1
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Zhang Y, Gao Y, Chen J, Yu F, Bao Y. Overexpression and truncation of a novel cold-adapted lipase with improved enzymatic characteristics. Protein Expr Purif 2024; 214:106376. [PMID: 37839629 DOI: 10.1016/j.pep.2023.106376] [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] [Received: 08/06/2023] [Revised: 09/18/2023] [Accepted: 09/24/2023] [Indexed: 10/17/2023]
Abstract
The novel cold-adapted lipase (Lip ZC12) derived from Psychrobacter sp. ZY124 exhibited higher catalytic activity at 20-40 °C, the whole gene was then sequenced, analyzed, and overexpressed. However, its intrinsic structural characteristics lead to a decreased affinity toward the substrate, thus limiting the improvement of catalytic efficiency. Modeling the homologous structure and simulating the binding process of Lip ZC12 with the substrate. It was found that truncated lid (lip-Δlid) could not only increase the kcat, but also significantly enhance the substrate affinity, the substrate affinity and catalytic efficiency of Lip ZC12 modified by lid truncation were significantly improved. The results revealed that the kcat/Km value of lip-Δlid was 1.6 times higher than that of free lipase. This improved catalytic performance of cold-adapted lipase, and these findings laid an important foundation for further application.
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Affiliation(s)
- Yue Zhang
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, China.
| | - Yu Gao
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, China
| | - Jiahui Chen
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, China
| | - Fang Yu
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, China
| | - Yongming Bao
- School of Bioengineering, Dalian University of Technology, Dalian, 116024, China.
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2
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Decewicz P, Romaniuk K, Gorecki A, Radlinska M, Dabrowska M, Wyszynska A, Dziewit L. Structure and functions of a multireplicon genome of Antarctic Psychrobacter sp. ANT_H3: characterization of the genetic modules suitable for the construction of the plasmid-vectors for cold-active bacteria. J Appl Genet 2023; 64:545-557. [PMID: 37145222 PMCID: PMC10457243 DOI: 10.1007/s13353-023-00759-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 04/01/2023] [Accepted: 04/22/2023] [Indexed: 05/06/2023]
Abstract
Among Psychrobacter spp., there are several multireplicon strains, carrying more than two plasmids. Psychrobacter sp. ANT_H3 carries as many as 11 extrachromosomal replicons, which is the highest number in Psychrobacter spp. Plasmids of this strain were subjected to detailed genomic analysis, which enables an insight into the structure and functioning of this multireplicon genome. The replication and conjugal transfer modules of ANT_H3 plasmids were analyzed functionally to discover their potential for being used as building blocks for the construction of novel plasmid-vectors for cold-active bacteria. It was shown that two plasmids have a narrow host range as they were not able to replicate in species other than Psychrobacter, while remaining plasmids had a wider host range and were functional in various Alpha- and Gammaproteobacteria. Moreover, it was confirmed that mobilization modules of seven plasmids were functional, i.e., could be mobilized for conjugal transfer by the RK2 conjugation system. Auxiliary genes were also distinguished in ANT_H3 plasmids, including these encoding putative DNA-protecting protein DprA, multidrug efflux SMR transporter of EmrE family, glycine cleavage system T protein, MscS small-conductance mechanosensitive channel protein, and two type II restriction-modification systems. Finally, all genome-retrieved plasmids of Psychrobacter spp. were subjected to complex genome- and proteome-based comparative analyses showing that Antarctic replicons are significantly different from plasmids from other locations.
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Affiliation(s)
- Przemyslaw Decewicz
- Department of Environmental Microbiology and Biotechnology, Institute of Microbiology, Faculty of Biology, University of Warsaw, Warsaw, Poland
- Flinders Accelerator for Microbiome Exploration, College of Science and Engineering, Flinders University, Adelaide, Australia
| | - Krzysztof Romaniuk
- Department of Environmental Microbiology and Biotechnology, Institute of Microbiology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Adrian Gorecki
- Department of Biochemistry and Microbiology, Institute of Biology, Warsaw University of Life Sciences (SGGW), Warsaw, Poland
| | - Monika Radlinska
- Department of Environmental Microbiology and Biotechnology, Institute of Microbiology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Maria Dabrowska
- Department of Environmental Microbiology and Biotechnology, Institute of Microbiology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Agnieszka Wyszynska
- Department of Bacterial Genetics, Institute of Microbiology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Lukasz Dziewit
- Department of Environmental Microbiology and Biotechnology, Institute of Microbiology, Faculty of Biology, University of Warsaw, Warsaw, Poland.
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3
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Xu L, Zhang Y, Liu N, Wei Z, Wang Z, Wang Y, Wang S. Purification and characterization of cold-adapted and salt-tolerant dextranase from Cellulosimicrobium sp. THN1 and its potential application for treatment of dental plaque. Front Microbiol 2022; 13:1012957. [PMID: 36439846 PMCID: PMC9691899 DOI: 10.3389/fmicb.2022.1012957] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 10/17/2022] [Indexed: 10/28/2023] Open
Abstract
The cold-adapted and/or salt-tolerant enzymes from marine microorganisms were confirmed to be meritorious tools to enhance the efficiency of biocatalysis in industrial biotechnology. We purified and characterized a dextranase CeDex from the marine bacterium Cellulosimicrobium sp. THN1. CeDex acted in alkaline pHs (7.5-8.5) and a broad temperature range (10-50°C) with sufficient pH stability and thermostability. Remarkably, CeDex retained approximately 40% of its maximal activities at 4°C and increased its activity to 150% in 4 M NaCl, displaying prominently cold adaptation and salt tolerance. Moreover, CeDex was greatly stimulated by Mg2+, Na+, Ba2+, Ca2+ and Sr2+, and sugarcane juice always contains K+, Ca2+, Mg2+ and Na+, so CeDex will be suitable for removing dextran in the sugar industry. The main hydrolysate of CeDex was isomaltotriose, accompanied by isomaltotetraose, long-chain IOMs, and a small amount of isomaltose. The amino acid sequence of CeDex was identified from the THN1 genomic sequence by Nano LC-MS/MS and classified into the GH49 family. Notably, CeDex could prevent the formation of Streptococcus mutans biofilm and disassemble existing biofilms at 10 U/ml concentration and would have great potential to defeat biofilm-related dental caries.
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Affiliation(s)
- Linxiang Xu
- Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, China
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China
- Jiangsu Institute of Marine Resources Development, Jiangsu Ocean University, Lianyungang, China
| | - Yan Zhang
- School of Marine Science and Fisheries, Jiangsu Ocean University, Lianyungang, China
| | - Nannan Liu
- Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, China
- Jiangsu Institute of Marine Resources Development, Jiangsu Ocean University, Lianyungang, China
| | - Zhen Wei
- Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, China
- Jiangsu Institute of Marine Resources Development, Jiangsu Ocean University, Lianyungang, China
| | - Zhen Wang
- Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, China
- Jiangsu Institute of Marine Resources Development, Jiangsu Ocean University, Lianyungang, China
| | - Yonghua Wang
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China
| | - Shujun Wang
- Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, China
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4
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Matrawy AA, Khalil AI, Embaby AM. Molecular study on recombinant cold-adapted, detergent- and alkali stable esterase (EstRag) from Lysinibacillus sp.: a member of family VI. World J Microbiol Biotechnol 2022; 38:217. [PMID: 36070019 PMCID: PMC9452428 DOI: 10.1007/s11274-022-03402-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 08/26/2022] [Indexed: 11/30/2022]
Abstract
Cold-adapted esterases have potential industrial applications. To fulfil the global continuous demand for these enzymes, a cold-adapted esterase member of family VI from Lysinibacillus sp. YS11 was cloned on pET-28b (+) vector and expressed in E. coli BL21(DE3) Rosetta cells for the first time. The open reading frame (654 bp: GenBank MT120818.1) encodes a polypeptide (designated EstRag: 217 amino acid residues). EstRag amino acid sequence has conserved esterase signature motifs: pentapeptide (GFSQG) and catalytic triad Ser110-Asp163-His194. EstRag 3D predicted model, built with LOMETS3 program, showed closest structural similarity to PDB 1AUO_A (esterase: Pseudomonas fluorescens); TM-align score program inferences. Purified EstRag to 9.28-fold, using Ni2+affinity agarose matrix, showed a single protein band (25 kDa) on SDS-PAGE, Km (0.031 mM) and Kcat/Km (657.7 s−1 mM−1) on p-NP-C2. Temperature and pH optima of EstRag were 35 °C and 8.0, respectively. EstRag was fully stable at 5–30 °C for 120 min and at pH(s) 8.0–10.0 after 24 h. EstRag activity (391.46 ± 0.009%) was impressively enhanced after 30 min preincubation with 5 mM Cu2+. EstRag retained full stability after 30 min pre-incubation with 0.1%(v/v) SDS, Triton X-100, and Tween-80. EstRag promising characteristics motivate performing guided evolution and industrial applications prospective studies.
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Affiliation(s)
- Amira A Matrawy
- Environmental Studies Department, Institute of Graduate Studies and Research, Alexandria University, 163 Horreya Avenue, P.O. Box 832, Chatby, 21526, Alexandria, Egypt
| | - Ahmed I Khalil
- Environmental Studies Department, Institute of Graduate Studies and Research, Alexandria University, 163 Horreya Avenue, P.O. Box 832, Chatby, 21526, Alexandria, Egypt
| | - Amira M Embaby
- Biotechnology Department, Institute of Graduate Studies and Research, Alexandria University, 163 Horreya Avenue, P.O. Box 832, Chatby, 21526, Alexandria, Egypt.
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Lu Y, Teo JN, Liu SQ. Fermented shellfish condiments: A comprehensive review. Compr Rev Food Sci Food Saf 2022; 21:4447-4477. [PMID: 36038528 DOI: 10.1111/1541-4337.13024] [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: 05/29/2021] [Revised: 07/07/2022] [Accepted: 07/25/2022] [Indexed: 01/28/2023]
Abstract
Fermented shellfish condiments are globally consumed especially among Asian countries. Condiments, commonly used as flavor enhancers, have unique sensory characteristics and are associated with umami and meaty aroma. The main reactions that occur during fermentation of shellfish include proteolysis by endogenous enzymes and microbial activities to produce peptides and amino acids. The actions of proteolytic enzymes and microorganisms (predominantly bacteria) are found to be largely responsible for the formation of taste and aroma compounds. This review elaborates different aspects of shellfish fermentation including classification, process, substrates, microbiota, changes in both physicochemical and biochemical components, alterations in nutritional composition, flavor characteristics and sensory profiles, and biological activities and their undesirable impacts on health. The characteristics of traditional shellfish production such as long duration and high salt concentration not only limit nutritional value but also inhibit the formation of toxic biogenic amines. In addition, this review article also covers novel bioprocesses such as low salt fermentation and use of novel starter cultures and/or novel enzymes to accelerate fermentation and produce shellfish condiments that are of better quality and safer for consumption. Practical Application: The review paper summarized the comprehensive information on shellfish fermentation to provide alternative strategies to produce shellfish comdiments that are of better quality and safer for consumption.
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Affiliation(s)
- Yuyun Lu
- Department of Food Science & Technology, Faculty of Science, National University of Singapore, Singapore
| | - Jun Ning Teo
- Department of Food Science & Technology, Faculty of Science, National University of Singapore, Singapore
| | - Shao Quan Liu
- Department of Food Science & Technology, Faculty of Science, National University of Singapore, Singapore.,National University of Singapore (Suzhou) Research Institute, Suzhou, China
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6
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Sustainable Biosynthesis of Esterase Enzymes of Desired Characteristics of Catalysis for Pharmaceutical and Food Industry Employing Specific Strains of Microorganisms. SUSTAINABILITY 2022. [DOI: 10.3390/su14148673] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Reactions catalysed by sustainably produced enzymes can contribute to the bioeconomy supporting several industries. Low-value compounds can be transformed into added-value products or high-resolution chemicals could be prepared in reactions catalysed by biocatalyst esterase enzymes. These enzymes can be synthesised by purposely isolated or genetically modified strains of microorganisms. Enzymes belonging to the hydrolase family catalyse the formation and hydrolysis of ester bonds to produce the desired esterified molecule. The synthesis of homo-chiral compounds can be accomplished either by chemical or biocatalytic processes, the latter being preferred with the use of microbial esterases. For varied applications, esterases with high stability and retained activity at lower and higher temperatures have been produced with strains isolated from extreme environments. For sustainable production of enzymes, higher productivity has been achieved by employing fast-growing Escherichia coli after incorporating plasmids of required characteristics from specific isolates. This is a review of the isolated and engineered strains used in the biosynthesis of esterase of the desired property, with the objective of a sustainable supply of enzymes, to produce products of industrial importance contributing to the economy.
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Tang XD, Dong FY, Zhang QH, Lin L, Wang P, Xu XY, Wei W, Wei DZ. Protein engineering of a cold-adapted rhamnogalacturonan acetylesterase: In vivo functional expression and cinnamyl acetate synthesis. Process Biochem 2021. [DOI: 10.1016/j.procbio.2021.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Tulsani NJ, Mishra P, Jakhesara SJ, Srivastava S, Jyotsana B, Dafale NA, Patil NV, Purohit HJ, Joshi CG. Isolation, purification and characterization of a novel esterase from camel rumen metagenome. Protein Expr Purif 2021; 187:105941. [PMID: 34273540 DOI: 10.1016/j.pep.2021.105941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 07/12/2021] [Accepted: 07/13/2021] [Indexed: 10/20/2022]
Abstract
Bacterial esterases are gaining the importance in pharmaceuticals and agrochemical industries due to their excellent biocatalytic properties and a wide range of applications. In the present study, a novel gene encoding an esterase (designated as Est-CR) was identified from shotgun metagenomic sequencing data of camel rumen (Camelus dromedarius) liquor. The open reading frame consisted of 1,224bp, which showed 84.03% sequence identity to Bacteroidales bacterium, corresponding to a protein of 407 amino acids and has a catalytic domain belonging to an esterase. Est-CR belonged to family V with GLSMG domain. The purified enzyme with a molecular mass of 62.64 kDa was checked on SDS-PAGE, and its expression was confirmed by western blotting. The enzyme was active and stable over a broad range of temperature (35-65 °C), displayed the maximum activity at 50 °C and pH 7.0. Individually all metal ions inhibited the enzyme activity, while in combination, K2+, Ca2+, Mg2+ and Mn2+ metal ions enhanced the enzyme activity. The detergents strongly inhibited the activity, while EDTA (10 mM) increased the activity of the Est-CR enzyme. The enzyme showed specificity to short-chain substrates and displayed an optimum activity against butyrate ester. This novel enzyme might serve as a promising candidate to meet some harsh industrial processes enzymatic needs.
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Affiliation(s)
- Nilam J Tulsani
- Department of Animal Biotechnology, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand, Gujarat, 388001, India
| | - Priyaranjan Mishra
- Department of Animal Genetic and Breeding, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand, Gujarat, 388001, India
| | - Subhash J Jakhesara
- Department of Animal Biotechnology, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand, Gujarat, 388001, India.
| | - Shweta Srivastava
- Environmental Genomic Division, CSIR-National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur, 440020, India
| | - Basanti Jyotsana
- ICAR-National Research Centre on Camel (NRCC) Jorbeer, Bikaner, Rajasthan, 334001, India
| | - Nishant A Dafale
- Environmental Genomic Division, CSIR-National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur, 440020, India
| | - Niteen V Patil
- ICAR-Central Arid Zone Research Institute, Jodhpur, Rajasthan, 342003, India
| | - Hemant J Purohit
- Environmental Genomic Division, CSIR-National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur, 440020, India
| | - Chaitanya G Joshi
- Department of Animal Biotechnology, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand, Gujarat, 388001, India; Gujarat Biotechnology Research Canter, MS Building, Block B & D, 6th Floor, GH Road, Sector-11, Gandhinagar, Gujarat, 382001, India
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9
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AhaP, A Quorum Quenching Acylase from Psychrobacter sp. M9-54-1 That Attenuates Pseudomonas aeruginosa and Vibrio coralliilyticus Virulence. Mar Drugs 2021; 19:md19010016. [PMID: 33401388 PMCID: PMC7823738 DOI: 10.3390/md19010016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 12/22/2020] [Accepted: 12/27/2020] [Indexed: 12/11/2022] Open
Abstract
Although Psychrobacter strain M9-54-1 had been previously isolated from the microbiota of holothurians and shown to degrade quorum sensing (QS) signal molecules C6 and C10-homoserine lactone (HSL), little was known about the gene responsible for this activity. In this study, we determined the whole genome sequence of this strain and found that the full 16S rRNA sequence shares 99.78-99.66% identity with Psychrobacter pulmonis CECT 5989T and P. faecalis ISO-46T. M9-54-1, evaluated using the agar well diffusion assay method, showed high quorum quenching (QQ) activity against a wide range of synthetic N-acylhomoserine lactone (AHLs) at 4, 15, and 28 °C. High-performance liquid chromatography-mass-spectrometry (HPLC-MS) confirmed that QQ activity was due to an AHL-acylase. The gene encoding for QQ activity in strain M9-54-1 was identified from its genome sequence whose gene product was named AhaP. Purified AhaP degraded substituted and unsubstituted AHLs from C4- to C14-HSL. Furthermore, heterologous expression of ahaP in the opportunistic pathogen Pseudomonas aeruginosa PAO1 reduced the expression of the QS-controlled gene lecA, encoding for a cytotoxic galactophilic lectin and swarming motility protein. Strain M9-54-1 also reduced brine shrimp mortality caused by Vibrio coralliilyticus VibC-Oc-193, showing potential as a biocontrol agent in aquaculture.
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Characterization of a novel halotolerant esterase from Chromohalobacter canadensis isolated from salt well mine. 3 Biotech 2020; 10:430. [PMID: 32983823 DOI: 10.1007/s13205-020-02420-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 08/31/2020] [Indexed: 12/13/2022] Open
Abstract
A esterase gene was characterized from a halophilic bacterium Chromohalobacter canadensis which was originally isolated from a salt well mine. Sequence analysis showed that the esterase, named as EstSHJ2, contained active site serine encompassed by a conserved pentapeptide motif (GSSMG). The EstSHJ2 was classified into a new lipase/esterase family by phylogenetic association analysis. Molecular weight of EstSHJ2 was 26 kDa and the preferred substrate was p-NP butyrate. The EstSHJ2 exhibited a maximum activity at 2.5 M NaCl concentration. Intriguingly, the optimum temperature, pH and stability of EstSHJ2 were related to NaCl concentration. At 2.5 M NaCl concentration, the optimum temperature and pH of EstSHJ2 were 65 ℃ and pH 9.0, and enzyme remained 81% active after 80 ℃ treatment for 2 h. Additionally, the EstSHJ2 showed strong tolerance to metal ions and organic solvents. Among these, 10 mM K+, Ca2+ , Mg2+ and 30% hexane, benzene, toluene has significantly improved activity of EstSHJ2. The EstSHJ2 was the first reported esterase from Chromohalobacter canadensis, and may carry considerable potential for industrial applications under extreme conditions.
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Jin M, Gai Y, Guo X, Hou Y, Zeng R. Properties and Applications of Extremozymes from Deep-Sea Extremophilic Microorganisms: A Mini Review. Mar Drugs 2019; 17:md17120656. [PMID: 31766541 PMCID: PMC6950199 DOI: 10.3390/md17120656] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 11/18/2019] [Accepted: 11/19/2019] [Indexed: 01/09/2023] Open
Abstract
The deep sea, which is defined as sea water below a depth of 1000 m, is one of the largest biomes on the Earth, and is recognised as an extreme environment due to its range of challenging physical parameters, such as pressure, salinity, temperature, chemicals and metals (such as hydrogen sulphide, copper and arsenic). For surviving in such extreme conditions, deep-sea extremophilic microorganisms employ a variety of adaptive strategies, such as the production of extremozymes, which exhibit outstanding thermal or cold adaptability, salt tolerance and/or pressure tolerance. Owing to their great stability, deep-sea extremozymes have numerous potential applications in a wide range of industries, such as the agricultural, food, chemical, pharmaceutical and biotechnological sectors. This enormous economic potential combined with recent advances in sampling and molecular and omics technologies has led to the emergence of research regarding deep-sea extremozymes and their primary applications in recent decades. In the present review, we introduced recent advances in research regarding deep-sea extremophiles and the enzymes they produce and discussed their potential industrial applications, with special emphasis on thermophilic, psychrophilic, halophilic and piezophilic enzymes.
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Affiliation(s)
- Min Jin
- State Key Laboratory Breeding Base of Marine Genetic Resource, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361000, China; (M.J.); (Y.G.); (X.G.); (Y.H.)
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China
| | - Yingbao Gai
- State Key Laboratory Breeding Base of Marine Genetic Resource, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361000, China; (M.J.); (Y.G.); (X.G.); (Y.H.)
| | - Xun Guo
- State Key Laboratory Breeding Base of Marine Genetic Resource, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361000, China; (M.J.); (Y.G.); (X.G.); (Y.H.)
| | - Yanping Hou
- State Key Laboratory Breeding Base of Marine Genetic Resource, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361000, China; (M.J.); (Y.G.); (X.G.); (Y.H.)
| | - Runying Zeng
- State Key Laboratory Breeding Base of Marine Genetic Resource, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361000, China; (M.J.); (Y.G.); (X.G.); (Y.H.)
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China
- Correspondence: ; Tel.: +86-592-2195323
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12
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Du F, Zhang X, Gu H, Song J, Gao X. Dynamic Changes in the Bacterial Community During the Fermentation of Traditional Chinese Fish Sauce (TCFS) and Their Correlation with TCFS Quality. Microorganisms 2019; 7:E371. [PMID: 31546947 PMCID: PMC6780869 DOI: 10.3390/microorganisms7090371] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 09/16/2019] [Accepted: 09/17/2019] [Indexed: 12/29/2022] Open
Abstract
This study revealed for the first time the dynamic changes of the bacterial community during the fermentation of traditional Chinese fish sauce (TCFS) using high-throughput sequencing. In the early phase of TCFS fermentation, Shewanella (approximately 90%) within Proteobacteria was the dominant bacteria. Then, Halanaerobium (3%-86%) within Firmicutes rapidly replaced Shewanella as the dominant genus until the 12th month. Lactococcus (3.31%) and Bacillus (45.56%) belonging to Firmicutes were detected abundantly in the 3rd and 9th months after fermentation, respectively. In the late phase (12-15 months), Tetragenococcus within Firmicutes replaced Halanaerobium as the most dominant bacteria (29.54%). Many other genera including Pseudomonas, Psychrobacter, Tissierella, Carnobacterium and Gallicola were abundantly present in the 15th month after fermentation. Furthermore, the relationships between the bacterial community and major functional substances of TCFS, including amino nitrogen (AAN), free amino acids (FAAs), total soluble nitrogen (TSN), and trimethylamine (TMA), were investigated by partial least squares regression (PLSR). Tetragenococcus was positively correlated with the formation of TMA, while Halanaerobium showed the opposite result, suggesting that Tetragenococcus might be a good starter for TCFS fermentation. These results contribute to our knowledge about bacterial participation in the process of TCFS fermentation and will help improve the quality of fermented seafood.
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Affiliation(s)
- Fangmin Du
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
| | - Xiaoyong Zhang
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China.
| | - Huarong Gu
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
| | - Jiajia Song
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
| | - Xiangyang Gao
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
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13
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Hong LG, Jian SL, Huo YY, Cheng H, Hu XJ, Li J, Cui HL, Xu XW. A novel SGNH family hydrolase Ali5 with thioesterase activity and a GNSL motif but without a classic GDSL motif from Altererythrobacter ishigakiensis. Biotechnol Lett 2019; 41:591-604. [DOI: 10.1007/s10529-019-02662-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 03/15/2019] [Indexed: 11/29/2022]
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14
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Salwoom L, Raja Abd Rahman RNZ, Salleh AB, Mohd Shariff F, Convey P, Mohamad Ali MS. New Recombinant Cold-Adapted and Organic Solvent Tolerant Lipase from Psychrophilic Pseudomonas sp. LSK25, Isolated from Signy Island Antarctica. Int J Mol Sci 2019; 20:ijms20061264. [PMID: 30871178 PMCID: PMC6470613 DOI: 10.3390/ijms20061264] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 01/30/2019] [Accepted: 02/10/2019] [Indexed: 01/03/2023] Open
Abstract
In recent years, studies on psychrophilic lipases have become an emerging area of research in the field of enzymology. The study described here focuses on the cold-adapted organic solvent tolerant lipase strain Pseudomonas sp. LSK25 isolated from Signy Station, South Orkney Islands, maritime Antarctic. Strain LSK25 lipase was successfully cloned, sequenced, and over-expressed in an Escherichia coli system. Sequence analysis revealed that the lipase gene of Pseudomonas sp. LSK25 consists of 1432 bp, lacks an N-terminal signal peptide and encodes a mature protein consisting of 476 amino acids. The recombinant LSK25 lipase was purified by single-step purification using Ni-Sepharose affinity chromatography and had a molecular mass of approximately 65 kDa. The final recovery and purification fold were 44% and 1.3, respectively. The LSK25 lipase was optimally active at 30 °C and at pH 6. Stable lipolytic activity was reported between temperatures of 5–30 °C and at pH 6–8. A significant enhancement of lipolytic activity was observed in the presence of Ca2+ ions, the organic lipids of rice bran oil and coconut oil, a synthetic C12 ester and a wide range of water immiscible organic solvents. Overall, lipase strain LSK25 is a potentially desirable candidate for biotechnological application, due to its stability at low temperatures, across a range of pH and in organic solvents.
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Affiliation(s)
- Leelatulasi Salwoom
- Enzyme and Microbial Technology Research Center, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang Selangor 43400, Malaysia.
- National Antarctic Research Centre (NARC) B303, Block B, Level 3, IPS Building, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Raja Noor Zaliha Raja Abd Rahman
- Enzyme and Microbial Technology Research Center, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang Selangor 43400, Malaysia.
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang Selangor 43400, Malaysia.
| | - Abu Bakar Salleh
- Enzyme and Microbial Technology Research Center, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang Selangor 43400, Malaysia.
| | - Fairolniza Mohd Shariff
- Enzyme and Microbial Technology Research Center, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang Selangor 43400, Malaysia.
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang Selangor 43400, Malaysia.
| | - Peter Convey
- British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge CB3 OET, UK.
| | - Mohd Shukuri Mohamad Ali
- Enzyme and Microbial Technology Research Center, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang Selangor 43400, Malaysia.
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Science, Universiti Putra Malaysia, Serdang Selangor 43400, Malaysia.
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Characterization and improved properties of Glutamine synthetase from Providencia vermicola by site-directed mutagenesis. Sci Rep 2018; 8:15640. [PMID: 30353099 PMCID: PMC6199252 DOI: 10.1038/s41598-018-34022-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 06/19/2018] [Indexed: 11/08/2022] Open
Abstract
In this study, a novel gene for Glutamine synthetase was cloned and characterized for its activities and stabilities from a marine bacterium Providencia vermicola (PveGS). A mutant S54A was generated by site directed mutagenesis, which showed significant increase in the activity and stabilities at a wide range of temperatures. The Km values of PveGS against hydroxylamine, ADP-Na2 and L-Glutamine were 15.7 ± 1.1, (25.2 ± 1.5) × 10-5 and 32.6 ± 1.7 mM, and the kcat were 17.0 ± 0.6, 9.14 ± 0.12 and 30.5 ± 1.0 s-1 respectively. In-silico-analysis revealed that the replacement of Ser at 54th position with Ala increased the catalytic activity of PveGS. Therefore, catalytic efficiency of mutant S54A had increased by 3.1, 0.89 and 2.9-folds towards hydroxylamine, ADP-Na2 and L-Glutamine respectively as compared to wild type. The structure prediction data indicated that the negatively charged pocket becomes enlarged and hydrogen bonding in Ser54 steadily promotes the product release. Interestingly, the residual activity of S54A mutant was increased by 10.7, 3.8 and 3.8 folds at 0, 10 and 50 °C as compared to WT. Structural analysis showed that S54A located on the loop near to the active site improved its flexibility due to the breaking of hydrogen bonds between product and enzyme. This also facilitated the enzyme to increase its cold adaptability as indicated by higher residual activity shown at 0 °C. Thus, replacement of Ala to Ser54 played a pivotal role to enhance the activities and stabilities at a wide range of temperatures.
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Kumar A, Wu G, Wu Z, Kumar N, Liu Z. Improved catalytic properties of a serine hydroxymethyl transferase from Idiomarina loihiensis by site directed mutagenesis. Int J Biol Macromol 2018; 117:1216-1223. [PMID: 29727646 DOI: 10.1016/j.ijbiomac.2018.05.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 04/05/2018] [Accepted: 05/01/2018] [Indexed: 11/17/2022]
Abstract
A novel glyA gene was screened from a marine bacterium, Idiomarina loihiensis encoding a thermo-stable serine hydroxymethyl transferase (SHMT; 418 AA; 45.4 kDa). The activities of wild type (WT) and mutants were analyzed against d-phenylserine using pyrodoxal-5-phosphate (PLP) as cofactor under optimized conditions. Based on homology modelling and molecular docking, several residues were found that may be able to improve the activity of WT-SHMT. Site directed mutagenesis was conducted. The activity and thermostability of the wild type SHMT was improved by two variants H61G and G132P, which showed a noteworthy change in the thermo-stability and activity as compared to WT. To investigate the mechanism of activity of mutants, we combined two residues into one mutant DUAL. WT showed the optimum activity at 50 °C, whereas H61G, G132P and DUAL had the temperature optima of 55, 60 and 60 °C, respectively. These mutants G132P, H61G and DUAL were quite stable at 45 and 55 °C as compared to WT. Dual mutant was relatively more stable at all tested pH(s) while WT loses its activity in alkaline pH(s). Kinetics studies indicated the 1.52, 2.42 and 4.54 folds increase in the kcat value of H61G, G132P and Dual mutants as compared to WT respectively. The molecular docking indicated that hydrophobic interactions are more prominent than hydrogen-bonding and had more influence on ligand binding and active site cavity. The molecular dynamics showed the changed RMSD values for ligand and formation of new hydrogen bonds, hydrophobic interaction which considerably increased the activity and thermo-stability of the mutant proteins as compared to WT. Thus, increased stabilities at higher temperatures and activities can be attributed to new hydrogen bonding, altered active site geometry and increased ligand interactions.
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Affiliation(s)
- Ashok Kumar
- College of Life Science and Technology, State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430 070, China; Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, Solan, 172 234, Himachal Pradesh, India
| | - Gaobing Wu
- College of Life Science and Technology, State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430 070, China
| | - Zuo Wu
- College of Life Science and Technology, State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430 070, China
| | - Narendra Kumar
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, Solan, 172 234, Himachal Pradesh, India
| | - Ziduo Liu
- College of Life Science and Technology, State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430 070, China.
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17
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Zhang W, Xu H, Wu Y, Zeng J, Guo Z, Wang L, Shen C, Qiao D, Cao Y. A new cold-adapted, alkali-stable and highly salt-tolerant esterase from Bacillus licheniformis. Int J Biol Macromol 2018; 111:1183-1193. [DOI: 10.1016/j.ijbiomac.2018.01.152] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 01/17/2018] [Accepted: 01/21/2018] [Indexed: 12/20/2022]
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18
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Rong Z, Huo YY, Jian SL, Wu YH, Xu XW. Characterization of a novel alkaline esterase from Altererythrobacter epoxidivorans CGMCC 1.7731 T. Prep Biochem Biotechnol 2018; 48:113-120. [PMID: 29099313 DOI: 10.1080/10826068.2017.1387559] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
A novel esterase gene (e25) was identified from Altererythrobacter epoxidivorans CGMCC 1.7731T by genome sequence screening. The e25 gene is 948 nucleotides in length and encodes a 315 amino acid protein (E25) with a predicted molecular mass of 33,683 Da. A phylogenetic tree revealed that E25 belongs to the hormone-sensitive lipase (HSL) family of lipolytic enzymes. An activity assay of E25 showed that it exhibited the highest catalytic efficiency when using p-nitrophenyl caproate (C6) as a substrate. The optimum pH and temperature were determined to be approximately pH 9 and 45°C, and the Km and Vmax values were 0.12 mM and 1,772 µmol/min/mg, respectively. After an incubation at 40°C for 80 min, E25 retained 75% of its basal activity. The enzyme exhibited good tolerance to metal cations, such as Ba2+, Ca2+, and Cu2+ (10 mM), but its activity was strongly inhibited by Co2+, Ni2+, Mn2+, and Zn2+. The E25 enzyme was stimulated by glycerol and retained over 60% of its basal activity in the presence of 1% Tween-80 and Triton X-100. Overall, the activity of E25 under alkaline conditions and its organic solvent and detergent tolerance indicate that E25 could be useful as a novel industrial catalyst in biotechnological applications.
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Affiliation(s)
- Zhen Rong
- a Key Laboratory of Marine Ecosystem and Biogeochemistry , Second Institute of Oceanography, State Oceanic Administration , Hangzhou , China
| | - Ying-Yi Huo
- a Key Laboratory of Marine Ecosystem and Biogeochemistry , Second Institute of Oceanography, State Oceanic Administration , Hangzhou , China
| | - Shu-Ling Jian
- a Key Laboratory of Marine Ecosystem and Biogeochemistry , Second Institute of Oceanography, State Oceanic Administration , Hangzhou , China
| | - Yue-Hong Wu
- a Key Laboratory of Marine Ecosystem and Biogeochemistry , Second Institute of Oceanography, State Oceanic Administration , Hangzhou , China
| | - Xue-Wei Xu
- a Key Laboratory of Marine Ecosystem and Biogeochemistry , Second Institute of Oceanography, State Oceanic Administration , Hangzhou , China
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Zhang Y, Ji F, Wang J, Pu Z, Jiang B, Bao Y. Purification and characterization of a novel organic solvent-tolerant and cold-adapted lipase from Psychrobacter sp. ZY124. Extremophiles 2018; 22:287-300. [DOI: 10.1007/s00792-018-0997-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 12/23/2017] [Indexed: 01/17/2023]
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20
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Schmitz-Esser S, Dzieciol M, Nischler E, Schornsteiner E, Bereuter O, Mann E, Wagner M. Abundance and potential contribution of Gram-negative cheese rind bacteria from Austrian artisanal hard cheeses. Int J Food Microbiol 2017; 266:95-103. [PMID: 29190534 DOI: 10.1016/j.ijfoodmicro.2017.11.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 10/23/2017] [Accepted: 11/18/2017] [Indexed: 11/19/2022]
Abstract
Many different Gram-negative bacteria have been shown to be present on cheese rinds. Their contribution to cheese ripening is however, only partially understood until now. Here, cheese rind samples were taken from Vorarlberger Bergkäse (VB), an artisanal hard washed-rind cheese from Austria. Ripening cellars of two cheese production facilities in Austria were sampled at the day of production and after 14, 30, 90 and 160days of ripening. To obtain insights into the possible contribution of Advenella, Psychrobacter, and Psychroflexus to cheese ripening, we sequenced and analyzed the genomes of one strain of each genus isolated from VB cheese rinds. Additionally, quantitative PCRs (qPCRs) were performed to follow the abundance of Advenella, Psychrobacter, and Psychroflexus on VB rinds during ripening in both facilities. qPCR results showed that Psychrobacter was most abundant on cheese rinds and the abundance of Advenella decreased throughout the first month of ripening and increased significantly after 30days of ripening (p<0.01). Psychrobacter and Psychroflexus increased significantly during the first 30 ripening days (p<0.01), and decreased to their initial abundance during the rest of the ripening time (p<0.05). Genome sequencing resulted in 17 to 27 contigs with assembly sizes of 2.7 Mbp for Psychroflexus, 3 Mbp for Psychrobacter, and 4.3 Mbp for Advenella. Our results reveal that each genome harbors enzymes shown to be important for cheese ripening in other bacteria such as: Cystathionine/Methionine beta or gamma-lyases, many proteases and peptidases (including proline iminopeptidases), aminotransferases, and lipases. Thus, all three isolates have the potential to contribute positively to cheese ripening. In conclusion, the three species quantified were stable community members throughout the ripening process and their abundance on cheese rinds together with the results from genome sequencing suggest an important contribution of these bacteria to cheese ripening.
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Affiliation(s)
- Stephan Schmitz-Esser
- Institute for Milk Hygiene, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine, 1210 Vienna, Austria.
| | - Monika Dzieciol
- Institute for Milk Hygiene, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine, 1210 Vienna, Austria
| | - Eva Nischler
- Institute for Milk Hygiene, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine, 1210 Vienna, Austria
| | - Elisa Schornsteiner
- Institute for Milk Hygiene, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine, 1210 Vienna, Austria
| | | | - Evelyne Mann
- Institute for Milk Hygiene, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine, 1210 Vienna, Austria
| | - Martin Wagner
- Institute for Milk Hygiene, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine, 1210 Vienna, Austria
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21
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Genome content, metabolic pathways and biotechnological potential of the psychrophilic Arctic bacterium Psychrobacter sp. DAB_AL43B, a source and a host of novel Psychrobacter-specific vectors. J Biotechnol 2017; 263:64-74. [PMID: 28919459 DOI: 10.1016/j.jbiotec.2017.09.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 09/10/2017] [Accepted: 09/14/2017] [Indexed: 01/06/2023]
Abstract
Psychrobacter sp. DAB_AL43B, isolated from ornithogenic soil collected on the Arctic island of Spitsbergen, is a newly sequenced psychrophilic strain susceptible to conjugation and electrotransformation. Its genome consists of a circular chromosome (3.3 Mb) and four plasmids (4.4-6.4kb). In silico genome mining and microarray-based phenotypic analysis were performed to describe the metabolic potential of this strain and identify possible biotechnological applications. Metabolic reconstruction indicated that DAB_AL43B prefers low-molecular-weight carboxylates and amino acids as carbon and energy sources. Genetic determinants of heavy-metal resistance, anthracene degradation and possible aerobic denitrification were also identified. Comparative analyses revealed a relatively close relationship between DAB_AL43B and other sequenced Psychrobacter species. In addition, the plasmids of this strain were used as the basis for the construction of Escherichia coli-Psychrobacter spp. shuttle vectors. Taken together, the results of this work suggest that DAB_AL43B is a promising candidate as a new model strain for studies on Psychrobacter spp.
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22
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Dong J, Gasmalla MAA, Zhao W, Sun J, Liu W, Wang M, Han L, Yang R. Characterization of a cold-adapted esterase and mutants from a psychotolerant Pseudomonas
sp. strain. Biotechnol Appl Biochem 2017; 64:686-699. [DOI: 10.1002/bab.1525] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 07/03/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Juan Dong
- State Key Laboratory of Food Science & Technology; Jiangnan University; Wuxi Jiangsu People's Republic of China
- College of Food Science and Engineering; Shihezi University; Shihezi Xinjiang People's Republic of China
| | - Mohammed A. A. Gasmalla
- School of Food Science and Technology; Jiangnan University; Wuxi Jiangsu People's Republic of China
| | - Wei Zhao
- State Key Laboratory of Food Science & Technology; Jiangnan University; Wuxi Jiangsu People's Republic of China
- School of Food Science and Technology; Jiangnan University; Wuxi Jiangsu People's Republic of China
| | - Jingtao Sun
- College of Food Science and Engineering; Shihezi University; Shihezi Xinjiang People's Republic of China
| | - Wenyu Liu
- Xinjiang Shihezi Vocational Technical College; Shihezi Xinjiang People's Republic of China
| | - Mingming Wang
- School of Food Science and Technology; Jiangnan University; Wuxi Jiangsu People's Republic of China
| | - Liang Han
- School of Food Science and Technology; Jiangnan University; Wuxi Jiangsu People's Republic of China
| | - Ruijin Yang
- State Key Laboratory of Food Science & Technology; Jiangnan University; Wuxi Jiangsu People's Republic of China
- School of Food Science and Technology; Jiangnan University; Wuxi Jiangsu People's Republic of China
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24
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Chen CC, Chi Z, Liu GL, Jiang H, Hu Z, Chi ZM. Production, purification, characterization and gene cloning of an esterase produced by Aureobasidium melanogenum HN6.2. Process Biochem 2017. [DOI: 10.1016/j.procbio.2016.12.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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25
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Nguyen TH, Nguyen VD. Characterization and Applications of Marine Microbial Enzymes in Biotechnology and Probiotics for Animal Health. ADVANCES IN FOOD AND NUTRITION RESEARCH 2017; 80:37-74. [PMID: 28215328 DOI: 10.1016/bs.afnr.2016.11.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Marine microorganisms have been recognized as potential sources of novel enzymes because they are relatively more stable than the corresponding enzymes derived from plants and animals. Enzymes from marine microorganisms also differ from homologous enzymes in terrestrial microorganisms based on salinity, pressure, temperature, and lighting conditions. Marine microbial enzymes can be used in diverse industrial applications. This chapter will focus on the biotechnological applications of marine enzymes and also their use as a tool of marine probiotics to improve host digestion (food digestion, food absorption, and mucus utilization) and cleave molecular signals involved in quorum sensing in pathogens to control disease in aquaculture.
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Affiliation(s)
- T H Nguyen
- Faculty of Food Technology, Nha Trang University, Nha Trang, Vietnam.
| | - V D Nguyen
- Institute of Biotechnology and Environment, Nha Trang University, Nha Trang, Vietnam.
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26
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Hong DK, Jang SH, Lee C. Gene cloning and characterization of a psychrophilic phthalate esterase with organic solvent tolerance from an Arctic bacterium Sphingomonas glacialis PAMC 26605. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2017.02.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Santiago M, Ramírez-Sarmiento CA, Zamora RA, Parra LP. Discovery, Molecular Mechanisms, and Industrial Applications of Cold-Active Enzymes. Front Microbiol 2016; 7:1408. [PMID: 27667987 PMCID: PMC5016527 DOI: 10.3389/fmicb.2016.01408] [Citation(s) in RCA: 141] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Accepted: 08/25/2016] [Indexed: 11/17/2022] Open
Abstract
Cold-active enzymes constitute an attractive resource for biotechnological applications. Their high catalytic activity at temperatures below 25°C makes them excellent biocatalysts that eliminate the need of heating processes hampering the quality, sustainability, and cost-effectiveness of industrial production. Here we provide a review of the isolation and characterization of novel cold-active enzymes from microorganisms inhabiting different environments, including a revision of the latest techniques that have been used for accomplishing these paramount tasks. We address the progress made in the overexpression and purification of cold-adapted enzymes, the evolutionary and molecular basis of their high activity at low temperatures and the experimental and computational techniques used for their identification, along with protein engineering endeavors based on these observations to improve some of the properties of cold-adapted enzymes to better suit specific applications. We finally focus on examples of the evaluation of their potential use as biocatalysts under conditions that reproduce the challenges imposed by the use of solvents and additives in industrial processes and of the successful use of cold-adapted enzymes in biotechnological and industrial applications.
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Affiliation(s)
- Margarita Santiago
- Department of Chemical Engineering and Biotechnology, Centre for Biochemical Engineering and Biotechnology, Universidad de ChileSantiago, Chile
| | - César A. Ramírez-Sarmiento
- Schools of Engineering, Medicine and Biological Sciences, Institute for Biological and Medical Engineering, Pontificia Universidad Católica de ChileSantiago, Chile
| | - Ricardo A. Zamora
- Departamento de Biología, Facultad de Ciencias, Universidad de ChileSantiago, Chile
| | - Loreto P. Parra
- Schools of Engineering, Medicine and Biological Sciences, Institute for Biological and Medical Engineering, Pontificia Universidad Católica de ChileSantiago, Chile
- Department of Chemical and Bioprocesses Engineering, School of Engineering, Pontificia Universidad Católica de ChileSantiago, Chile
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A novel cold-adapted and highly salt-tolerant esterase from Alkalibacterium sp. SL3 from the sediment of a soda lake. Sci Rep 2016; 6:19494. [PMID: 26915906 PMCID: PMC4768246 DOI: 10.1038/srep19494] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 12/14/2015] [Indexed: 01/26/2023] Open
Abstract
A novel esterase gene (estSL3) was cloned from the Alkalibacterium sp. SL3, which was isolated from the sediment of soda lake Dabusu. The 636-bp full-length gene encodes a polypeptide of 211 amino acid residues that is closely related with putative GDSL family lipases from Alkalibacterium and Enterococcus. The gene was successfully expressed in E. coli, and the recombinant protein (rEstSL3) was purified to electrophoretic homogeneity and characterized. rEstSL3 exhibited the highest activity towards pNP-acetate and had no activity towards pNP-esters with acyl chains longer than C8. The enzyme was highly cold-adapted, showing an apparent temperature optimum of 30 °C and remaining approximately 70% of the activity at 0 °C. It was active and stable over the pH range from 7 to 10, and highly salt-tolerant up to 5 M NaCl. Moreover, rEstSL3 was strongly resistant to most tested metal ions, chemical reagents, detergents and organic solvents. Amino acid composition analysis indicated that EstSL3 had fewer proline residues, hydrogen bonds and salt bridges than mesophilic and thermophilic counterparts, but more acidic amino acids and less hydrophobic amino acids when compared with other salt-tolerant esterases. The cold active, salt-tolerant and chemical-resistant properties make it a promising enzyme for basic research and industrial applications.
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Jiang H, Zhang S, Gao H, Hu N. Characterization of a cold-active esterase from Serratia sp. and improvement of thermostability by directed evolution. BMC Biotechnol 2016; 16:7. [PMID: 26800680 PMCID: PMC4722774 DOI: 10.1186/s12896-016-0235-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Accepted: 01/13/2016] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND In recent years, cold-active esterases have received increased attention due to their attractive properties for some industrial applications such as high catalytic activity at low temperatures. RESULTS An esterase-encoding gene (estS, 909 bp) from Serratia sp. was identified, cloned and expressed in Escherichia coli DE3 (BL21). The estS encoded a protein (EstS) of 302 amino acids with a predicted molecular weight of 32.5 kDa. It showed the highest activity at 10 °C and pH 8.5. EstS was cold active and retained ~92 % of its original activity at 0 °C. Thermal inactivation analysis showed that the T1/2 value of EstS was 50 min at 50 °C (residual activity 41.23 %) after 1 h incubation. EstS is also quite stable in high salt conditions and displayed better catalytic activity in the presence of 4 M NaCl. To improve the thermo-stability of EstS, variants of estS gene were created by error-prone PCR. A mutant 1-D5 (A43V, R116W, D147N) that showed higher thermo-stability than its wild type predecessor was selected. 1-D5 showed enhanced T1/2 of 70 min at 50 °C and retained 63.29 % of activity after incubation at 50 °C for 60 min, which were about 22 % higher than the wild type (WT). CD spectrum showed that the secondary structure of WT and 1-D5 are more or less similar, but an increase in β-sheets was recorded, which enhanced the thermostability of mutant protein. CONCLUSION EstS was a novel cold-active and salt-tolerant esterase and half-life of mutant 1-D5 was enhanced by 1.4 times compared with WT. The features of EstS are interesting and can be exploited for commercial applications. The results have also provided useful information about the structure and function of Est protein.
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Affiliation(s)
- Huang Jiang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211800, P. R. China.
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, P. R. China.
| | - Shaowei Zhang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211800, P. R. China.
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, P. R. China.
| | - Haofeng Gao
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211800, P. R. China.
| | - Nan Hu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211800, P. R. China.
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30
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Wang Y, Yu W, Han F. Expression and characterization of a cold-adapted, thermotolerant and denaturant-stable GH5 endoglucanase Celal_2753 that withstands boiling from the psychrophilic bacterium Cellulophaga algicola IC166(T). Biotechnol Lett 2015; 38:285-90. [PMID: 26463370 DOI: 10.1007/s10529-015-1971-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 09/30/2015] [Indexed: 10/23/2022]
Abstract
OBJECTIVES To characterize a novel endoglucanase, Celal_2753, from the psychrophilic bacterium Cellulophaga algicola IC166(T). RESULTS Celal_2753 was purified to homogeneity with a yield of 81 % and with a molecular weight of 40 kDa on SDS-PAGE. It had maximum hydrolytic activity towards carboxymethyl cellulose at 40 °C and pH 6. It showed 33 % of the maximum activity at 10 ºC. Its activity increased to 272-316 % in the presence of 0.25-2 M NaCl and KCl at 40 °C. Celal_2753 was stable in the presence of 10 % (v/v) Tween 20, 10 % (v/v) Triton X-100, 16 mM SDS, 6 M urea or 2 M guanidine hydrochloride. Celal_2753 that had been boiled for 5 min recovered 55 % of its initial activity by incubating at 30 °C for 60 min. CONCLUSION Because of its cold-adapted, thermotolerant and denaturant-stable properties, endoglucanase Celal_2753 is promising in detergent industry and bioethanol production.
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Affiliation(s)
- Ying Wang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, 5 Yushan Road, Qingdao, 266003, China.,Shandong Provincial Key Laboratory of Glycoscience & Glycotechnology, 5 Yushan Road, Qingdao, 266003, China.,School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
| | - Wengong Yu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, 5 Yushan Road, Qingdao, 266003, China.,Shandong Provincial Key Laboratory of Glycoscience & Glycotechnology, 5 Yushan Road, Qingdao, 266003, China.,School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
| | - Feng Han
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, 5 Yushan Road, Qingdao, 266003, China. .,Shandong Provincial Key Laboratory of Glycoscience & Glycotechnology, 5 Yushan Road, Qingdao, 266003, China. .,School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China.
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