1
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Trp residue at subsite − 5 plays a critical role in the substrate binding of two protistan GH26 β-mannanases from a termite hindgut. Appl Microbiol Biotechnol 2018; 102:1737-1747. [DOI: 10.1007/s00253-017-8726-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 11/28/2017] [Accepted: 12/11/2017] [Indexed: 10/18/2022]
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2
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Borisova AS, Reddy SK, Ivanen DR, Bobrov KS, Eneyskaya EV, Rychkov GN, Sandgren M, Stålbrand H, Sinnott ML, Kulminskaya AA, Shabalin KA. The method of integrated kinetics and its applicability to the exo-glycosidase-catalyzed hydrolysis of p-nitrophenyl glycosides. Carbohydr Res 2015; 412:43-9. [DOI: 10.1016/j.carres.2015.03.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Revised: 03/23/2015] [Accepted: 03/27/2015] [Indexed: 10/23/2022]
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3
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Biochemical characterization of a thermophilic β-mannanase from Talaromyces leycettanus JCM12802 with high specific activity. Appl Microbiol Biotechnol 2014; 99:1217-28. [DOI: 10.1007/s00253-014-5979-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2014] [Revised: 07/21/2014] [Accepted: 07/22/2014] [Indexed: 11/27/2022]
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4
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Wang Y, Vilaplana F, Brumer H, Aspeborg H. Enzymatic characterization of a glycoside hydrolase family 5 subfamily 7 (GH5_7) mannanase from Arabidopsis thaliana. PLANTA 2014; 239:653-65. [PMID: 24327260 PMCID: PMC3928506 DOI: 10.1007/s00425-013-2005-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Accepted: 12/01/2013] [Indexed: 05/16/2023]
Abstract
Each plant genome contains a repertoire of β-mannanase genes belonging to glycoside hydrolase family 5 subfamily 7 (GH5_7), putatively involved in the degradation and modification of various plant mannan polysaccharides, but very few have been characterized at the gene product level. The current study presents recombinant production and in vitro characterization of AtMan5-1 as a first step towards the exploration of the catalytic capacity of Arabidopsis thaliana β-mannanase. The target enzyme was expressed in both E. coli (AtMan5-1e) and P. pastoris (AtMan5-1p). The main difference between the two forms was a higher observed thermal stability for AtMan5-1p, presumably due to glycosylation of that particular variant. AtMan5-1 displayed optimal activity at pH 5 and 35 °C and hydrolyzed polymeric carob galactomannan, konjac glucomannan, and spruce galactoglucomannan as well as oligomeric mannopentaose and mannohexaose. However, the galactose-rich and highly branched guar gum was not as efficiently degraded. AtMan5-1 activity was enhanced by Co(2+) and inhibited by Mn(2+). The catalytic efficiency values for carob galactomannan were 426.8 and 368.1 min(-1) mg(-1) mL for AtMan5-1e and AtMan5-1p, respectively. Product analysis of AtMan5-1p suggested that at least five substrate-binding sites were required for manno-oligosaccharide hydrolysis, and that the enzyme also can act as a transglycosylase.
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Affiliation(s)
- Yang Wang
- Division of Glycoscience, School of Biotechnology, KTH Royal Institute of Technology, AlbaNova University Centre, 106 91 Stockholm, Sweden
- Division of Industrial Biotechnology, School of Biotechnology, KTH Royal Institute of Technology, AlbaNova University Centre, 106 91 Stockholm, Sweden
| | - Francisco Vilaplana
- Division of Glycoscience, School of Biotechnology, KTH Royal Institute of Technology, AlbaNova University Centre, 106 91 Stockholm, Sweden
- Wallenberg Wood Science Centre, Royal Institute of Technology (KTH), 100 44 Stockholm, Sweden
| | - Harry Brumer
- Division of Glycoscience, School of Biotechnology, KTH Royal Institute of Technology, AlbaNova University Centre, 106 91 Stockholm, Sweden
- Michael Smith Laboratories and Department of Chemistry, University of British Columbia, 2185 East Mall, Vancouver, V6T 1Z4 Canada
| | - Henrik Aspeborg
- Division of Glycoscience, School of Biotechnology, KTH Royal Institute of Technology, AlbaNova University Centre, 106 91 Stockholm, Sweden
- Division of Industrial Biotechnology, School of Biotechnology, KTH Royal Institute of Technology, AlbaNova University Centre, 106 91 Stockholm, Sweden
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Couturier M, Roussel A, Rosengren A, Leone P, Stålbrand H, Berrin JG. Structural and biochemical analyses of glycoside hydrolase families 5 and 26 β-(1,4)-mannanases from Podospora anserina reveal differences upon manno-oligosaccharide catalysis. J Biol Chem 2013; 288:14624-14635. [PMID: 23558681 DOI: 10.1074/jbc.m113.459438] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The microbial deconstruction of the plant cell wall is a key biological process that is of increasing importance with the development of a sustainable biofuel industry. The glycoside hydrolase families GH5 (PaMan5A) and GH26 (PaMan26A) endo-β-1,4-mannanases from the coprophilic ascomycete Podospora anserina contribute to the enzymatic degradation of lignocellulosic biomass. In this study, P. anserina mannanases were further subjected to detailed comparative analysis of their substrate specificities, active site organization, and transglycosylation capacity. Although PaMan5A displays a classical mode of action, PaMan26A revealed an atypical hydrolysis pattern with the release of mannotetraose and mannose from mannopentaose resulting from a predominant binding mode involving the -4 subsite. The crystal structures of PaMan5A and PaMan26A were solved at 1.4 and 2.85 Å resolution, respectively. Analysis of the PaMan26A structure supported strong interaction with substrate at the -4 subsite mediated by two aromatic residues Trp-244 and Trp-245. The PaMan26A structure appended to its family 35 carbohydrate binding module revealed a short and proline-rich rigid linker that anchored together the catalytic and the binding modules.
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Affiliation(s)
- Marie Couturier
- INRA, UMR1163 BCF, Aix Marseille Université, Polytech Marseille, F-13288 Marseille, France
| | - Alain Roussel
- Architecture et Fonction des Macromolécules Biologiques, Aix Marseille Université, CNRS UMR7257, F-13288 Marseille, France
| | - Anna Rosengren
- Department of Biochemistry and Structural Biology, Lund University, P. O. Box 124, S-221 00, Lund, Sweden
| | - Philippe Leone
- Architecture et Fonction des Macromolécules Biologiques, Aix Marseille Université, CNRS UMR7257, F-13288 Marseille, France
| | - Henrik Stålbrand
- Department of Biochemistry and Structural Biology, Lund University, P. O. Box 124, S-221 00, Lund, Sweden
| | - Jean-Guy Berrin
- INRA, UMR1163 BCF, Aix Marseille Université, Polytech Marseille, F-13288 Marseille, France.
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6
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Expression and characterization of a Bifidobacterium adolescentis beta-mannanase carrying mannan-binding and cell association motifs. Appl Environ Microbiol 2012; 79:133-40. [PMID: 23064345 DOI: 10.1128/aem.02118-12] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
The gene encoding β-mannanase (EC 3.2.1.78) BaMan26A from the bacterium Bifidobacterium adolescentis (living in the human gut) was cloned and the gene product characterized. The enzyme was found to be modular and to contain a putative signal peptide. It possesses a catalytic module of the glycoside hydrolase family 26, a predicted immunoglobulin-like module, and two putative carbohydrate-binding modules (CBMs) of family 23. The enzyme is likely cell attached either by the sortase mechanism (LPXTG motif) or via a C-terminal transmembrane helix. The gene was expressed in Escherichia coli without the native signal peptide or the cell anchor. Two variants were made: one containing all four modules, designated BaMan26A-101K, and one truncated before the CBMs, designated BaMan26A-53K. BaMan26A-101K, which contains the CBMs, showed an affinity to carob galactomannan having a dissociation constant of 0.34 μM (8.8 mg/liter), whereas BaMan26A-53K did not bind, showing that at least one of the putative CBMs of family 23 is mannan binding. For BaMan26A-53K, k(cat) was determined to be 444 s(-1) and K(m) 21.3 g/liter using carob galactomannan as the substrate at the optimal pH of 5.3. Both of the enzyme variants hydrolyzed konjac glucomannan, as well as carob and guar gum galactomannans to a mixture of oligosaccharides. The dominant product from ivory nut mannan was found to be mannotriose. Mannobiose and mannotetraose were produced to a lesser extent, as shown by high-performance anion-exchange chromatography. Mannobiose was not hydrolyzed, and mannotriose was hydrolyzed at a significantly lower rate than the longer oligosaccharides.
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Rosengren A, Hägglund P, Anderson L, Pavon-Orozco P, Peterson-Wulff R, Nerinckx W, Stålbrand H. The role of subsite +2 of the Trichoderma reesei β-mannanase TrMan5A in hydrolysis and transglycosylation. BIOCATAL BIOTRANSFOR 2012. [DOI: 10.3109/10242422.2012.674726] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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8
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Dilokpimol A, Nakai H, Gotfredsen CH, Baumann MJ, Nakai N, Abou Hachem M, Svensson B. Recombinant production and characterisation of two related GH5 endo-β-1,4-mannanases from Aspergillus nidulans FGSC A4 showing distinctly different transglycosylation capacity. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2011; 1814:1720-9. [PMID: 21867780 DOI: 10.1016/j.bbapap.2011.08.003] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Revised: 07/30/2011] [Accepted: 08/01/2011] [Indexed: 10/17/2022]
Abstract
The glycoside hydrolase family 5 (GH5) endo-β-1,4-mannanases ManA and ManC from Aspergillus nidulans FGSC A4 were produced in Pichia pastoris X33 and purified in high yields of 120 and 145mg/L, respectively, from the culture supernatants. Both enzymes showed increasing catalytic efficiency (k(cat)/K(M)) towards β-1,4 manno-oligosaccharides with the degree of polymerisation (DP) from 4 to 6 and also hydrolysed konjac glucomannan, guar gum and locust bean gum galactomannans. ManC had up to two-fold higher catalytic efficiency for DP 5 and 6 manno-oligosaccharides and also higher activity than ManA towards mannans. Remarkably, ManC compared to ManA transglycosylated mannotetraose with formation of longer β-1,4 manno-oligosaccharides 8-fold more efficiently and was able to use mannotriose, melezitose and isomaltotriose out of 36 tested acceptors resulting in novel penta- and hexasaccharides, whereas ManA used only mannotriose as acceptor. ManA and ManC share 39% sequence identity and homology modelling suggesting that they have very similar substrate interactions at subsites +1 and +2 except that ManC Trp283 at subsite +1 corresponded to Ser289 in ManA. Site-directed mutagenesis to ManA S289W lowered K(M) for manno-oligosaccharides by 30-45% and increased transglycosylation yield by 50% compared to wild-type. Conversely, K(M) for ManC W283S was increased, the transglycosylation yield was reduced by 30-45% and furthermore activity towards mannans decreased below that of ManA. This first mutational analysis in subsite +1 of GH5 endo-β-1,4-mannanases indicated that Trp283 in ManC participates in discriminating between mannan substrates with different extent of branching and has a role in transglycosylation and substrate affinity.
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Affiliation(s)
- Adiphol Dilokpimol
- Department of Systems Biology, Technical University of Denmark, Lyngby, Denmark
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Simpson AJ, McNally DJ, Simpson MJ. NMR spectroscopy in environmental research: from molecular interactions to global processes. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2011; 58:97-175. [PMID: 21397118 DOI: 10.1016/j.pnmrs.2010.09.001] [Citation(s) in RCA: 114] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2010] [Accepted: 09/17/2010] [Indexed: 05/30/2023]
Affiliation(s)
- André J Simpson
- Environmental NMR Center, Department of Chemistry, University of Toronto, Ontario, Canada.
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Hekmat O, Lo Leggio L, Rosengren A, Kamarauskaite J, Kolenova K, Stålbrand H. Rational Engineering of Mannosyl Binding in the Distal Glycone Subsites of Cellulomonas fimi Endo-β-1,4-mannanase: Mannosyl Binding Promoted at Subsite −2 and Demoted at Subsite −3,. Biochemistry 2010; 49:4884-96. [DOI: 10.1021/bi100097f] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Omid Hekmat
- Department of Biochemistry, Center for Chemistry and Chemical Engineering, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Leila Lo Leggio
- Biophysical Chemistry Group, Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Anna Rosengren
- Department of Biochemistry, Center for Chemistry and Chemical Engineering, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Jurate Kamarauskaite
- Biophysical Chemistry Group, Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
- Department of Biology, University of Copenhagen, Ole Maaløes Vej 5, DK-2200 Copenhagen, Denmark
| | - Katarina Kolenova
- Department of Biochemistry, Center for Chemistry and Chemical Engineering, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Henrik Stålbrand
- Department of Biochemistry, Center for Chemistry and Chemical Engineering, Lund University, Box 124, SE-221 00 Lund, Sweden
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