolase of Aspergillus usamii E001 (abbreviated to AuEH2), was amplified from the total RNA. Synchronously, the complete DNA sequence containing 5′, 3′ flanking regions, eight exons and seven introns was cloned from the genomic DNA. In addition, a cDNA fragment of Aueh2 encoding a 395-aa AuEH2 was expressed in Escherichia coli. The catalytic activity of recombinant AuEH2 (re-AuEH2) was 1.44 U/ml using racemic styrene oxide (SO) as the substrate. The purified re-AuEH2 displayed the maximum activity at pH 7.0 and 35 °C. It was highly stable at a pH range of 5.0–7.5, and at 40 °C or below. Its activity was not obviously influenced by β-mercaptoethanol, EDTA and most of metal ions tested, but was inhibited by Hg2+, Sn2+, Cu2+, Fe3+ and Zn2+. The K m and V max of re-AuEH2 were 5.90 mM and 20.1 U/mg towards (R)-SO, while 7.66 mM and 3.19 U/mg towards (S)-SO. Its enantiomeric ratio (E) for resolution of racemic SO was 24.2 at 10 °C. The experimental result of re-AuEH2 biasing towards (R)-SO was consistent with the analytical one by molecular docking (MD) simulation.
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