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de Melo VS, de Melo RR, Rade LL, Miyamoto RY, Milan N, de Souza CM, de Oliveira VM, Simões IT, de Lima EA, Guilherme EPX, Pinheiro GMS, Inacio Ramos CH, Persinoti GF, Generoso WC, Zanphorlin LM. Thermoascus aurantiacus harbors an esterase/lipase that is highly activated by anionic surfactant. Biochem Biophys Res Commun 2024; 733:150572. [PMID: 39191187 DOI: 10.1016/j.bbrc.2024.150572] [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: 06/02/2024] [Revised: 08/06/2024] [Accepted: 08/19/2024] [Indexed: 08/29/2024]
Abstract
Fungal lipolytic enzymes play crucial roles in various lipid bio-industry processes. Here, we elucidated the biochemical and structural characteristics of an unexplored fungal lipolytic enzyme (TaLip) from Thermoascus aurantiacus var. levisporus, a strain renowned for its significant industrial relevance in carbohydrate-active enzyme production. TaLip belongs to a poorly understood phylogenetic branch within the class 3 lipase family and prefers to hydrolyze mainly short-chain esters. Nonetheless, it also displays activity against natural long-chain triacylglycerols. Furthermore, our analyses revealed that the surfactant sodium dodecyl sulfate (SDS) enhances the hydrolytic activity of TaLip on pNP butyrate by up to 5.0-fold. Biophysical studies suggest that interactions with SDS may prevent TaLip aggregation, thereby preserving the integrity and stability of its monomeric form and improving its performance. These findings highlight the resilience of TaLip as a lipolytic enzyme capable of functioning in tandem with surfactants, offering an intriguing enzymatic model for further exploration of surfactant tolerance and activation in biotechnological applications.
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Affiliation(s)
- Vandierly Sampaio de Melo
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil; Faculty of Food Engineering, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Ricardo Rodrigues de Melo
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil
| | - Letícia Leandro Rade
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil
| | - Renan Yuji Miyamoto
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil
| | - Natalia Milan
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil; Faculty of Food Engineering, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Claudia Maria de Souza
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil
| | - Vinicius Martins de Oliveira
- Brazilian Biosciences National Laboratory (LNBIO), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil
| | - Isabelle Taira Simões
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil; Faculty of Pharmaceutical Sciences, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Evandro Antonio de Lima
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil
| | - Ederson Paulo Xavier Guilherme
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil
| | | | | | - Gabriela Felix Persinoti
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil
| | - Wesley Cardoso Generoso
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil
| | - Leticia Maria Zanphorlin
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil.
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2
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Shingarova LN, Petrovskaya LE, Kryukova EA, Gapizov SS, Dolgikh DA, Kirpichnikov MP. Display of Oligo-α-1,6-Glycosidase from Exiguobacterium sibiricum on the Surface of Escherichia coli Cells. BIOCHEMISTRY. BIOKHIMIIA 2023; 88:716-722. [PMID: 37331717 DOI: 10.1134/s0006297923050140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/03/2023] [Accepted: 04/04/2023] [Indexed: 06/20/2023]
Abstract
Cell-surface display using anchor motifs of outer membrane proteins allows exposure of target peptides and proteins on the surface of microbial cells. Previously, we obtained and characterized highly catalytically active recombinant oligo-α-1,6-glycosidase from the psychrotrophic bacterium Exiguobacterium sibiricum (EsOgl). It was also shown that the autotransporter AT877 from Psychrobacter cryohalolentis and its deletion variants efficiently displayed type III fibronectin (10Fn3) domain 10 on the surface of Escherichia coli cells. The aim of the work was to obtain an AT877-based system for displaying EsOgl on the surface of bacterial cells. The genes for the hybrid autotransporter EsOgl877 and its deletion mutants EsOgl877Δ239 and EsOgl877Δ310 were constructed, and the enzymatic activity of EsOgl877 was investigated. Cells expressing this protein retained ~90% of the enzyme maximum activity within a temperature range of 15-35°C. The activity of cells expressing EsOgl877Δ239 and EsOgl877Δ310 was 2.7 and 2.4 times higher, respectively, than of the cells expressing the full-size AT. Treatment of cells expressing EsOgl877 deletion variants with proteinase K showed that the passenger domain localized to the cell surface. These results can be used for further optimization of display systems expressing oligo-α-1,6-glycosidase and other heterologous proteins on the surface of E. coli cells.
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Affiliation(s)
- Lyudmila N Shingarova
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia.
| | - Lada E Petrovskaya
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
| | - Elena A Kryukova
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
| | - Sultan S Gapizov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Dmitry A Dolgikh
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Mikhail P Kirpichnikov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
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3
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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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4
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Shingarova LN, Petrovskaya LE, Kryukova EA, Gapizov SS, Boldyreva EF, Dolgikh DA, Kirpichnikov MP. Deletion Variants of Autotransporter from Psychrobacter cryohalolentis Increase Efficiency of 10FN3 Exposure on the Surface of Escherichia coli Cells. BIOCHEMISTRY. BIOKHIMIIA 2022; 87:932-939. [PMID: 36180989 DOI: 10.1134/s0006297922090061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/11/2022] [Accepted: 07/11/2022] [Indexed: 06/16/2023]
Abstract
The autotransporter AT877 from Psychrobacter cryohalolentis belongs to the family of outer membrane proteins containing N-terminal passenger and C-terminal translocator domains that form the basis for the design of display systems on the surface of bacterial cells. It was shown in our previous study that the passenger domain of AT877 can be replaced by the cold-active esterase EstPc or the tenth domain of fibronectin type III (10Fn3). In order to increase efficiency of the 10Fn3 surface display in Escherichia coli cells, four deletion variants of the Fn877 hybrid autotransporter were obtained. It was demonstrated that all variants are present in the membrane of bacterial cells and facilitate binding of the antibodies specific against 10Fn3 on the cell surface. The highest level of binding is provided by the variants Δ239 and Δ310, containing four and seven beta-strands out of twelve that comprise the structure of the translocator domain. Using electrophoresis under semi-native conditions, presence of heat modifiability in the full-size Fn877 and its deletion variants was demonstrated, which indicated preservation of beta structure in their molecules. The obtained results could be used to optimize the bacterial display systems of 10Fn3, as well as of other heterologous passenger domains.
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Affiliation(s)
- Lyudmila N Shingarova
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia.
| | - Lada E Petrovskaya
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
| | - Elena A Kryukova
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
| | - Sultan S Gapizov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Elena F Boldyreva
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
| | - Dmitriy A Dolgikh
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Mikhail P Kirpichnikov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
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5
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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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Esakkiraj P, Bharathi C, Ayyanna R, Jha N, Panigrahi A, Karthe P, Arul V. Functional and molecular characterization of a cold-active lipase from Psychrobacter celer PU3 with potential a*ntibiofilm property. Int J Biol Macromol 2022; 211:741-753. [PMID: 35504418 DOI: 10.1016/j.ijbiomac.2022.04.174] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 04/07/2022] [Accepted: 04/24/2022] [Indexed: 11/05/2022]
Abstract
The lipase gene from Psychrobacter celer PU3 was cloned into pET-28a(+) expression vector and overexpressed in E. coli BL21 (DE3) pLysS cells. The purified Psychrobacter celer lipase (PCL) was characterized as an alkaline active enzyme and has a molecular mass of around 30 kDa. The PCL was active even at a low temperature and the optimum range was observed between 10 and 40 °C temperatures. MALDI-TOF and phylogenetic analysis ensued that Psychrobacter celer PU3 lipase (PCL) was closely related to P. aureginosa lipase (PAL). MD simulation results suggests that temperature change did not affect overall structure of PCL, but it may alter temperature- dependent PCL structural changes. R1 (129-135 AA) and R2 (187-191 AA) regions could be important for temperature-dependent PCL function as they fluctuate much at 35 °C temperature. PMSF completely inhibited PCL lipase activity and it demonstrates the presence of serine residues in the active site of PCL. PCL is moderately halophilic and most of the tested organic solvents found to be inhibiting the lipase activity except the solvents ethanol and methanol. PCL activity was increased with surfactants (SDS and CTAB) and bleaching agents (hydrogen peroxide). The effect of different metal ions on PCL resulted that only mercuric chloride was found as the enhancer of the lipase activity. Antibiofilm property of PCL was evaluated against pathogenic Vibrio parahaemolyticus isolated from the diseased shrimp and MIC value was 500 U. PCL significantly altered the morphology and biofilm density of V. parahaemolyticus and the same was observed through scanning electron microscope (SEM) and confocal laser scanning microscope (CLSM) imaging. RT-PCR analysis revealed that the mRNA expression level of biofilm, colony morphology and major toxin-related (aphA, luxS, opaR, tolC, toxR) genes of V. parahaemolyticus were significantly downregulated with PCL treatment.
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Affiliation(s)
- Palanichamy Esakkiraj
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry 605014, India; Crustacean Culture Division, ICAR-Central Institute of Brackishwater Aquaculture, 75, Santhome High Road, R. A. Puram, Chennai 600 028, India
| | - Christian Bharathi
- CAS in Crystallography and Biophysics, University of Madras, Chennai 600025, India
| | - Repally Ayyanna
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry 605014, India
| | - Natwar Jha
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry 605014, India
| | - Akshaya Panigrahi
- Crustacean Culture Division, ICAR-Central Institute of Brackishwater Aquaculture, 75, Santhome High Road, R. A. Puram, Chennai 600 028, India
| | - Ponnuraj Karthe
- CAS in Crystallography and Biophysics, University of Madras, Chennai 600025, India
| | - Venkatesan Arul
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry 605014, India.
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Zong W, Su W, Xie Q, Gu Q, Deng X, Ren Y, Li H. Expression, characterization, and immobilization of a novel SGNH esterase Est882 and its potential for pyrethroid degradation. Front Microbiol 2022; 13:1069754. [PMID: 36620037 PMCID: PMC9810817 DOI: 10.3389/fmicb.2022.1069754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 11/25/2022] [Indexed: 12/24/2022] Open
Abstract
The widely-used pyrethroid pesticides have attracted public attention because of their potentials to cause environmental pollution and toxic effects on non-target organisms. Esterase is a kind of hydrolytic enzyme that can catalyze the cleavage or formation of ester bonds. it plays a pivotal role in the decomposition of pyrethroids and esters containing industrial pollutants through the hydrolysis of ester bonds. Here, a new esterase gene est882 was successfully screened, which encodes Est882, a SGNH family esterase composed of 294 amino acids. It was heterogeneously expressed, identified and immobilized. Multiple sequence alignment showed that Est882 had a typical GDS(X) conserved motif and a catalytic triad composed of Ser79, Asp269 and His275. Phylogenetic analysis showed that Est882 shall belong to a new esterase family. Biochemical characterization demonstrated that the optimum condition was 40°C and pH 9.0. Est882 immobilization was studied with mesoporous silica SBA-15 as the carrier and found to significantly improve the tolerance and stability of Est882. Its optimum pH increased to 10.0 and stabilized within pH 8.0-11.0. Free Est882 can effectively degrade various pyrethroids within 30 min, with a degradation rate above 80%. The immobilized Est882 yet degraded more than 70% of pyrethroids within 30 min. The present study indicated that Est882 has outstanding potential in bioremediation of a pyrethroid-polluted environment. These characteristics endow Est882 with potential values in various industrial applications and hydrolysis of pyrethroid residues.
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Affiliation(s)
- Wei Zong
- Key Specialty of Clinical Pharmacy, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China
- Guangdong Key Laboratory of Bioactive Drug Research, College of Life Sciences and Biopharmaceuticals, Guangdong Pharmaceutical University, Guangzhou, China
| | - Wenfeng Su
- Key Specialty of Clinical Pharmacy, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China
- Guangdong Key Laboratory of Bioactive Drug Research, College of Life Sciences and Biopharmaceuticals, Guangdong Pharmaceutical University, Guangzhou, China
| | - Qingfen Xie
- Key Specialty of Clinical Pharmacy, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China
- Guangdong Key Laboratory of Bioactive Drug Research, College of Life Sciences and Biopharmaceuticals, Guangdong Pharmaceutical University, Guangzhou, China
| | - Quliang Gu
- Key Specialty of Clinical Pharmacy, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China
- Guangdong Key Laboratory of Bioactive Drug Research, College of Life Sciences and Biopharmaceuticals, Guangdong Pharmaceutical University, Guangzhou, China
| | - Xinyi Deng
- Key Specialty of Clinical Pharmacy, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China
- Guangdong Key Laboratory of Bioactive Drug Research, College of Life Sciences and Biopharmaceuticals, Guangdong Pharmaceutical University, Guangzhou, China
| | - Yifei Ren
- Guangzhou Hua shuo Biotechnology Co. Ltd., Guangzhou, China
- *Correspondence: Yifei Ren,
| | - He Li
- Key Specialty of Clinical Pharmacy, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China
- Guangdong Key Laboratory of Bioactive Drug Research, College of Life Sciences and Biopharmaceuticals, Guangdong Pharmaceutical University, Guangzhou, China
- He Li,
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Knepp ZJ, Ghaner A, Root KT. Purification and refolding protocol for cold-active recombinant esterase AaSGNH1 from Aphanizomenon flos-aquae expressed as insoluble inclusion bodies. Prep Biochem Biotechnol 2021; 52:394-403. [PMID: 34355672 DOI: 10.1080/10826068.2021.1952601] [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] [Indexed: 02/06/2023]
Abstract
Microbial esterases are a highly desirable tool for numerous biosynthetic and biotechnological applications requiring ester bond cleavage. Once identified, microbial esterases are often produced recombinantly in Escherichia coli to enhance yield and ease of purification. In this study a polyhistidine-tagged SGNH esterase gene (AaSGNH1), originating from the cyanobacterium Aphanizomenon flos-aquae, was cloned into an over-expression plasmid and expressed in BL21(DE3) cells. The recombinant esterase enzyme was produced as inactive inclusion bodies which were insoluble in 8 M urea but readily solubilized by the detergent Empigen BB®. Crucially, the procurement of active enzyme required controlled removal of detergent during column chromatography and dialysis steps. The refolded esterase was characterized with respect to its ability to catalyze the cleavage of p-nitrophenol esters of different chain lengths (C2, C8, C16). In addition, the temperature and pH optima were determined and it was found that the enzyme was most active at low temperatures (5-15 °C) and under alkaline conditions (pH 8-10). It was found that the kinetic properties of AaSGNH1 were remarkably similar to other SGNH esterases described thereby validating that the protein was effectively refolded. Overall, this study provides a simple strategy for isolating cold-active recombinant esterase enzyme when expressed as inclusion bodies.
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Affiliation(s)
- Zachary J Knepp
- Department of Chemistry, Lock Haven University, Lock Haven, PA, USA
| | - Ashlea Ghaner
- Department of Chemistry, Lock Haven University, Lock Haven, PA, USA
| | - Kyle T Root
- Department of Chemistry, Lock Haven University, Lock Haven, PA, USA
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Bhardwaj KK, Kishen S, Mehta A, Sharma A, Gupta R. Purification of high molecular weight thermotolerant esterase from Serratia sp. and its characterization. 3 Biotech 2021; 11:308. [PMID: 34194900 DOI: 10.1007/s13205-021-02852-2] [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: 02/21/2021] [Accepted: 05/19/2021] [Indexed: 01/06/2023] Open
Abstract
In the present study, an extracellular esterase from Serratia sp. was purified 24.46 fold using an initial ammonium sulphate precipitation step (optimized concentration of 30-40%), followed by Diethylaminoethyl cellulose (DEAE-cellulose) chromatography and size exclusion Sephadex G-200 column chromatography steps. The molecular weight of the esterase using native polyacrylamide gel electrophoresis (PAGE) was determined to be 236 kDa and by using sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE) was found to be 60 kDa suggesting that the enzyme was a tetramer of 4 subunits. The purified esterase was able to catalyze the hydrolysis of p-nitrophenyl esters, especially p-nitrophenyl acetate. Maximum esterase activity was achieved in 0.15 M Tris-HCl buffer of pH 8.5 at 50 °C after 10 min. The enzyme was stable for at least 8 h at 4 and 35 °C but the half-life was determined to be 4.5 h at 50 °C and 3 h at 60 °C. The esterase activity was inhibited by detergents (1 mM) (Triton X-100, Tween 60, Tween 80, ethylenediamine tetraacetic acid and SDS) except Tween 20. The esterase activity was inhibited by organic solvents (1 mM) such as ethanol, methanol, acetone, acetonitrile and was stable in the presence of glycerol, isopropanol but the organic solvent dimethyl sulfoxide (DMSO) significantly (p < 0.05) enhanced esterase activity. The matrix-assisted laser desorption ionization-time of flight mass spectrometry showed that the enzyme exhibited similarity with the pimeloyl-[acyl carrier protein] methyl ester esterase of Serratia marcescens.
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Boyko KM, Kryukova MV, Petrovskaya LE, Kryukova EA, Nikolaeva AY, Korzhenevsky DA, Lomakina GY, Novototskaya-Vlasova KA, Rivkina EM, Dolgikh DA, Kirpichnikov MP, Popov VO. Structural and Biochemical Characterization of a Cold-Active PMGL3 Esterase with Unusual Oligomeric Structure. Biomolecules 2021; 11:biom11010057. [PMID: 33466452 PMCID: PMC7824956 DOI: 10.3390/biom11010057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/30/2020] [Accepted: 01/03/2021] [Indexed: 11/23/2022] Open
Abstract
The gene coding for a novel cold-active esterase PMGL3 was previously obtained from a Siberian permafrost metagenomic DNA library and expressed in Escherichia coli. We elucidated the 3D structure of the enzyme which belongs to the hormone-sensitive lipase (HSL) family. Similar to other bacterial HSLs, PMGL3 shares a canonical α/β hydrolase fold and is presumably a dimer in solution but, in addition to the dimer, it forms a tetrameric structure in a crystal and upon prolonged incubation at 4 °C. Detailed analysis demonstrated that the crystal tetramer of PMGL3 has a unique architecture compared to other known tetramers of the bacterial HSLs. To study the role of the specific residues comprising the tetramerization interface of PMGL3, several mutant variants were constructed. Size exclusion chromatography (SEC) analysis of D7N, E47Q, and K67A mutants demonstrated that they still contained a portion of tetrameric form after heat treatment, although its amount was significantly lower in D7N and K67A compared to the wild type. Moreover, the D7N and K67A mutants demonstrated a 40 and 60% increase in the half-life at 40 °C in comparison with the wild type protein. Km values of these mutants were similar to that of the wt PMGL3. However, the catalytic constants of the E47Q and K67A mutants were reduced by ~40%.
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Affiliation(s)
- Konstantin M. Boyko
- Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, 119071 Moscow, Russia;
- Correspondence: (K.M.B.); (L.E.P.)
| | - Mariya V. Kryukova
- Kurchatov Complex of NBICS-Technologies, National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (M.V.K.); (A.Y.N.); (D.A.K.)
| | - Lada E. Petrovskaya
- Department of Bioengineering, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia; (E.A.K.); (D.A.D.); (M.P.K.)
- Correspondence: (K.M.B.); (L.E.P.)
| | - Elena A. Kryukova
- Department of Bioengineering, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia; (E.A.K.); (D.A.D.); (M.P.K.)
| | - Alena Y. Nikolaeva
- Kurchatov Complex of NBICS-Technologies, National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (M.V.K.); (A.Y.N.); (D.A.K.)
| | - Dmitry A. Korzhenevsky
- Kurchatov Complex of NBICS-Technologies, National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (M.V.K.); (A.Y.N.); (D.A.K.)
| | - Galina Yu. Lomakina
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia;
- Department of Fundamental Sciences, Bauman Moscow State Technical University, 105005 Moscow, Russia
| | - Ksenia A. Novototskaya-Vlasova
- Laboratory of Soil Cryology, Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, 142290 Pushchino, Russia; (K.A.N.-V.); (E.M.R.)
| | - Elizaveta M. Rivkina
- Laboratory of Soil Cryology, Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, 142290 Pushchino, Russia; (K.A.N.-V.); (E.M.R.)
| | - Dmitry A. Dolgikh
- Department of Bioengineering, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia; (E.A.K.); (D.A.D.); (M.P.K.)
- Department of Biology, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Mikhail P. Kirpichnikov
- Department of Bioengineering, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia; (E.A.K.); (D.A.D.); (M.P.K.)
- Department of Biology, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Vladimir O. Popov
- Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, 119071 Moscow, Russia;
- Kurchatov Complex of NBICS-Technologies, National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (M.V.K.); (A.Y.N.); (D.A.K.)
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11
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Kryukova MV, Petrovskaya LE, Novototskaya-Vlasova KA, Kryukova EA, Yakimov SA, Nikolaeva AY, Boyko KM, Dolgikh DA, Kirpichnikov MP. Effect of Cysteine Residue Substitution in the GCSAG Motif of the PMGL2 Esterase Active Site on the Enzyme Properties. BIOCHEMISTRY (MOSCOW) 2021; 85:709-716. [PMID: 32586234 DOI: 10.1134/s0006297920060085] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The gene coding for PMGL2 esterase, which belongs to the family of mammalian hormone-sensitive lipases (HSLs), was discovered by screening a metagenomic DNA library from a permafrost soil. The active site of PMGL2 contains conserved GXSXG motif which includes Cys173 residue next to the catalytic Ser174. In order to clarify the functional role of the cysteine residue in the GCSAG motif, we constructed a number of PMGL2 mutants with Cys173 substitutions and studied their properties. The specific activity of the C173D mutant exceeded the specific activity of the wild-type enzyme (wtPMGL2) by 60%, while the C173T/C202S mutant displayed reduced catalytic activity. The activity of the C173D mutant with p-nitrophenyl octanoate was 15% higher, while the activity of the C173T/C202S mutant was 17% lower compared to wtPMGL2. The C173D mutant was also characterized by a high activity at low temperatures (20-35°C) and significant loss of thermal stability. The kcat value for this protein was 56% higher than for the wild-type enzyme. The catalytic constants of the C173S mutant were close to those of wtPMGL2; this enzyme also demonstrated the highest thermal stability among the studied mutants. The obtained results demonstrate that substitutions of amino acid residues adjacent to the catalytic serine residue in the GXSXG motif can have a significant effect on the properties of PMGL2 esterase.
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Affiliation(s)
- M V Kryukova
- Kurchatov NBICS-Technologies Complex, Kurchatov Institute National Research Centre, Moscow, 123182, Russia
| | - L E Petrovskaya
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia.
| | - K A Novototskaya-Vlasova
- Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia
| | - E A Kryukova
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
| | - S A Yakimov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia
| | - A Y Nikolaeva
- Kurchatov NBICS-Technologies Complex, Kurchatov Institute National Research Centre, Moscow, 123182, Russia
| | - K M Boyko
- Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, 119071, Russia
| | - D A Dolgikh
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia.,Lomonosov Moscow State University, Faculty of Biology, Moscow, 119234, Russia
| | - M P Kirpichnikov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, 117997, Russia.,Lomonosov Moscow State University, Faculty of Biology, Moscow, 119234, Russia
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12
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Perfumo A, Freiherr von Sass GJ, Nordmann EL, Budisa N, Wagner D. Discovery and Characterization of a New Cold-Active Protease From an Extremophilic Bacterium via Comparative Genome Analysis and in vitro Expression. Front Microbiol 2020; 11:881. [PMID: 32528424 PMCID: PMC7247812 DOI: 10.3389/fmicb.2020.00881] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Accepted: 04/16/2020] [Indexed: 01/05/2023] Open
Abstract
Following a screening of Antarctic glacier forefield-bacteria for novel cold-active enzymes, a psychrophilic strain Psychrobacter sp. 94-6PB was selected for further characterization of enzymatic activities. The strain produced lipases and proteases in the temperature range of 4-18°C. The coding sequence of an extracellular serine-protease was then identified via comparative analysis across Psychrobacter sp. genomes, PCR-amplified in our strain 94-6PB and expressed in the heterologous host E. coli. The purified enzyme (80 kDa) resulted to be a cold-active alkaline protease, performing best at temperatures of 20-30°C and pH 7-9. It was stable in presence of common inhibitors [β-mercaptoethanol (β-ME), dithiothreitol (DTT), urea, phenylmethylsulfonyl fluoride (PMSF) and ethylenediaminetetraacetic acid (EDTA)] and compatible with detergents and surfactants (Tween 20, Tween 80, hydrogen peroxide and Triton X-100). Because of these properties, the P94-6PB protease may be suitable for use in a new generation of laundry products for cold washing. Furthermore, we assessed the microdiversity of this enzyme in Psychrobacter organisms from different cold habitats and found several gene clusters that correlated with specific ecological niches. We then discussed the role of habitat specialization in shaping the biodiversity of proteins and enzymes and anticipate far-reaching implications for the search of novel variants of biotechnological products.
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Affiliation(s)
- Amedea Perfumo
- GFZ German Research Centre for Geosciences, Helmholtz Centre Potsdam, Section Geomicrobiology, Potsdam, Germany
- Polar Terrestrial Environmental System Division, Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute, Potsdam, Germany
| | | | - Eva-Lena Nordmann
- GFZ German Research Centre for Geosciences, Helmholtz Centre Potsdam, Section Geomicrobiology, Potsdam, Germany
- Institute of Chemistry and Biology of the Marine Environment, Carl-von-Ossietzky Universität Oldenburg, Oldenburg, Germany
| | - Nediljko Budisa
- Institute of Chemistry, Technische Universität Berlin, Berlin, Germany
- Institute of Chemistry, University of Manitoba, Winnipeg, MB, Canada
| | - Dirk Wagner
- GFZ German Research Centre for Geosciences, Helmholtz Centre Potsdam, Section Geomicrobiology, Potsdam, Germany
- Institute of Geosciences, University of Potsdam, Potsdam, Germany
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13
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Le LTHL, Yoo W, Jeon S, Lee C, Kim KK, Lee JH, Kim TD. Biodiesel and flavor compound production using a novel promiscuous cold-adapted SGNH-type lipase ( HaSGNH1) from the psychrophilic bacterium Halocynthiibacter arcticus. BIOTECHNOLOGY FOR BIOFUELS 2020; 13:55. [PMID: 32190120 PMCID: PMC7074997 DOI: 10.1186/s13068-020-01696-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 03/05/2020] [Indexed: 06/10/2023]
Abstract
BACKGROUND Biodiesel and flavor compound production using enzymatic transesterification by microbial lipases provides mild reaction conditions and low energy cost compared to the chemical process. SGNH-type lipases are very effective catalysts for enzymatic transesterification due to their high reaction rate, great stability, relatively small size for convenient genetic manipulations, and ease of immobilization. Hence, it is highly important to identify novel SGNH-type lipases with high catalytic efficiencies and good stabilities. RESULTS A promiscuous cold-adapted SGNH-type lipase (HaSGNH1) from Halocynthiibacter arcticus was catalytically characterized and functionally explored. HaSGNH1 displayed broad substrate specificity that included tert-butyl acetate, glucose pentaacetate, and p-nitrophenyl esters with excellent stability and high efficiency. Important amino acids (N83, M86, R87, F131, and I173F) around the substrate-binding pocket were shown to be responsible for catalytic activity, substrate specificity, and reaction kinetics. Moreover, immobilized HaSGNH1 was used to produce high yields of butyl and oleic esters. CONCLUSIONS This work provides a molecular understanding of substrate specificities, catalytic regulation, immobilization, and industrial applications of a promiscuous cold-adapted SGNH-type lipase (HaSGNH1) from H. arcticus. This is the first analysis on biodiesel and flavor synthesis using a cold-adapted halophilic SGNH-type lipase from a Halocynthiibacter species.
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Affiliation(s)
- Ly Thi Huong Luu Le
- Department of Chemistry, College of Natural Science, Sookmyung Women’s University, Seoul, 04310 South Korea
| | - Wanki Yoo
- Department of Chemistry, College of Natural Science, Sookmyung Women’s University, Seoul, 04310 South Korea
- Department of Molecular Cell Biology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, 440-746 South Korea
| | - Sangeun Jeon
- Department of Chemistry, College of Natural Science, Sookmyung Women’s University, Seoul, 04310 South Korea
| | - Changwoo Lee
- Department of Polar Sciences, University of Science and Technology (UST), Incheon, 21990 South Korea
- Unit of Polar Genomics, Korea Polar Research Institute (KOPRI), Incheon, 21990 South Korea
| | - Kyeong Kyu Kim
- Department of Molecular Cell Biology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, 440-746 South Korea
| | - Jun Hyuck Lee
- Department of Polar Sciences, University of Science and Technology (UST), Incheon, 21990 South Korea
- Unit of Polar Genomics, Korea Polar Research Institute (KOPRI), Incheon, 21990 South Korea
| | - T. Doohun Kim
- Department of Chemistry, College of Natural Science, Sookmyung Women’s University, Seoul, 04310 South Korea
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14
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Identification and characterization of a novel bacterial carbohydrate esterase from the bacterium Pantoea ananatis Sd-1 with potential for degradation of lignocellulose and pesticides. Biotechnol Lett 2020; 42:1479-1488. [PMID: 32144558 DOI: 10.1007/s10529-020-02855-8] [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: 10/07/2019] [Accepted: 02/27/2020] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Identification and characterization of a novel bacterial carbohydrate esterase (PaCes7) with application potential for lignocellulose and pesticide degradation. RESULTS PaCes7 was identified from the lignocellulolytic bacterium, Pantoea ananatis Sd-1 as a new carbohydrate esterase. Recombinant PaCes7 heterologously expressed in Escherichia coli showed a clear preference for esters with short-chain fatty acids and exhibited maximum activity towards α-naphthol acetate at 37 °C and pH 7.5. Purified PaCes7 exhibited its catalytic activity under mesophilic conditions and retained more than 40% activity below 30 °C. It displayed a relatively wide pH stability from pH 6-11. Furthermore, the enzyme was strongly resistant to Mg2+, Pb2+, and Co2+ and activated by K+ and Ca2+. Both P. ananatis Sd-1 and PaCes7 could degrade the pesticide carbaryl. Additionally, PaCes7 was shown to work in combination with cellulase and/or xylanase in rice straw degradation. CONCLUSIONS The data suggest that PaCes7 possesses promising biotechnological potential.
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15
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Boyko KM, Kryukova MV, Petrovskaya LE, Nikolaeva AY, Korzhenevsky DA, Novototskaya-Vlasova KA, Rivkina EM, Dolgikh DA, Kirpichnikov MP, Popov VO. Crystal structure of PMGL2 esterase from the hormone-sensitive lipase family with GCSAG motif around the catalytic serine. PLoS One 2020; 15:e0226838. [PMID: 31990908 PMCID: PMC6986724 DOI: 10.1371/journal.pone.0226838] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 12/05/2019] [Indexed: 12/26/2022] Open
Abstract
Lipases comprise a large class of hydrolytic enzymes which catalyze the cleavage of the ester bonds in triacylglycerols and find numerous biotechnological applications. Previously, we have cloned the gene coding for a novel esterase PMGL2 from a Siberian permafrost metagenomic DNA library. We have determined the 3D structure of PMGL2 which belongs to the hormone-sensitive lipase (HSL) family and contains a new variant of the active site motif, GCSAG. Similar to many other HSLs, PMGL2 forms dimers in solution and in the crystal. Our results demonstrated that PMGL2 and structurally characterized members of the GTSAG motif subfamily possess a common dimerization interface that significantly differs from that of members of the GDSAG subfamily of known structure. Moreover, PMGL2 had a unique organization of the active site cavity with significantly different topology compared to the other lipolytic enzymes from the HSL family with known structure including the distinct orientation of the active site entrances within the dimer and about four times larger size of the active site cavity. To study the role of the cysteine residue in GCSAG motif of PMGL2, the catalytic properties and structure of its double C173T/C202S mutant were examined and found to be very similar to the wild type protein. The presence of the bound PEG molecule in the active site of the mutant form allowed for precise mapping of the amino acid residues forming the substrate cavity.
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Affiliation(s)
- Konstantin M. Boyko
- Department of Enzyme Engineering, Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
| | - Marya V. Kryukova
- Kurchatov Complex of NBICS-technologies, National Research Centre "Kurchatov Institute", Moscow, Russia
| | - Lada E. Petrovskaya
- Department of Bioengineering, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Alena Y. Nikolaeva
- Kurchatov Complex of NBICS-technologies, National Research Centre "Kurchatov Institute", Moscow, Russia
| | - Dmitry A. Korzhenevsky
- Kurchatov Complex of NBICS-technologies, National Research Centre "Kurchatov Institute", Moscow, Russia
| | - Ksenia A. Novototskaya-Vlasova
- Laboratory of Soil Cryology, Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, Pushchino, Moscow Region, Russia
| | - Elizaveta M. Rivkina
- Laboratory of Soil Cryology, Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, Pushchino, Moscow Region, Russia
| | - Dmitry A. Dolgikh
- Department of Bioengineering, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
- Department of Biology, M.V. Lomonosov Moscow State University, Moscow, Russia
| | - Mikhail P. Kirpichnikov
- Department of Bioengineering, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
- Department of Biology, M.V. Lomonosov Moscow State University, Moscow, Russia
| | - Vladimir O. Popov
- Department of Enzyme Engineering, Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
- Kurchatov Complex of NBICS-technologies, National Research Centre "Kurchatov Institute", Moscow, Russia
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16
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Noby N, Hussein A, Saeed H, Embaby AM. "Recombinant cold -adapted halotolerant, organic solvent-stable esterase (estHIJ) from Bacillus halodurans. Anal Biochem 2019; 591:113554. [PMID: 31863727 DOI: 10.1016/j.ab.2019.113554] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 12/08/2019] [Accepted: 12/17/2019] [Indexed: 12/12/2022]
Abstract
Esterases and lipases enduring harsh conditions, including low temperature and extreme tolerance to organic solvents, have attracted great attention in recent times. In the current study, a full open reading frame of 747 bp that encodes a novel, cold-adapted esterase (estHIJ) of 248 amino acids from Bacillus halodurans strain NAH-Egypt was heterologously cloned and expressed in E. coli BL21 (DE3) Rosetta. Amino acid sequence analysis revealed that estHIJ belongs to family XIII of lipolytic enzymes, with a characteristic pentapeptide motif (G-L-S-L-G). The recombinant estHIJ was purified using Ni-affinity chromatography to homogeneity with purification fold, yield, specific activity, and molecular weight (MW) of 3.5, 47.5%, 19.8 U/mg and 29 kDa, respectively. The enzyme showed preferential substrate specificity towards pNP-acetate (C2), with catalytic efficiency of 46,825 min-1 mM-1 estHIJ displayed optimal activity at 30 °C and pH (7.0-8.0). estHIJ demonstrated robust stability in the presence of 50% (v/v) non-polar solvents and 4 M NaCl after 15 h and 6 h of incubation, respectively. The promising features of the recombinant estHIJ underpin its potential in several fields, e.g., the synthesis of pharmaceutical compounds and the food industry.
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Affiliation(s)
- Nehad Noby
- Department of Biotechnology, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt
| | - Ahmed Hussein
- Department of Biotechnology, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt
| | - Hesham Saeed
- Department of Biotechnology, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt
| | - Amira M Embaby
- Department of Biotechnology, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt.
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17
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Bouley RA, Hinkovska-Galcheva V, Shayman JA, Tesmer JJG. Structural Basis of Lysosomal Phospholipase A 2 Inhibition by Zn 2. Biochemistry 2019; 58:1709-1717. [PMID: 30830753 PMCID: PMC6677152 DOI: 10.1021/acs.biochem.8b01124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Lysosomal phospholipase A2 (LPLA2/PLA2G15) is a key enzyme involved in lipid homeostasis and is characterized by both phospholipase A2 and transacylase activity and by an acidic pH optimum. Divalent cations such as Ca2+ and Mg2+ have previously been shown to have little effect on the activity of LPLA2, but the discovery of a novel crystal form of LPLA2 with Zn2+ bound in the active site suggested a role for this divalent cation in regulating enzyme activity. In this complex, the cation directly coordinates the serine and histidine of the α/β-hydrolase triad and stabilizes a closed conformation. This closed conformation is characterized by an inward shift of the lid loop, which extends over the active site and effectively blocks access to one of its lipid acyl chain binding tracks. Therefore, we hypothesized that Zn2+ would inhibit LPLA2 activity at a neutral but not acidic pH because histidine would be positively charged at lower pH. Indeed, Zn2+ was found to inhibit the esterase activity of LPLA2 in a noncompetitive manner exclusively at a neutral pH (between 6.5 and 8.0). Because lysosomes are reservoirs of Zn2+ in cells, the pH optimum of LPLA2 might allow it to catalyze acyl transfer unimpeded within the organelle. We conjecture that Zn2+ inhibition of LPLA2 at higher pH maintains a lower activity of the esterase in environments where its activity is not typically required.
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Affiliation(s)
- Renee A. Bouley
- Life Sciences Institute and Department of Pharmacology, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Vania Hinkovska-Galcheva
- Department of Internal Medicine, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - James A. Shayman
- Department of Internal Medicine, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - John J. G. Tesmer
- Departments of Biological Sciences and of Medicinal Chemistry & Molecular Pharmacology, Purdue University, West Lafayette, Indiana 47907, United States
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18
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Characterization and mutation anaylsis of a cold-active bacterial hormone-sensitive lipase from Salinisphaera sp. P7-4. Arch Biochem Biophys 2019; 663:132-142. [DOI: 10.1016/j.abb.2019.01.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 01/10/2019] [Accepted: 01/10/2019] [Indexed: 11/18/2022]
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19
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Cold survival strategies for bacteria, recent advancement and potential industrial applications. Arch Microbiol 2018; 201:1-16. [PMID: 30478730 DOI: 10.1007/s00203-018-1602-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Revised: 11/04/2018] [Accepted: 11/24/2018] [Indexed: 12/12/2022]
Abstract
Microorganisms have evolved themselves to thrive under various extreme environmental conditions such as extremely high or low temperature, alkalinity, and salinity. These microorganisms adapted several metabolic processes to survive and reproduce efficiently under such extreme environments. As the major proportion of earth is covered with the cold environment and is exploited by human beings, these sites are not pristine anymore. Human interventions are a great reason for disturbing the natural biogeochemical cycles in these regions. The survival strategies of these organisms have shown great potential for helping us to restore these pristine sites and the use of isolated cold-adapted enzymes from these organisms has also revolutionized various industrial products. This review gives you the insight of psychrophilic enzyme adaptations and their industrial applications.
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20
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Noby N, Saeed H, Embaby AM, Pavlidis IV, Hussein A. Cloning, expression and characterization of cold active esterase (EstN7) from Bacillus cohnii strain N1: A novel member of family IV. Int J Biol Macromol 2018; 120:1247-1255. [PMID: 30063933 DOI: 10.1016/j.ijbiomac.2018.07.169] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 07/25/2018] [Accepted: 07/26/2018] [Indexed: 01/11/2023]
Abstract
Esterases and lipases from extremophiles have attracted great attention due to their unique characteristics and wide applications. In the present study, an open reading frame (ORF) encoding a novel cold active esterase (EstN7) from Bacillus cohnii strain N1 was cloned and expressed in Escherichia coli. The full-length esterase gene encoding a protein of 320 amino acids with estimated molecular weight of 37.0 kDa. Amino acid sequence analysis revealed that the EstN7 belongs to family IV lipases with a characteristic penta-peptide motif (GXSXG), the catalytic triad Ser, Asp, His and the conserved HGGG motif of the family IV. The recombinant enzyme was purified to apparent homogeneity using nickel-affinity chromatography with a purification fold of 5 and recovery 94.5%. The specific activity of the purified enzyme was 336.89 U/mg. The recombinant EstN7 showed optimal activity at 5 °C moreover, EstN7 displayed full robust stability in the presence of wide range of organic solvents. The purified enzyme had Km and Vmax of 45 ± 0.019 μM and 1113 μmol min-1 mg-1, respectively on p-NP-acetate. These promising characteristics of the recombinant EstN7 would underpin its possible usage with high potential in the synthesis of fragile compounds in pharmaceutical industries.
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Affiliation(s)
- Nehad Noby
- Department of Biotechnology, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt.
| | - Hesham Saeed
- Department of Biotechnology, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt.
| | - Amira M Embaby
- Department of Biotechnology, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt
| | | | - Ahmed Hussein
- Department of Biotechnology, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt
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21
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Shcherbakova V, Troshina O. Biotechnological perspectives of microorganisms isolated from the Polar Regions. MICROBIOLOGY AUSTRALIA 2018. [DOI: 10.1071/ma18042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Polar permanently frozen grounds cover more than 20% of the earth's surface, and about 60% of the Russian territories are permafrost. In the permafrost environments, the combination of low temperature and poor availability of liquid water make these habitats extremely inhospitable for life. To date, both culture-dependent and culture-independent methods have shown that permafrost is a habitat for microorganisms of all three domains: Bacteria, Archaea and Eukarya. An overview of applying psychrophilic and psychrotolerant bacteria and archaea isolated from Arctic and Antarctic permafrost ecosystems in biotechnological processes of wastewater treatment, production of cold-adapted enzymes, etc. is discussed here. The study of existing collections of microorganisms isolated from permanently cold habitats, improved methods of sampling and enrichment will increase the potential biotechnological applications of permafrost bacteria and archaea producing unique biomolecules.
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22
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Fusion with the cold-active esterase facilitates autotransporter-based surface display of the 10th human fibronectin domain in Escherichia coli. Extremophiles 2017; 22:141-150. [PMID: 29256084 DOI: 10.1007/s00792-017-0990-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 12/08/2017] [Indexed: 10/24/2022]
Abstract
Cell surface display is a popular approach for the construction of whole-cell biocatalysts, live vaccines, and screening of combinatorial libraries. To develop a novel surface display system for the popular scaffold protein 10th human fibronectin type III domain (10Fn3) in Escherichia coli cells, we have used an α-helical linker and a C-terminal translocator domain from previously characterized autotransporter from Psychrobacter cryohalolentis K5T. The level of 10Fn3 passenger exposure at the cell surface provided by the hybrid autotransporter Fn877 and its C-terminal variants was low. To improve it, the fusion proteins containing 10Fn3 and the native autotransporter passenger Est877 or the cold-active esterase EstPc in different orientations were constructed and expressed as passenger domains. Using the whole-cell ELISA and activity assays, we have demonstrated that N-terminal position of EstPc in the passenger significantly improves the efficiency of the surface display of 10Fn3 in E. coli cells.
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23
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Fan X, Liang M, Wang L, Chen R, Li H, Liu X. Aii810, a Novel Cold-Adapted N-Acylhomoserine Lactonase Discovered in a Metagenome, Can Strongly Attenuate Pseudomonas aeruginosa Virulence Factors and Biofilm Formation. Front Microbiol 2017; 8:1950. [PMID: 29067011 PMCID: PMC5641347 DOI: 10.3389/fmicb.2017.01950] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 09/22/2017] [Indexed: 11/16/2022] Open
Abstract
The pathogen Pseudomonas aeruginosa uses quorum sensing (QS) to control virulence and biofilm formation. Enzymatic disruption of quorum sensing is a promising anti-infection therapeutic strategy that does not rely on antibiotics. Here, a novel gene (aii810) encoding an N-acylhomoserine lactonase was isolated from the Mao-tofu metagenome for the first time. Aii810 encoded a protein of 269 amino acids and was expressed in Escherichia coli BL21 (DE3) in soluble form. It showed the highest activity at 20°C, and it maintained 76.5% of activity at 0°C and more than 50% activity at 0–40°C. The optimal pH was 8.0. It was stable in both neutral and slightly alkaline conditions and at temperatures below 40°C. The enzyme hydrolyzed several ρ-nitrophenyl esters, but its best substrate was ρ-nitrophenyl acetate. Its kcat and Km values were 347.7 S-1 and 205.1 μM, respectively. It efficiently degraded N-butyryl-L-homoserine lactone and N-(3-oxododecanoyl)-L-homoserine lactone, exceeding hydrolysis rates of 72.3 and 100%, respectively. Moreover, Aii810 strongly attenuated P. aeruginosa virulence and biofilm formation. This enzyme with high anti-QS activity was the most cold-adapted N-acylhomoserine lactonase reported, which makes it an attractive enzyme for use as a therapeutic agent against P. aeruginosa infection.
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Affiliation(s)
- Xinjiong Fan
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Mingjun Liang
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Lei Wang
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Ruo Chen
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - He Li
- School of Basic Courses, Guangdong Pharmaceutical University, Guangzhou, China
| | - Xiaolong Liu
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China
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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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25
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Fan X, Liang W, Li Y, Li H, Liu X. Identification and immobilization of a novel cold-adapted esterase, and its potential for bioremediation of pyrethroid-contaminated vegetables. Microb Cell Fact 2017; 16:149. [PMID: 28893251 PMCID: PMC5594479 DOI: 10.1186/s12934-017-0767-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 09/07/2017] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Pyrethroids are potentially harmful to living organisms and ecosystems. Thus, concerns have been raised about pyrethroid residues and their persistence in agricultural products. To date, although several pyrethroid-hydrolyzing enzymes have been cloned, very few reports are available on pyrethroid-hydrolyzing enzymes with cold adaptation, high hydrolytic activity and good reusability, indispensable properties in practical bioremediation of pyrethroid-contaminated vegetables. RESULTS Here, a novel gene (est684) encoding pyrethroid-hydrolyzing esterase was isolated from the Mao-tofu metagenome for the first time. Est684 encoded a protein of 227 amino acids and was expressed in Escherichia coli BL21 (DE3) in soluble form. The optimum temperature was 18 °C. It maintained 46.1% of activity at 0 °C and over 50% of its maximal activity at 4-35 °C. With the goal of enhancing stability and recycling biocatalysts, we used mesoporous silica SBA-15 as a nanometer carrier for the efficient immobilization of Est684 by the absorption method. The best conditions were an esterase-to-silica ratio of 0.96 mg/g (w/w) and an adsorption time of 30 min at 10 °C. Under these conditions, the recovery of enzyme activity was 81.3%. A large improvement in the thermostability of Est684 was achieved. The half-life (T1/2) of the immobilized enzyme at 35 °C was 6 h, 4 times longer than the soluble enzyme. Interestingly, the immobilized Est684 had less loss in enzyme activity up to 12 consecutive cycles, and it retained nearly 54% of its activity after 28 cycles, indicating excellent operational stability. Another noteworthy characteristic was its high catalytic activity. It efficiently hydrolyzed cyhalothrin, cypermethrin, and fenvalreate in pyrethroid-contaminated cucumber within 5 min, reaching over 85% degradation efficiency after four cycles. CONCLUSIONS A novel cold-adapted pyrethroid-hydrolyzing esterase was screened from the Mao-tofu metagenome. This report is the first on immobilizing pyrethroid-hydrolyzing enzyme on mesoporous silica. The immobilized enzyme with high hydrolytic activity and outstanding reusability has a remarkable potential for bioremediation of pyrethroid-contaminated vegetables, and it is proposed as an industrial enzyme.
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Affiliation(s)
- Xinjiong Fan
- School of Basic Medical Sciences, Anhui Medical University, 81 Meishan Rd, Hefei, 230032, Anhui, People's Republic of China
| | - Weiqu Liang
- Dongguan Agriculture Research Center, Dongguan, 523079, Guangdong, People's Republic of China
| | - Yanfang Li
- Dongguan Agriculture Research Center, Dongguan, 523079, Guangdong, People's Republic of China
| | - He Li
- School of Basic Courses, Guangdong Pharmaceutical University, 280 E. Outer Ring Rd., Guangzhou, 510006, Guangdong, People's Republic of China
| | - Xiaolong Liu
- School of Basic Medical Sciences, Anhui Medical University, 81 Meishan Rd, Hefei, 230032, Anhui, People's Republic of China.
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Memarpoor-Yazdi M, Karbalaei-Heidari HR, Khajeh K. Production of the renewable extremophile lipase: Valuable biocatalyst with potential usage in food industry. FOOD AND BIOPRODUCTS PROCESSING 2017. [DOI: 10.1016/j.fbp.2016.12.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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27
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Lee CW, Kwon S, Park SH, Kim BY, Yoo W, Ryu BH, Kim HW, Shin SC, Kim S, Park H, Kim TD, Lee JH. Crystal Structure and Functional Characterization of an Esterase (EaEST) from Exiguobacterium antarcticum. PLoS One 2017; 12:e0169540. [PMID: 28125606 PMCID: PMC5268438 DOI: 10.1371/journal.pone.0169540] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 12/19/2016] [Indexed: 11/19/2022] Open
Abstract
A novel microbial esterase, EaEST, from a psychrophilic bacterium Exiguobacterium antarcticum B7, was identified and characterized. To our knowledge, this is the first report describing structural analysis and biochemical characterization of an esterase isolated from the genus Exiguobacterium. Crystal structure of EaEST, determined at a resolution of 1.9 Å, showed that the enzyme has a canonical α/β hydrolase fold with an α-helical cap domain and a catalytic triad consisting of Ser96, Asp220, and His248. Interestingly, the active site of the structure of EaEST is occupied by a peracetate molecule, which is the product of perhydrolysis of acetate. This result suggests that EaEST may have perhydrolase activity. The activity assay showed that EaEST has significant perhydrolase and esterase activity with respect to short-chain p-nitrophenyl esters (≤C8), naphthyl derivatives, phenyl acetate, and glyceryl tributyrate. However, the S96A single mutant had low esterase and perhydrolase activity. Moreover, the L27A mutant showed low levels of protein expression and solubility as well as preference for different substrates. On conducting an enantioselectivity analysis using R- and S-methyl-3-hydroxy-2-methylpropionate, a preference for R-enantiomers was observed. Surprisingly, immobilized EaEST was found to not only retain 200% of its initial activity after incubation for 1 h at 80°C, but also retained more than 60% of its initial activity after 20 cycles of reutilization. This research will serve as basis for future engineering of this esterase for biotechnological and industrial applications.
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Affiliation(s)
- Chang Woo Lee
- Unit of Polar Genomics, Korea Polar Research Institute, Incheon, Republic of Korea
- Department of Polar Sciences, University of Science and Technology, Incheon, Republic of Korea
| | - Sena Kwon
- Department of Chemistry, College of Natural Science, Sookmyung Women’s University, Seoul, Korea
| | - Sun-Ha Park
- Unit of Polar Genomics, Korea Polar Research Institute, Incheon, Republic of Korea
| | - Boo-Young Kim
- Department of Chemistry, College of Natural Science, Sookmyung Women’s University, Seoul, Korea
| | - Wanki Yoo
- Department of Chemistry, College of Natural Science, Sookmyung Women’s University, Seoul, Korea
| | - Bum Han Ryu
- Department of Chemistry, College of Natural Science, Sookmyung Women’s University, Seoul, Korea
| | - Han-Woo Kim
- Unit of Polar Genomics, Korea Polar Research Institute, Incheon, Republic of Korea
- Department of Polar Sciences, University of Science and Technology, Incheon, Republic of Korea
| | - Seung Chul Shin
- Unit of Polar Genomics, Korea Polar Research Institute, Incheon, Republic of Korea
| | - Sunghwan Kim
- New Drug Development Center, Daegu-Gyeongpuk Medical Innovation Foundation, Daegu, Republic of Korea
| | - Hyun Park
- Unit of Polar Genomics, Korea Polar Research Institute, Incheon, Republic of Korea
- Department of Polar Sciences, University of Science and Technology, Incheon, Republic of Korea
| | - T. Doohun Kim
- Department of Chemistry, College of Natural Science, Sookmyung Women’s University, Seoul, Korea
- * E-mail: (JHL); (TDK)
| | - Jun Hyuck Lee
- Unit of Polar Genomics, Korea Polar Research Institute, Incheon, Republic of Korea
- Department of Polar Sciences, University of Science and Technology, Incheon, Republic of Korea
- * E-mail: (JHL); (TDK)
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28
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A novel, versatile family IV carboxylesterase exhibits high stability and activity in a broad pH spectrum. Biotechnol Lett 2017; 39:577-587. [DOI: 10.1007/s10529-016-2282-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 12/21/2016] [Indexed: 10/20/2022]
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29
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Koh HY, Park H, Lee JH, Han SJ, Sohn YC, Lee SG. Proteomic and transcriptomic investigations on cold-responsive properties of the psychrophilic Antarctic bacterium Psychrobacter sp. PAMC 21119 at subzero temperatures. Environ Microbiol 2016; 19:628-644. [PMID: 27750393 DOI: 10.1111/1462-2920.13578] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 10/12/2016] [Indexed: 11/28/2022]
Abstract
Psychrobacter sp. PAMC 21119, isolated from Antarctic permafrost soil, grows and proliferates at subzero temperatures. However, its major mechanism of cold adaptation regulation remains poorly understood. We investigated the transcriptomic and proteomic responses of this species to cold temperatures by comparing profiles at -5°C and 20°C to understand how extreme microorganisms survive under subzero conditions. We found a total of 2,906 transcripts and 584 differentially expressed genes (≥ twofold, P <0.005) by RNA-seq. Genes for translation, ribosomal structure and biogenesis were upregulated, and lipid transport and metabolism was downregulated at low temperatures. A total of 60 protein spots (≥ 1.8 fold, P < 0.005) showed differential expression on two-dimensional gel electrophoresis and the proteins were identified by mass spectrometry. The most prominent upregulated proteins in response to cold were involved in metabolite transport, protein folding and membrane fluidity. Proteins involved in energy production and conversion, and heme protein synthesis were downregulated. Moreover, isoform exchange of cold-shock proteins was detected at both temperatures. Interestingly, pathways for acetyl-CoA metabolism, putrescine synthesis and amino acid metabolism were upregulated. This study highlights some of the strategies and different physiological states that Psychrobacter sp. PAMC 21119 has developed to adapt to the cold environment in Antarctica.
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Affiliation(s)
- Hye Yeon Koh
- Unit of Polar Genomics Korea Polar Research Institute, Incheon, South Korea.,Department of Marine Molecular Biotechnology, Gangneung-Wonju National University, Gangneung, South Korea
| | - Hyun Park
- Unit of Polar Genomics Korea Polar Research Institute, Incheon, South Korea.,Department of Polar Sciences, University of Science and Technology, Incheon, South Korea
| | - Jun Hyuck Lee
- Unit of Polar Genomics Korea Polar Research Institute, Incheon, South Korea.,Department of Polar Sciences, University of Science and Technology, Incheon, South Korea
| | - Se Jong Han
- Unit of Polar Genomics Korea Polar Research Institute, Incheon, South Korea.,Department of Polar Sciences, University of Science and Technology, Incheon, South Korea
| | - Young Chang Sohn
- Department of Marine Molecular Biotechnology, Gangneung-Wonju National University, Gangneung, South Korea
| | - Sung Gu Lee
- Unit of Polar Genomics Korea Polar Research Institute, Incheon, South Korea.,Department of Polar Sciences, University of Science and Technology, Incheon, South Korea
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Zarafeta D, Szabo Z, Moschidi D, Phan H, Chrysina ED, Peng X, Ingham CJ, Kolisis FN, Skretas G. EstDZ3: A New Esterolytic Enzyme Exhibiting Remarkable Thermostability. Front Microbiol 2016; 7:1779. [PMID: 27899916 PMCID: PMC5110521 DOI: 10.3389/fmicb.2016.01779] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 10/24/2016] [Indexed: 11/25/2022] Open
Abstract
Lipolytic enzymes that retain high levels of catalytic activity when exposed to a variety of denaturing conditions are of high importance for a number of biotechnological applications. In this study, we aimed to identify new lipolytic enzymes, which are highly resistant to prolonged exposure to elevated temperatures. To achieve this, we searched for genes encoding for such proteins in the genomes of a microbial consortium residing in a hot spring located in China. After performing functional genomic screening on a bacterium of the genus Dictyoglomus, which was isolated from this hot spring following in situ enrichment, we identified a new esterolytic enzyme, termed EstDZ3. Detailed biochemical characterization of the recombinant enzyme, revealed that it constitutes a slightly alkalophilic and highly active esterase against esters of fatty acids with short to medium chain lengths. Importantly, EstDZ3 exhibits remarkable thermostability, as it retains high levels of catalytic activity after exposure to temperatures as high as 95°C for several hours. Furthermore, it exhibits very good stability against exposure to high concentrations of a variety of organic solvents. Interestingly, EstDZ3 was found to have very little similarity to previously characterized esterolytic enzymes. Computational modeling of the three-dimensional structure of this new enzyme predicted that it exhibits a typical α/β hydrolase fold that seems to include a “subdomain insertion”, which is similar to the one present in its closest homolog of known function and structure, the cinnamoyl esterase Lj0536 from Lactobacillus johnsonii. As it was found in the case of Lj0536, this structural feature is expected to be an important determinant of the catalytic properties of EstDZ3. The high levels of esterolytic activity of EstDZ3, combined with its remarkable thermostability and good stability against a range of organic solvents and other denaturing agents, render this new enzyme a candidate biocatalyst for high-temperature biotechnological applications.
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Affiliation(s)
- Dimitra Zarafeta
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research FoundationAthens, Greece; Laboratory of Biotechnology, School of Chemical Engineering, National Technical University of AthensAthens, Greece
| | | | - Danai Moschidi
- Laboratory of Biotechnology, School of Chemical Engineering, National Technical University of Athens Athens, Greece
| | - Hien Phan
- Danish Archaea Centre, Department of Biology, Copenhagen University Copenhagen, Denmark
| | - Evangelia D Chrysina
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation Athens, Greece
| | - Xu Peng
- Danish Archaea Centre, Department of Biology, Copenhagen University Copenhagen, Denmark
| | | | - Fragiskos N Kolisis
- Laboratory of Biotechnology, School of Chemical Engineering, National Technical University of Athens Athens, Greece
| | - Georgios Skretas
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation Athens, Greece
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31
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Hang Y, Ran S, Wang X, Jiao J, Wang S, Liu Z. Mutational analysis and stability characterization of a novel esterase of lipolytic enzyme family VI from Shewanella sp. Int J Biol Macromol 2016; 93:655-664. [PMID: 27632949 DOI: 10.1016/j.ijbiomac.2016.09.032] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 08/19/2016] [Accepted: 09/11/2016] [Indexed: 11/17/2022]
Abstract
Esterases are widely used in different industries. Here, a novel esterase, Esth, with low identity with previously reported esterases, was identified and characterized. The results showed that Esth was a cold-adapted esterase and retained 50% of its maximum activity at 0°C. Besides, Esth showed great activity and stability in high concentrations of NaCl. When treated with some organic solvents, detergents and metal ions, Esth showed high activity as well. The kcat/Km value of Esth was 29.5s-1mM-1, suggesting that it has higher catalytic efficiency than all the previously reported esterases from the same family, lipolytic enzyme family VI. The structural modeling showed that changing Ala129 into Gly would form a new hydrogen bond between ser125 and Gly129 and make theα-helix longer, which might influence on the thermostability of enzymes (Kumar, 2000). To confirm this, the mutant EsthA129G was obtained by site-directed mutagenesis. The result indicated that EsthA129G retained over 70% of the activity versus 12% for Esth after incubation at 55°C for 120min, showed a nearly six fold increase when compared with wild type. Overall, Esth shows a potential application prospect in extreme conditions and the mutation research can provide some structural information about thermostable enzymes.
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Affiliation(s)
- Yian Hang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Shi Ran
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Xiangyu Wang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Jingwen Jiao
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Shunyao Wang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Ziduo Liu
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
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32
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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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33
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Immobilization of a novel cold active esterase onto Fe3O4∼cellulose nano-composite enhances catalytic properties. Int J Biol Macromol 2016; 87:488-97. [DOI: 10.1016/j.ijbiomac.2016.03.016] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 03/08/2016] [Accepted: 03/09/2016] [Indexed: 01/27/2023]
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34
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Wang B, Wang A, Cao Z, Zhu G. Characterization of a novel highly thermostable esterase from the Gram-positive soil bacteriumStreptomyces lividansTK64. Biotechnol Appl Biochem 2016; 63:334-43. [DOI: 10.1002/bab.1465] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 11/21/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Baojuan Wang
- Institute of Molecular Biology and Biotechnology and Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources; College of Life Sciences; Anhui Normal University; Wuhu Anhui People's Republic of China
| | - Ao Wang
- Institute of Molecular Biology and Biotechnology and Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources; College of Life Sciences; Anhui Normal University; Wuhu Anhui People's Republic of China
- College of Physical Education; Anhui Normal University; Wuhu Anhui People's Republic of China
| | - Zhengyu Cao
- Institute of Molecular Biology and Biotechnology and Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources; College of Life Sciences; Anhui Normal University; Wuhu Anhui People's Republic of China
| | - Guoping Zhu
- Institute of Molecular Biology and Biotechnology and Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources; College of Life Sciences; Anhui Normal University; Wuhu Anhui People's Republic of China
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35
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Characterization of a novel cold active and salt tolerant esterase from Zunongwangia profunda. Enzyme Microb Technol 2016; 85:1-11. [DOI: 10.1016/j.enzmictec.2015.12.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2015] [Revised: 12/18/2015] [Accepted: 12/29/2015] [Indexed: 01/13/2023]
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36
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Petrovskaya LE, Novototskaya-Vlasova KA, Spirina EV, Durdenko EV, Lomakina GY, Zavialova MG, Nikolaev EN, Rivkina EM. Expression and characterization of a new esterase with GCSAG motif from a permafrost metagenomic library. FEMS Microbiol Ecol 2016; 92:fiw046. [PMID: 26929439 DOI: 10.1093/femsec/fiw046] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/24/2016] [Indexed: 11/14/2022] Open
Abstract
As a result of construction and screening of a metagenomic library prepared from a permafrost-derived microcosm, we have isolated a novel gene coding for a putative lipolytic enzyme that belongs to the hormone-sensitive lipase family. It encodes a polypeptide of 343 amino acid residues whose amino acid sequence displays maximum likelihood with uncharacterized proteins from Sphingomonas species. A putative catalytic serine residue of PMGL2 resides in a new variant of a recently discovered GTSAG sequence in which a Thr residue is replaced by a Cys residue (GCSAG). The recombinant PMGL2 was produced in Escherichia coli cells and purified by Ni-affinity chromatography. The resulting protein preferably utilizes short-chain p-nitrophenyl esters (C4 and C8) and therefore is an esterase. It possesses maximum activity at 45°C in slightly alkaline conditions and has limited thermostability at higher temperatures. Activity of PMGL2 is stimulated in the presence of 0.25-1.5 M NaCl indicating the good salt tolerance of the new enzyme. Mass spectrometric analysis demonstrated that N-terminal methionine in PMGL2 is processed and cysteine residues do not form a disulfide bond. The results of the study demonstrate the significance of the permafrost environment as a unique genetic reservoir and its potential for metagenomic exploration.
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Affiliation(s)
- Lada E Petrovskaya
- Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, ul. Miklukho-Maklaya, 16/10, 117997, Moscow, Russia
| | - Ksenia A Novototskaya-Vlasova
- Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, Institutskaya str., 2, 142290, Pushchino, Moscow Region, Russia
| | - Elena V Spirina
- Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, Institutskaya str., 2, 142290, Pushchino, Moscow Region, Russia
| | - Ekaterina V Durdenko
- Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, Institutskaya str., 2, 142290, Pushchino, Moscow Region, Russia
| | - Galina Yu Lomakina
- Department of Chemistry, Lomonosov Moscow State University, Leninskiye Gory, 1/3, 119991, Moscow, Russia
| | - Maria G Zavialova
- Orekhovich Institute of Biomedical Chemistry, Russian Academy of Medical Sciences, ul. Pogodinskaya 10, 119121, Moscow, Russia
| | - Evgeny N Nikolaev
- Orekhovich Institute of Biomedical Chemistry, Russian Academy of Medical Sciences, ul. Pogodinskaya 10, 119121, Moscow, Russia Institute of Energy Problems of Chemical Physics, Russian Academy of Sciences, Leninskij pr. 38 k.2, 119334, Moscow, Russia
| | - Elizaveta M Rivkina
- Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, Institutskaya str., 2, 142290, Pushchino, Moscow Region, Russia
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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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38
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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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A cold-adapted, solvent and salt tolerant esterase from marine bacterium Psychrobacter pacificensis. Int J Biol Macromol 2015; 81:180-7. [DOI: 10.1016/j.ijbiomac.2015.07.045] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 07/22/2015] [Accepted: 07/24/2015] [Indexed: 11/20/2022]
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Ji X, Li S, Wang B, Zhang Q, Lin L, Dong Z, Wei Y. Expression, purification and characterization of a functional, recombinant, cold-active lipase (LipA) from psychrotrophic Yersinia enterocolitica. Protein Expr Purif 2015; 115:125-31. [PMID: 26256062 DOI: 10.1016/j.pep.2015.08.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 06/15/2015] [Accepted: 08/04/2015] [Indexed: 11/30/2022]
Abstract
A novel cold-active lipase gene encoding 294 amino acid residues was obtained from the Yersinia enterocolitica strain KM1. Sequence alignment and phylogenetic analysis revealed that this novel lipase is a new member of the bacterial lipase family I.1. The lipase shares the conserved GXSXG motif and catalytic triad Ser85-Asp239-His261. The recombinant protein LipA was solubly and heterogeneously expressed in Escherichia coli, purified by Ni-affinity chromatography, and then characterized. LipA was active over a broad range spanning 15-60°C with an optimum activity at 25°C and across a wide pH range from 5.0 to 11.0 with an optimum activity at pH 7.5. The molecular weight was estimated to be 34.2 KDa. The lipase could be activated by Mg(2+) and a low concentration (10%) of ethanol, dimethyl sulfoxide, methanol and acetonitrile, whereas it was strongly inhibited by Zn(2+), Cu(2+) and Mn(2+). This cold-active lipase may be a good candidate for detergents and biocatalysts at low temperature.
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Affiliation(s)
- Xiuling Ji
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, PR China
| | - Shan Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, PR China
| | - Baoqiang Wang
- College of Life Science and Technology, Gansu Agriculture University, Lanzhou, Gansu, PR China
| | - Qi Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, PR China
| | - Lianbing Lin
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, PR China
| | - Zhiyang Dong
- Institute of Microbiology Chinese Academy of Sciences, Beijing, PR China
| | - Yunlin Wei
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, PR China.
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Ji X, Chen G, Zhang Q, Lin L, Wei Y. Purification and characterization of an extracellular cold-adapted alkaline lipase produced by psychrotrophic bacterium Yersinia enterocolitica strain KM1. J Basic Microbiol 2015; 55:718-28. [PMID: 25677080 DOI: 10.1002/jobm.201400730] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 01/03/2015] [Indexed: 12/12/2022]
Abstract
An extracellular cold-adapted alkaline lipase from the psychrotrophic Yersinia enterocolitica strain KM1 was purified 26-fold to homogeneity. The enzyme was active over a broad range spanning 0-60 °C with an optimum activity at 37 °C, and it was found to be alkaline-preferring with an optimum activity at pH 9.0. The molecular weight was estimated to be 34.3 KDa and monomeric. The lipase could be activated by Ca(2+) and low concentration (10%) of ethanol, dimethyl sulphoxide, methanol, and acetonitrile, whereas it was strongly inhibited by Zn(2+), Cu(2+), SDS, EDTA, and PMSF. Using p-nitrophenyl butyrate as a substrate at 37 °C, the Km and Vmax of the enzyme were found to be 16.58 mM and 5.24 × 10(5) μM · min(-1), respectively. This extracellular cold-adapted alkaline lipase may be a good candidate for detergents and biocatalysts at low temperature.
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Affiliation(s)
- Xiuling Ji
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Yunnan, China.,Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Guiyuan Chen
- Biochemistry and Molecule Biology, Department of Basic Medicine College, Dali University, Dali, China
| | - Qi Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Lianbing Lin
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Yunlin Wei
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
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Özşahin E, Sezen K, Demirbağ Z. Amsacta moorei entomopoxvirus encodes a functional esterase (amv133) with protease activity. Intervirology 2015; 58:41-8. [PMID: 25591507 DOI: 10.1159/000369018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 10/09/2014] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES Lipolytic genes have been investigated in several viral genomes, and some of them show enzyme activity which can be used for various functions including the production of DNA replication metabolites, rescue from endosomes, and membrane fusion. Amsacta moorei entomopoxvirus (AMEV) replicates in nearly the entire insect body, especially in the adipose tissue. One of the open reading frames (ORFs) in the AMEV genome, amv133, encodes a putative lipase enzyme. In this study, we therefore investigate the enzyme activity of amv133. METHODS amv133 was aligned with known lipase genes and their homologs in entomopoxviruses. Expressed proteins were partially purified and assayed for lipase, esterase and protease. RESULTS We found that amv133 contains all the domains required for a functional lipase enzyme and that it shows a significant similarity with homologs in other entomopoxviruses. Since there is a similarity of the catalytic triad between lipases and serine proteases, we also investigated the protease activity of amv133. Lipase, esterase and protease assays showed that amv133 encodes a functional esterase enzyme with protease activity. CONCLUSION The current data show that amv133 is a conserved gene in all entomopoxvirus genomes sequenced so far and might contribute greatly to degrading the lipids or proteins and hence improve the virus infection.
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Affiliation(s)
- Emine Özşahin
- Department of Biology, Faculty of Science, Karadeniz Technical University, Trabzon, Turkey
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Novototskaya-Vlasova KA, Petrovskaya LE, Rivkina EM, Dolgikh DA, Kirpichnikov MP. Characterization of a cold-active lipase from Psychrobacter cryohalolentis K5(T) and its deletion mutants. BIOCHEMISTRY (MOSCOW) 2014; 78:385-94. [PMID: 23590441 DOI: 10.1134/s000629791304007x] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A gene coding for cold-active lipase from the psychrotrophic Gram-negative bacterium Psychrobacter cryohalolentis K5(T) isolated from a Siberian cryopeg has been cloned and expressed in Escherichia coli. The recombinant protein Lip1Pc with a 6× histidine tag at its C-terminus was purified by nickel affinity chromatography. With p-nitrophenyl dodecanoate (C12) as a substrate, the purified recombinant protein displayed maximum lipolytic activity at 25°C and pH 8.0. Increasing the temperature above 40°C and addition of various metal ions and organic solvents inhibited the enzymatic activity of Lip1Pc. Most nonionic detergents, such as Triton X-100 and Tween 20, slightly increased the lipase activity, while SDS completely inhibited it. To investigate the functional significance of the Lip1Pc N-terminal domain, we constructed five deletion mutants of this protein. The ND1 and ND2 mutants displayed specific activity reduced by 30-35%, while other truncated proteins were completely inactive. Both mutants demonstrated increased activity towards p-nitrophenyl decanoate (C10) and impaired utilization of C16 substrate. Although optimum reaction temperature of ND2 lowered to 20°C, it displayed enhanced stability by 44% after incubation at 40°C. The results prove that the N-terminal domain of Lip1Pc has a fundamental impact on the activity and stability of the protein.
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Affiliation(s)
- K A Novototskaya-Vlasova
- Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia.
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Petrovskaya LE, Novototskaya-Vlasova KA, Kryukova EA, Rivkina EM, Dolgikh DA, Kirpichnikov MP. Cell surface display of cold-active esterase EstPc with the use of a new autotransporter from Psychrobacter cryohalolentis K5(T). Extremophiles 2014; 19:161-70. [PMID: 25253411 DOI: 10.1007/s00792-014-0695-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 09/14/2014] [Indexed: 01/26/2023]
Abstract
We have cloned the gene coding for AT877-a new predicted member of the autotransporter protein family with an esterase passenger domain from permafrost bacterium Psychrobacter cryohalolentis K5(T). Expression of AT877 gene in Escherichia coli resulted in accumulation of the recombinant autotransporter in the outer membrane fraction and at the surface of the induced cells. AT877 displayed maximum hydrolytic activity toward medium-chain p-nitrophenyl esters (C8-C10) at 50 °C and was resistant to the presence of several metal ions, organic solvents and detergents. Previously, we have described a cold-active esterase EstPc from the same bacterium which possesses high activity at low temperatures and relatively high thermal stability. To construct a cell surface display system for EstPc, the hybrid autotransporter gene coding for EstPc with the α-helical linker and the translocator domain from AT877 was constructed and expressed in E. coli. According to the results of the cell fractionation studies and esterase activity measurements, the EstPc passenger was successfully displayed at the surface of the induced cells. It demonstrated a temperature optimum at 15-25 °C and a substrate preference toward p-nitrophenyl butyrate (C4). Obtained results provide a new example of the biotechnologically relevant enzyme from the permafrost microbial community with potential applications for the conversion of short- and medium-chain ester substrates and a basis for the construction of a new cell surface display platform.
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Affiliation(s)
- L E Petrovskaya
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, ul. Miklukho-Maklaya 16/10, Moscow, 117997, Russian Federation,
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Kim S, Wi AR, Park HJ, Kim D, Kim HW, Yim JH, Han SJ. Enhancing extracellular lipolytic enzyme production in an arctic bacterium, Psychrobacter sp. ArcL13, by using statistical optimization and fed-batch fermentation. Prep Biochem Biotechnol 2014; 45:348-64. [PMID: 25035942 DOI: 10.1080/10826068.2014.940964] [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] [Indexed: 10/24/2022]
Abstract
A strain isolated from seawater samples in the Chuckchi Sea and exhibiting extracellular lipolytic activity was identified using 16S rRNA gene sequence analysis as Psychrobacter sp. ArcL13. The lipolytic enzyme exhibited cold-active properties and high hydrolytic activity toward p-nitrophenyl caprylate (C8), p-nitrophenyl decanoate (C10), and sunflower oil. Statistical optimization of the medium components was performed to enhance the production of cold-active extracellular lipolytic activity. Glucose, yeast extract (YE), and NaCl were selected as the main efficient nutrient sources. Fed-batch fermentation using optimized medium with concentrated YE as the main feeding material showed a maximum lipolytic activity of 10.7 U/mL, which was a 21-fold increase in production over unoptimized flask culture conditions. The information obtained in the present study could prove applicable to the production of cold-active lipase on a large scale.
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Affiliation(s)
- Sunghui Kim
- a Division of Life Sciences , Korea Polar Research Institute , KIOST , Incheon , South Korea
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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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A novel esterase from a psychrotrophic bacterium Psychrobacter celer 3Pb1 showed cold-adaptation and salt-tolerance. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcatb.2013.10.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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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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Wei J, Timler JG, Knutson CM, Barney BM. Branched-chain 2-keto acid decarboxylases derived from Psychrobacter. FEMS Microbiol Lett 2013; 346:105-12. [PMID: 23826991 DOI: 10.1111/1574-6968.12208] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2013] [Revised: 06/27/2013] [Accepted: 06/28/2013] [Indexed: 11/27/2022] Open
Abstract
The conversion of branched-chain amino acids to branched-chain acids or alcohols is an important aspect of flavor in the food industry and is dependent on the Ehrlich pathway found in certain lactic acid bacteria. A key enzyme in the pathway, the 2-keto acid decarboxylase (KDC), is also of interest in biotechnology applications to produce small branched-chain alcohols that might serve as improved biofuels or other commodity feedstocks. This enzyme has been extensively studied in the model bacterium Lactococcus lactis, but is also found in other bacteria and higher organisms. In this report, distinct homologs of the L. lactis KDC originally annotated as pyruvate decarboxylases from Psychrobacter cryohalolentis K5 and P. arcticus 273-4 were cloned and characterized, confirming a related activity toward specific branched-chain 2-keto acids derived from branched-chain amino acids. Further, KDC activity was confirmed in intact cells and cell-free extracts of P. cryohalolentis K5 grown on both rich and defined media, indicating that the Ehrlich pathway may also be utilized in some psychrotrophs and psychrophiles. A comparison of the similarities and differences in the P. cryohalolentis K5 and P. arcticus 273-4 KDC activities to other bacterial KDCs is presented.
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Affiliation(s)
- Jiashi Wei
- Department of Bioproducts and Biosystems Engineering, University of Minnesota, St. Paul, MN, USA; Biotechnology Institute, University of Minnesota, St. Paul, MN, USA
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