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Esteban-Torres M, Mancheño JM, de las Rivas B, Muñoz R. Characterization of a cold-active esterase from Lactobacillus plantarum suitable for food fermentations. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:5126-5132. [PMID: 24856291 DOI: 10.1021/jf501493z] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Lactobacillus plantarum is a lactic acid bacteria that can be found in numerous fermented foods. Esterases from L. plantarum exert a fundamental role in food aroma. In the present study, the gene lp_2631 encoding a putative esterase was cloned and expressed in Escherichia coli BL21 (DE3) and the overproduced Lp_2631 protein has been biochemically characterized. Lp_2631 exhibited optimal esterase activity at 20 °C and more than 90% of maximal activity at 5 °C, being the first cold-active esterase described in a lactic acid bacteria. Lp_2631 exhibited 40% of its maximal activity after 2 h of incubation at 65 °C. Lp_2631 also showed marked activity in the presence of compounds commonly found in food fermentations, such as NaCl, ethanol, or lactic acid. The results suggest that Lp_2631 might be a useful esterase to be used in food fermentations.
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Affiliation(s)
- María Esteban-Torres
- Laboratorio de Biotecnología Bacteriana, Instituto de Ciencia y Tecnología de Alimentos y Nutrición (ICTAN), Consejo Superior de Investigaciones Científicas (CSIC) , Juan de la Cierva 3, 28006 Madrid, Spain
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Zhang S, Wu G, Liu Z, Shao Z, Liu Z. Characterization of EstB, a novel cold-active and organic solvent-tolerant esterase from marine microorganism Alcanivorax dieselolei B-5(T). Extremophiles 2013; 18:251-9. [PMID: 24318107 DOI: 10.1007/s00792-013-0612-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Accepted: 11/21/2013] [Indexed: 10/25/2022]
Abstract
A novel esterase gene, estB, was cloned from the marine microorganism Alcanivorax dieselolei B-5(T) and overexpressed in E. coli DE3 (BL21). The expressed protein EstB with a predicted molecular weight of 45.1 kDa had a distinct catalytic triad (Ser(211)-Trp(353)-Gln(385)) and the classical consensus motif conserved in most lipases and esterases Gly(209)-X-Ser(211)-X-Gly(213). EstB showed very low similarity to any known proteins and displayed the highest similarity to the hypothetical protein (46%) from Rhodococcus jostii RHA1. EstB showed the optimal activity around pH 8.5 and 20 °C and was identified to be extremely cold-adaptative retaining more than 95% activity between 0 and 10 °C. The values of kinetic parameters on p-NP caproate (K m, K cat and K cat/K m) were 0.15 mM, 0.54 × 10(3) s(-1) and 3.6 × 10(3) s(-1) mM(-1), respectively. In addition, EstB showed remarkable stability in several studied organic solvents and detergents of high concentrations with the retention of more than 70% activity after treatment for 30 min. The cold activity and its tolerance towards organic solvents made it a promising biocatalyst for industrial applications under extreme conditions.
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Affiliation(s)
- Shanshan Zhang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
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Mohamed YM, Ghazy MA, Sayed A, Ouf A, El-Dorry H, Siam R. Isolation and characterization of a heavy metal-resistant, thermophilic esterase from a Red Sea brine pool. Sci Rep 2013; 3:3358. [PMID: 24285146 PMCID: PMC6506439 DOI: 10.1038/srep03358] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Accepted: 11/07/2013] [Indexed: 11/09/2022] Open
Abstract
The Red Sea Atlantis II brine pool is an extreme environment that displays multiple harsh conditions such as high temperature, high salinity and high concentrations of multiple, toxic heavy metals. The survival of microbes in such an environment by utilizing resistant enzymes makes them an excellent source of extremophilic enzymes. We constructed a fosmid metagenomic library using DNA isolated from the deepest and most secluded layer of this pool. We report the isolation and biochemical characterization of an unusual esterase: EstATII. EstATII is thermophilic (optimum temperature, 65°C), halotolerant (maintains its activity in up to 4.5 M NaCl) and maintains at least 60% of its activity in the presence of a wide spectrum of heavy metals. The combination of biochemical characteristics of the Red Sea Atlantis II brine pool esterase, i.e., halotolerance, thermophilicity and resistance to heavy metals, makes it a potentially useful biocatalyst.
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Affiliation(s)
- Yasmine M Mohamed
- 1] Biology Department, American University in Cairo, Cairo, Egypt [2] YJ-The Science and Technology Research Center, American University in Cairo, Cairo, Egypt
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Lenfant N, Hotelier T, Velluet E, Bourne Y, Marchot P, Chatonnet A. ESTHER, the database of the α/β-hydrolase fold superfamily of proteins: tools to explore diversity of functions. Nucleic Acids Res 2012. [PMID: 23193256 PMCID: PMC3531081 DOI: 10.1093/nar/gks1154] [Citation(s) in RCA: 198] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The ESTHER database, which is freely available via a web server (http://bioweb.ensam.inra.fr/esther) and is widely used, is dedicated to proteins with an α/β-hydrolase fold, and it currently contains >30 000 manually curated proteins. Herein, we report those substantial changes towards improvement that we have made to improve ESTHER during the past 8 years since our 2004 update. In particular, we generated 87 new families and increased the coverage of the UniProt Knowledgebase (UniProtKB). We also renewed the ESTHER website and added new visualization tools, such as the Overall Table and the Family Tree. We also address two topics of particular interest to the ESTHER users. First, we explain how the different enzyme classifications (bacterial lipases, peptidases, carboxylesterases) used by different communities of users are combined in ESTHER. Second, we discuss how variations of core architecture or in predicted active site residues result in a more precise clustering of families, and whether this strategy provides trustable hints to identify enzyme-like proteins with no catalytic activity.
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Affiliation(s)
- Nicolas Lenfant
- Dynamique Musculaire et Métabolisme, INRA-UM1, Place Viala, 34060 Montpellier, France
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Chow J, Kovacic F, Dall Antonia Y, Krauss U, Fersini F, Schmeisser C, Lauinger B, Bongen P, Pietruszka J, Schmidt M, Menyes I, Bornscheuer UT, Eckstein M, Thum O, Liese A, Mueller-Dieckmann J, Jaeger KE, Streit WR. The metagenome-derived enzymes LipS and LipT increase the diversity of known lipases. PLoS One 2012; 7:e47665. [PMID: 23112831 PMCID: PMC3480424 DOI: 10.1371/journal.pone.0047665] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Accepted: 09/13/2012] [Indexed: 11/18/2022] Open
Abstract
Triacylglycerol lipases (EC 3.1.1.3) catalyze both hydrolysis and synthesis reactions with a broad spectrum of substrates rendering them especially suitable for many biotechnological applications. Most lipases used today originate from mesophilic organisms and are susceptible to thermal denaturation whereas only few possess high thermotolerance. Here, we report on the identification and characterization of two novel thermostable bacterial lipases identified by functional metagenomic screenings. Metagenomic libraries were constructed from enrichment cultures maintained at 65 to 75 °C and screened resulting in the identification of initially 10 clones with lipolytic activities. Subsequently, two ORFs were identified encoding lipases, LipS and LipT. Comparative sequence analyses suggested that both enzymes are members of novel lipase families. LipS is a 30.2 kDa protein and revealed a half-life of 48 h at 70 °C. The lipT gene encoded for a multimeric enzyme with a half-life of 3 h at 70 °C. LipS had an optimum temperature at 70 °C and LipT at 75 °C. Both enzymes catalyzed hydrolysis of long-chain (C(12) and C(14)) fatty acid esters and additionally hydrolyzed a number of industry-relevant substrates. LipS was highly specific for (R)-ibuprofen-phenyl ester with an enantiomeric excess (ee) of 99%. Furthermore, LipS was able to synthesize 1-propyl laurate and 1-tetradecyl myristate at 70 °C with rates similar to those of the lipase CalB from Candida antarctica. LipS represents the first example of a thermostable metagenome-derived lipase with significant synthesis activities. Its X-ray structure was solved with a resolution of 1.99 Å revealing an unusually compact lid structure.
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Affiliation(s)
- Jennifer Chow
- Department of Microbiology and Biotechnology, Biocenter Klein Flottbek, University of Hamburg, Hamburg, Germany
| | - Filip Kovacic
- Institute of Molecular Enzyme Technology, Heinrich Heine University Duesseldorf, Research Center Juelich, Juelich, Germany
| | - Yuliya Dall Antonia
- European Molecular Biology Laboratory (EMBL) Hamburg Outstation, c/o Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - Ulrich Krauss
- Institute of Molecular Enzyme Technology, Heinrich Heine University Duesseldorf, Research Center Juelich, Juelich, Germany
| | - Francesco Fersini
- European Molecular Biology Laboratory (EMBL) Hamburg Outstation, c/o Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - Christel Schmeisser
- Department of Microbiology and Biotechnology, Biocenter Klein Flottbek, University of Hamburg, Hamburg, Germany
| | - Benjamin Lauinger
- Institute of Bioorganic Chemistry, Heinrich Heine University Duesseldorf, Research Center Juelich, Juelich, Germany
| | - Patrick Bongen
- Institute of Bioorganic Chemistry, Heinrich Heine University Duesseldorf, Research Center Juelich, Juelich, Germany
| | - Joerg Pietruszka
- Institute of Bioorganic Chemistry, Heinrich Heine University Duesseldorf, Research Center Juelich, Juelich, Germany
| | - Marlen Schmidt
- Department of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, Greifswald University, Greifswald, Germany
| | - Ina Menyes
- Department of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, Greifswald University, Greifswald, Germany
| | - Uwe T. Bornscheuer
- Department of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, Greifswald University, Greifswald, Germany
| | - Marrit Eckstein
- Bioprocess Development Consumer Specialties and Biocatalysis Biotechnology, Evonik Industries AG, Essen, Germany
| | - Oliver Thum
- Bioprocess Development Consumer Specialties and Biocatalysis Biotechnology, Evonik Industries AG, Essen, Germany
| | - Andreas Liese
- Institute of Technical Biocatalysis, Hamburg University of Technology, Hamburg, Germany
| | - Jochen Mueller-Dieckmann
- European Molecular Biology Laboratory (EMBL) Hamburg Outstation, c/o Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - Karl-Erich Jaeger
- Institute of Molecular Enzyme Technology, Heinrich Heine University Duesseldorf, Research Center Juelich, Juelich, Germany
| | - Wolfgang R. Streit
- Department of Microbiology and Biotechnology, Biocenter Klein Flottbek, University of Hamburg, Hamburg, Germany
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