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Salazar-Alekseyeva K, Herndl GJ, Baltar F. Influence of Salinity on the Extracellular Enzymatic Activities of Marine Pelagic Fungi. J Fungi (Basel) 2024; 10:152. [PMID: 38392824 PMCID: PMC10890631 DOI: 10.3390/jof10020152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 12/13/2023] [Accepted: 12/15/2023] [Indexed: 02/24/2024] Open
Abstract
Even though fungi are ubiquitous in the biosphere, the ecological knowledge of marine fungi remains rather rudimentary. Also, little is known about their tolerance to salinity and how it influences their activities. Extracellular enzymatic activities (EEAs) are widely used to determine heterotrophic microbes' enzymatic capabilities and substrate preferences. Five marine fungal species belonging to the most abundant pelagic phyla (Ascomycota and Basidiomycota) were grown under non-saline and saline conditions (0 g/L and 35 g/L, respectively). Due to their sensitivity and specificity, fluorogenic substrate analogues were used to determine hydrolytic activity on carbohydrates (β-glucosidase, β-xylosidase, and N-acetyl-β-D-glucosaminidase); peptides (leucine aminopeptidase and trypsin); lipids (lipase); organic phosphorus (alkaline phosphatase), and sulfur compounds (sulfatase). Afterwards, kinetic parameters such as maximum velocity (Vmax) and half-saturation constant (Km) were calculated. All fungal species investigated cleaved these substrates, but some species were more efficient than others. Moreover, most enzymatic activities were reduced in the saline medium, with some exceptions like sulfatase. In non-saline conditions, the average Vmax ranged between 208.5 to 0.02 μmol/g biomass/h, and in saline conditions, 88.4 to 0.02 μmol/g biomass/h. The average Km ranged between 1553.2 and 0.02 μM with no clear influence of salinity. Taken together, our results highlight a potential tolerance of marine fungi to freshwater conditions and indicate that changes in salinity (due to freshwater input or evaporation) might impact their enzymatic activities spectrum and, therefore, their contribution to the oceanic elemental cycles.
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Affiliation(s)
- Katherine Salazar-Alekseyeva
- Bio-Oceanography and Marine Biology Unit, Department of Functional and Evolutionary Ecology, University of Vienna, 1030 Vienna, Austria
- Bioprocess Engineering Group, Department of Agrotechnology and Food Sciences, Wageningen University and Research, 6708 WG Wageningen, The Netherlands
| | - Gerhard J Herndl
- Bio-Oceanography and Marine Biology Unit, Department of Functional and Evolutionary Ecology, University of Vienna, 1030 Vienna, Austria
- Department of Marine Microbiology and Biogeochemistry, Royal Netherlands Institute for Sea Research (NIOZ), University of Utrecht, 1790 AB Texel, The Netherlands
| | - Federico Baltar
- Bio-Oceanography and Marine Biology Unit, Department of Functional and Evolutionary Ecology, University of Vienna, 1030 Vienna, Austria
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2
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Extracellular Enzymatic Activities of Oceanic Pelagic Fungal Strains and the Influence of Temperature. J Fungi (Basel) 2022; 8:jof8060571. [PMID: 35736054 PMCID: PMC9225461 DOI: 10.3390/jof8060571] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/23/2022] [Accepted: 05/23/2022] [Indexed: 11/20/2022] Open
Abstract
Although terrestrial and aquatic fungi are well-known decomposers of organic matter, the role of marine fungi remains largely unknown. Recent studies based on omics suggest that marine fungi potentially play a major role in elemental cycles. However, there is very limited information on the diversity of extracellular enzymatic activities performed by pelagic fungi in the ocean and how these might be affected by community composition and/or critical environmental parameters such as temperature. In order to obtain information on the potential metabolic activity of marine fungi, extracellular enzymatic activities (EEA) were investigated. Five marine fungal species belonging to the most abundant pelagic phyla (Ascomycota and Basidiomycota) were grown at 5 °C and 20 °C, and fluorogenic enzymatic assays were performed using six substrate analogues for the hydrolysis of carbohydrates (β-glucosidase, β-xylosidase, and N-acetyl-β-D-glucosaminidase), amino acids (leucine aminopeptidase), and of organic phosphorus (alkaline phosphatase) and sulfur compounds (sulfatase). Remarkably, all fungal strains were capable of hydrolyzing all the offered substrates. However, the hydrolysis rate (Vmax) and half-saturation constant (Km) varied among the fungal strains depending on the enzyme type. Temperature had a strong impact on the EEAs, resulting in Q10 values of up to 6.1 and was species and substrate dependent. The observed impact of temperature on fungal EEA suggests that warming of the global ocean might alter the contribution of pelagic fungi in marine biogeochemical cycles.
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3
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A novel enzymatic tool for transferring GalNAc moiety onto challenging acceptors. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2020; 1868:140319. [DOI: 10.1016/j.bbapap.2019.140319] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 10/15/2019] [Accepted: 10/28/2019] [Indexed: 12/31/2022]
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4
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Bojarová P, Kulik N, Slámová K, Hubálek M, Kotik M, Cvačka J, Pelantová H, Křen V. Selective β-N-acetylhexosaminidase from Aspergillus versicolor—a tool for producing bioactive carbohydrates. Appl Microbiol Biotechnol 2019; 103:1737-1753. [DOI: 10.1007/s00253-018-9534-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 11/05/2018] [Accepted: 11/17/2018] [Indexed: 12/21/2022]
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5
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Škerlová J, Bláha J, Pachl P, Hofbauerová K, Kukačka Z, Man P, Pompach P, Novák P, Otwinowski Z, Brynda J, Vaněk O, Řezáčová P. Crystal structure of native β‐
N
‐acetylhexosaminidase isolated from
Aspergillus oryzae
sheds light onto its substrate specificity, high stability, and regulation by propeptide. FEBS J 2017; 285:580-598. [DOI: 10.1111/febs.14360] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 11/03/2017] [Accepted: 12/08/2017] [Indexed: 12/18/2022]
Affiliation(s)
- Jana Škerlová
- Institute of Organic Chemistry and Biochemistry The Czech Academy of Sciences Prague Czech Republic
- Institute of Molecular Genetics The Czech Academy of Sciences Prague Czech Republic
| | - Jan Bláha
- Department of Biochemistry Faculty of Science Charles University Prague Czech Republic
| | - Petr Pachl
- Institute of Organic Chemistry and Biochemistry The Czech Academy of Sciences Prague Czech Republic
| | - Kateřina Hofbauerová
- Institute of Microbiology The Czech Academy of Sciences Prague Czech Republic
- Institute of Physics Faculty of Mathematics and Physics Charles University Prague Czech Republic
| | - Zdeněk Kukačka
- Department of Biochemistry Faculty of Science Charles University Prague Czech Republic
- Institute of Microbiology The Czech Academy of Sciences Prague Czech Republic
| | - Petr Man
- Department of Biochemistry Faculty of Science Charles University Prague Czech Republic
- Institute of Microbiology The Czech Academy of Sciences Prague Czech Republic
| | - Petr Pompach
- Institute of Microbiology The Czech Academy of Sciences Prague Czech Republic
| | - Petr Novák
- Department of Biochemistry Faculty of Science Charles University Prague Czech Republic
- Institute of Microbiology The Czech Academy of Sciences Prague Czech Republic
| | | | - Jiří Brynda
- Institute of Organic Chemistry and Biochemistry The Czech Academy of Sciences Prague Czech Republic
- Institute of Molecular Genetics The Czech Academy of Sciences Prague Czech Republic
| | - Ondřej Vaněk
- Department of Biochemistry Faculty of Science Charles University Prague Czech Republic
| | - Pavlína Řezáčová
- Institute of Organic Chemistry and Biochemistry The Czech Academy of Sciences Prague Czech Republic
- Institute of Molecular Genetics The Czech Academy of Sciences Prague Czech Republic
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6
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Pompach P, Benada O, Rosůlek M, Darebná P, Hausner J, Růžička V, Volný M, Novák P. Protein Chips Compatible with MALDI Mass Spectrometry Prepared by Ambient Ion Landing. Anal Chem 2016; 88:8526-34. [DOI: 10.1021/acs.analchem.6b01366] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Petr Pompach
- Institute
of Microbiology, v.v.i., Czech Academy of Sciences, CZ-142 20 Prague, Czech Republic
- Faculty
of Science, Charles University in Prague, CZ-128 00 Prague, Czech Republic
- AffiPro, s.r.o., CZ-250 63 Mratin, Czech Republic
| | - Oldřich Benada
- Institute
of Microbiology, v.v.i., Czech Academy of Sciences, CZ-142 20 Prague, Czech Republic
- Faculty
of Science, J. E. Purkyně University in Ustí nad Labem, CZ-400 96 Ústí nad Labem, Czech Republic
| | - Michal Rosůlek
- Institute
of Microbiology, v.v.i., Czech Academy of Sciences, CZ-142 20 Prague, Czech Republic
- Faculty
of Science, Charles University in Prague, CZ-128 00 Prague, Czech Republic
| | - Petra Darebná
- Institute
of Microbiology, v.v.i., Czech Academy of Sciences, CZ-142 20 Prague, Czech Republic
- Faculty
of Science, Charles University in Prague, CZ-128 00 Prague, Czech Republic
| | - Jiří Hausner
- Institute
of Microbiology, v.v.i., Czech Academy of Sciences, CZ-142 20 Prague, Czech Republic
- Faculty
of Science, Charles University in Prague, CZ-128 00 Prague, Czech Republic
| | | | - Michael Volný
- Institute
of Microbiology, v.v.i., Czech Academy of Sciences, CZ-142 20 Prague, Czech Republic
- AffiPro, s.r.o., CZ-250 63 Mratin, Czech Republic
| | - Petr Novák
- Institute
of Microbiology, v.v.i., Czech Academy of Sciences, CZ-142 20 Prague, Czech Republic
- Faculty
of Science, Charles University in Prague, CZ-128 00 Prague, Czech Republic
- AffiPro, s.r.o., CZ-250 63 Mratin, Czech Republic
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7
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Kulik N, Slámová K, Ettrich R, Křen V. Computational study of β-N-acetylhexosaminidase from Talaromyces flavus, a glycosidase with high substrate flexibility. BMC Bioinformatics 2015; 16:28. [PMID: 25627923 PMCID: PMC4384365 DOI: 10.1186/s12859-015-0465-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Accepted: 01/15/2015] [Indexed: 01/17/2023] Open
Abstract
Background β-N-Acetylhexosaminidase (GH20) from the filamentous fungus Talaromyces flavus, previously identified as a prominent enzyme in the biosynthesis of modified glycosides, lacks a high resolution three-dimensional structure so far. Despite of high sequence identity to previously reported Aspergillus oryzae and Penicilluim oxalicum β-N-acetylhexosaminidases, this enzyme tolerates significantly better substrate modification. Understanding of key structural features, prediction of effective mutants and potential substrate characteristics prior to their synthesis are of general interest. Results Computational methods including homology modeling and molecular dynamics simulations were applied to shad light on the structure-activity relationship in the enzyme. Primary sequence analysis revealed some variable regions able to influence difference in substrate affinity of hexosaminidases. Moreover, docking in combination with consequent molecular dynamics simulations of C-6 modified glycosides enabled us to identify the structural features required for accommodation and processing of these bulky substrates in the active site of hexosaminidase from T. flavus. To access the reliability of predictions on basis of the reported model, all results were confronted with available experimental data that demonstrated the principal correctness of the predictions as well as the model. Conclusions The main variable regions in β-N-acetylhexosaminidases determining difference in modified substrate affinity are located close to the active site entrance and engage two loops. Differences in primary sequence and the spatial arrangement of these loops and their interplay with active site amino acids, reflected by interaction energies and dynamics, account for the different catalytic activity and substrate specificity of the various fungal and bacterial β-N-acetylhexosaminidases. Electronic supplementary material The online version of this article (doi:10.1186/s12859-015-0465-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Natallia Kulik
- Department of Structure and Function of Proteins, Institute of Nanobiology and Structural Biology of GCRC, Academy of Sciences of the Czech Republic, Zamek 136, 37333, Nove Hrady, Czech Republic.
| | - Kristýna Slámová
- Laboratory of Biotransformation, Institute of Microbiology, Academy of Sciences of the Czech Republic, Videnska 1083, 14220, Praha 4, Czech Republic.
| | - Rüdiger Ettrich
- Department of Structure and Function of Proteins, Institute of Nanobiology and Structural Biology of GCRC, Academy of Sciences of the Czech Republic, Zamek 136, 37333, Nove Hrady, Czech Republic. .,Faculty of Sciences, University of South Bohemia in Ceske Budejovice, Zamek 136, 37333, Nove Hrady, Czech Republic.
| | - Vladimír Křen
- Laboratory of Biotransformation, Institute of Microbiology, Academy of Sciences of the Czech Republic, Videnska 1083, 14220, Praha 4, Czech Republic.
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8
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Ryšlavá H, Valenta R, Hýsková V, Křížek T, Liberda J, Coufal P. Purification and enzymatic characterization of tobacco leaf β-N-acetylhexosaminidase. Biochimie 2014; 107 Pt B:263-9. [PMID: 25242193 DOI: 10.1016/j.biochi.2014.09.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Accepted: 09/05/2014] [Indexed: 01/17/2023]
Abstract
The kinetic properties of β-N-acetylhexosaminidase purified from tobacco (Nicotiana tabacum L.) leaves have been investigated. In addition to chromogenic pNP derivates, N,N'-diacetylchitobiose and N,N',N″-triacetylchitotriose were also used as substrates of β-N-acetylhexosaminidase. The highest reaction rate and the affinity for the substrate were observed for pNP-GlcNAc; however, an excess of this substrate inhibits the reaction. The reaction rate with pNP-GalNAc as the substrate was found to be about 85% of that obtained with pNP-GlcNAc. The hydrolysis of acetylated chitooligomers by β-N-acetylhexosaminidase followed by separation and quantification using capillary electrophoresis was slower compared to pNP-GlcNAc. The pH optimum of β-N-acetylhexosaminidase for individual substrates was found at 4.3-5.0 and the temperature optimum was 50-55 °C. Gel permeation chromatography and red native electrophoresis determined the relative molecular weight as 280 000 and the isoelectric point as 5.3. The inhibition of β-N-acetylhexosaminidase by monosaccharides GlcN, GalN, GlcNAc, GalNAc in combination with substrates pNP-GlcNAc and pNP-GalNAc was studied and the type of inhibition and the inhibition constants were determined.
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Affiliation(s)
- Helena Ryšlavá
- Department of Biochemistry, Faculty of Science, Charles University, Hlavova 2030, Prague 2 128 40, Czech Republic.
| | - Robert Valenta
- Department of Biochemistry, Faculty of Science, Charles University, Hlavova 2030, Prague 2 128 40, Czech Republic
| | - Veronika Hýsková
- Department of Biochemistry, Faculty of Science, Charles University, Hlavova 2030, Prague 2 128 40, Czech Republic
| | - Tomáš Křížek
- Department of Analytical Chemistry, Faculty of Science, Charles University, Hlavova 2030, Prague 2 128 40, Czech Republic
| | - Jiří Liberda
- Department of Biochemistry, Faculty of Science, Charles University, Hlavova 2030, Prague 2 128 40, Czech Republic
| | - Pavel Coufal
- Department of Analytical Chemistry, Faculty of Science, Charles University, Hlavova 2030, Prague 2 128 40, Czech Republic
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9
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Thi NN, Offen WA, Shareck F, Davies GJ, Doucet N. Structure and Activity of the Streptomyces coelicolor A3(2) β-N-Acetylhexosaminidase Provides Further Insight into GH20 Family Catalysis and Inhibition. Biochemistry 2014; 53:1789-800. [DOI: 10.1021/bi401697j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Nhung Nguyen Thi
- INRS-Institut
Armand-Frappier, Université du Québec, 531 Boul. des Prairies, Laval, Québec H7V 1B7, Canada
- PROTEO,
the Québec Network for Research on Protein Function, Structure,
and Engineering, 1045
Avenue de la Médecine, Université Laval, Québec, Québec G1V 0A6, Canada
- GRASP,
the Groupe de Recherche Axé sur la Structure des Protéines,
3649 Promenade Sir William Osler, McGill University, Montréal, Québec H3G 0B1, Canada
- Military
Institute of Science and Technology, 17 Hoang Sam, Hanoi, Vietnam
- Vietnam
Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam
| | - Wendy A. Offen
- Structural
Biology Laboratory, Department of Chemistry, University of York, York YO10 5DD, United Kingdom
| | - François Shareck
- INRS-Institut
Armand-Frappier, Université du Québec, 531 Boul. des Prairies, Laval, Québec H7V 1B7, Canada
| | - Gideon J. Davies
- Structural
Biology Laboratory, Department of Chemistry, University of York, York YO10 5DD, United Kingdom
| | - Nicolas Doucet
- INRS-Institut
Armand-Frappier, Université du Québec, 531 Boul. des Prairies, Laval, Québec H7V 1B7, Canada
- PROTEO,
the Québec Network for Research on Protein Function, Structure,
and Engineering, 1045
Avenue de la Médecine, Université Laval, Québec, Québec G1V 0A6, Canada
- GRASP,
the Groupe de Recherche Axé sur la Structure des Protéines,
3649 Promenade Sir William Osler, McGill University, Montréal, Québec H3G 0B1, Canada
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10
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Ryšlavá H, Doubnerová V, Kavan D, Vaněk O. Effect of posttranslational modifications on enzyme function and assembly. J Proteomics 2013; 92:80-109. [PMID: 23603109 DOI: 10.1016/j.jprot.2013.03.025] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2012] [Revised: 03/01/2013] [Accepted: 03/11/2013] [Indexed: 12/22/2022]
Abstract
The detailed examination of enzyme molecules by mass spectrometry and other techniques continues to identify hundreds of distinct PTMs. Recently, global analyses of enzymes using methods of contemporary proteomics revealed widespread distribution of PTMs on many key enzymes distributed in all cellular compartments. Critically, patterns of multiple enzymatic and nonenzymatic PTMs within a single enzyme are now functionally evaluated providing a holistic picture of a macromolecule interacting with low molecular mass compounds, some of them being substrates, enzyme regulators, or activated precursors for enzymatic and nonenzymatic PTMs. Multiple PTMs within a single enzyme molecule and their mutual interplays are critical for the regulation of catalytic activity. Full understanding of this regulation will require detailed structural investigation of enzymes, their structural analogs, and their complexes. Further, proteomics is now integrated with molecular genetics, transcriptomics, and other areas leading to systems biology strategies. These allow the functional interrogation of complex enzymatic networks in their natural environment. In the future, one might envisage the use of robust high throughput analytical techniques that will be able to detect multiple PTMs on a global scale of individual proteomes from a number of carefully selected cells and cellular compartments. This article is part of a Special Issue entitled: Posttranslational Protein modifications in biology and Medicine.
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Affiliation(s)
- Helena Ryšlavá
- Department of Biochemistry, Faculty of Science, Charles University in Prague, Hlavova 8, CZ-12840 Prague 2, Czech Republic.
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11
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Offline and online capillary electrophoresis enzyme assays of β-N-acetylhexosaminidase. Anal Bioanal Chem 2013; 405:2425-34. [DOI: 10.1007/s00216-012-6607-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Revised: 11/02/2012] [Accepted: 11/26/2012] [Indexed: 10/27/2022]
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12
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Magni C, Sessa F, Tedeschi G, Negri A, Scarafoni A, Consonni A, Duranti M. Identification in lupin seed of a serine-endopeptidase activity cleaving between twin arginine pairs and causing limited proteolysis of seed storage proteins. MOLECULAR PLANT 2012; 5:1011-9. [PMID: 22217442 DOI: 10.1093/mp/ssr116] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The occurrence of twin-arginine motifs (-R-R-) in the amino acid sequences of animal pro-proteins frequently defines the cleavage site(s) for their structural/functional maturation. No information is available on the presence and possible biological meaning of these motifs in the seed storage proteins. In this work, a novel endopeptidase activity with cleavage specificity to twin-arginine pairs has been detected in mature dry Lupinus albus seeds. The endopeptidase was tested with a number of endogenous and exogenous protein substrates, which were selected according to the presence of one or more twin-arginine residue motifs in their amino acid sequences. The observed hydrolysis patterns were limited and highly specific. Partial proteolysis led to stable polypeptide fragments that were characterized by 1- and 2-D electrophoresis. Selected polypeptides were submitted to N-terminal amino acid sequencing and mass spectrometry analyses. These approaches, supported by bioinformatic analysis of the available sequences, allowed the conclusion that the polypeptide cleavage events had occurred at the peptide bonds comprised between twin-arginine residue pairs with all tested protein substrates. The endopeptidase activity was inhibited by 4-(2-AminoEthyl)Benzene-Sulphonyl Fluoride hydrochloride (AEBSF), leupeptin, and serine proteinase protein inhibitors, while it was not affected by pepstatin, trans-Epoxysuccinyl-L-leucylamido(4-guanidino)butane (E64), and ethylenediaminetetraacetic acid (EDTA), thus qualifying the Arg-Arg cleaving enzyme as a serine endopeptidase. The structural features of storage proteins from lupin and other legume seeds strongly support the hypothesis that the occurrence of an endopeptidase activity cleaving -R-R- bonds may be functional to facilitate their degradation at germination and possibly generate polypeptide fragments with specific biological activity.
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Affiliation(s)
- Chiara Magni
- Department of AgriFood Molecular Sciences, Università degli Studi di Milano, Via Celoria 2, 20133 Milano, Italy
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13
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Slámová K, Bojarová P, Gerstorferová D, Fliedrová B, Hofmeisterová J, Fiala M, Pompach P, Křen V. Sequencing, cloning and high-yield expression of a fungal β-N-acetylhexosaminidase in Pichia pastoris. Protein Expr Purif 2012; 82:212-7. [PMID: 22266368 DOI: 10.1016/j.pep.2012.01.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Revised: 01/02/2012] [Accepted: 01/04/2012] [Indexed: 11/25/2022]
Abstract
The β-N-acetylhexosaminidase from Talaromyces flavus has a remarkable synthetic ability, processing even carbohydrates with various functionalities. Its broader use is partially hampered by low-yield production in the native fungus. Here, we present an optimized 3-day production of this enzyme in the eukaryotic host of Pichia pastoris, in ca 10-fold higher volume activity (10 U/ml) and close-to-perfect purity (one chromatographic step needed). Importantly, the recombinant enzyme features the same biochemical and catalytic properties, including the syntheses with derivatized carbohydrate substrates. This is the first example of the overexpression of a fungal β-N-acetylhexosaminidase by a single-cell producer in liquid medium. It represents a promising solution for wider biotechnological applications of this outstanding enzyme.
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Affiliation(s)
- Kristýna Slámová
- Institute of Microbiology, Center for Biocatalysis and Biotransformation, Academy of Sciences of the Czech Republic, Vídeňská 1083, CZ 14220, Prague 4, Czech Republic
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14
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Drozdová A, Bojarová P, Křenek K, Weignerová L, Henßen B, Elling L, Christensen H, Jensen HH, Pelantová H, Kuzma M, Bezouška K, Krupová M, Adámek D, Slámová K, Křen V. Enzymatic synthesis of dimeric glycomimetic ligands of NK cell activation receptors. Carbohydr Res 2011; 346:1599-609. [DOI: 10.1016/j.carres.2011.04.043] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Revised: 04/20/2011] [Accepted: 04/27/2011] [Indexed: 10/18/2022]
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15
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Ryšlavá H, Kalendová A, Doubnerová V, Skočdopol P, Kumar V, Kukačka Z, Pompach P, Vaněk O, Slámová K, Bojarová P, Kulik N, Ettrich R, Křen V, Bezouška K. Enzymatic characterization and molecular modeling of an evolutionarily interesting fungal β-N-acetylhexosaminidase. FEBS J 2011; 278:2469-84. [DOI: 10.1111/j.1742-4658.2011.08173.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Vaněk O, Brynda J, Hofbauerová K, Kukačka Z, Pachl P, Bezouška K, Řezáčová P. Crystallization and diffraction analysis of β-N-acetylhexosaminidase from Aspergillus oryzae. Acta Crystallogr Sect F Struct Biol Cryst Commun 2011; 67:498-503. [PMID: 21505251 PMCID: PMC3080160 DOI: 10.1107/s1744309111004945] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2010] [Accepted: 02/09/2011] [Indexed: 11/10/2022]
Abstract
Fungal β-N-acetylhexosaminidases are enzymes that are used in the chemoenzymatic synthesis of biologically interesting oligosaccharides. The enzyme from Aspergillus oryzae was produced and purified from its natural source and crystallized using the hanging-drop vapour-diffusion method. Diffraction data from two crystal forms (primitive monoclinic and primitive tetragonal) were collected to resolutions of 3.2 and 2.4 Å, respectively. Electrophoretic and quantitative N-terminal protein-sequencing analyses confirmed that the crystals are formed by a complete biologically active enzyme consisting of a glycosylated catalytic unit and a noncovalently attached propeptide.
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Affiliation(s)
- Ondřej Vaněk
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Vídeňská 1083, 14220 Prague, Czech Republic
- Department of Biochemistry, Faculty of Science, Charles University in Prague, Hlavova 8, 12840 Prague, Czech Republic
| | - Jiří Brynda
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610 Prague, Czech Republic
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Vídeňská 1083, 14220 Prague, Czech Republic
| | - Kateřina Hofbauerová
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Vídeňská 1083, 14220 Prague, Czech Republic
| | - Zdeněk Kukačka
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Vídeňská 1083, 14220 Prague, Czech Republic
- Department of Biochemistry, Faculty of Science, Charles University in Prague, Hlavova 8, 12840 Prague, Czech Republic
| | - Petr Pachl
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Vídeňská 1083, 14220 Prague, Czech Republic
| | - Karel Bezouška
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Vídeňská 1083, 14220 Prague, Czech Republic
- Department of Biochemistry, Faculty of Science, Charles University in Prague, Hlavova 8, 12840 Prague, Czech Republic
| | - Pavlína Řezáčová
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610 Prague, Czech Republic
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Vídeňská 1083, 14220 Prague, Czech Republic
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17
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Yang Y, Liu T, Yang Y, Wu Q, Yang Q, Yu B. Synthesis, Evaluation, and Mechanism of N,N,N-Trimethyl-D-glucosamine-(1→4)-chitooligosaccharides as Selective Inhibitors of Glycosyl Hydrolase Family 20 β-N-Acetyl-D-hexosaminidases. Chembiochem 2010; 12:457-67. [DOI: 10.1002/cbic.201000561] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2010] [Indexed: 11/09/2022]
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18
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Slámová K, Bojarová P, Petrásková L, Křen V. β-N-Acetylhexosaminidase: What's in a name…? Biotechnol Adv 2010; 28:682-93. [DOI: 10.1016/j.biotechadv.2010.04.004] [Citation(s) in RCA: 123] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2010] [Revised: 04/17/2010] [Accepted: 04/24/2010] [Indexed: 01/28/2023]
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19
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Lunetta JM, Johnson SM, Pappagianis D. Molecular cloning, characterization and expression analysis of two β-N-acetylhexosaminidase homologs ofCoccidioides posadasii. Med Mycol 2010; 48:744-56. [DOI: 10.3109/13693780903496609] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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20
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Pompach P, Man P, Kavan D, Hofbauerová K, Kumar V, Bezouska K, Havlícek V, Novák P. Modified electrophoretic and digestion conditions allow a simplified mass spectrometric evaluation of disulfide bonds. JOURNAL OF MASS SPECTROMETRY : JMS 2009; 44:1571-1578. [PMID: 19551705 DOI: 10.1002/jms.1609] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Proper formation of disulfide bonds in proteins is a prerequisite to their stability and function. Information on disulfide pattern may therefore serve as an indication of the proper folding of recombinant proteins, and can also be used in protein homology modeling for the purpose of structure refinement. Protein handling and digestion at basic pH leads to disulfide bond scrambling. That is why the samples are usually treated and digested at low pH where no scrambling occurs. Unfortunately, the specific proteases used in protein research are active at high pH values. Here, we present a complete sample handling protocol, which allows processing of disulfide containing proteins at basic pH. We modified the standard SDS gel electrophoresis and protein digestion conditions by the addition of an oxidative agent, cystamine. This modification prevented disulfide scrambling, which we otherwise observed in the samples handled according to the general protocol. Lysozyme from hen egg was used as a model protein for the development of the method. We then applied our protocol to human leukocyte antigen CD69, for which the disulfide bonding is known, but only for its monomeric form. In addition, the disulfide arrangement was then 'de novo' identified in the recombinant murine leukocyte receptor NKR-P1A and in the larger glycosylated proteins beta-N-acetylhexosaminidases from Aspergillus oryzae and Penicillium oxalicum.
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Affiliation(s)
- Petr Pompach
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
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