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Lima LMS, Okamoto DN, Passarini MRZ, Gonçalves SS, Goldman GH, Silveira MAV, Ramos PL, Cruz JB, Juliano M, Marcondes MFM, Vasconcellos SP. Enzymatic diversity of filamentous fungi isolated from forest soil incremented by sugar cane solid waste. Environ Technol 2022; 43:3037-3046. [PMID: 33826477 DOI: 10.1080/09593330.2021.1914179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 03/30/2021] [Indexed: 06/12/2023]
Abstract
Fungi are natural degraders of organic matter which can produce enzymes for many industrial and biotechnological applications. In this context, crude enzymatic extracts of fungal isolates were evaluated regarding their hydrolytic and ligninolytic abilities. The fungal strains were isolated from soil samples from Atlantic Rain Forest Park incremented with sugar cane biomass (filter cake), which allowed the selection of efficient lignocellulolytic enzymes. A total of 190 fungi were isolated and evaluated by endocellulase screenings. Thirteen fungi were selected about their hydrolytic and ligninolytic abilities. Among them, three isolates showed xylanolytic activity. Eleven of the isolates were selected by their cellulolytic abilities. Proteolytic enzymes were also detected for three fungi, allowing the classification as metalloprotease and serine protease. The isolates SPZPF3_47 (Mucor sp.), SPZPF1_129 (Byssochlamys nivea) and SPZPF1_141 (Paecilomyces saturatus) were selected for further investigation on their lignin peroxidase abilities. KM, Vmax and kcat apparent for lignin peroxidases were also determined. The strain of Mucor sp. (SPZPF3_47) was highlighted since this fungal genus was not well described about its isolation in the adopted conditions in our study, and showing ligninolytic abilities.
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Affiliation(s)
- Lidiane M S Lima
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Debora N Okamoto
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Michel R Z Passarini
- Latin American Institute of Life and Natural Sciences, Universidade Federal da Integração Latino-Americana, Foz do Iguaçu, Brazil
| | - Sarah S Gonçalves
- Health Science Center, Universidade Federal do Espírito Santo, Espírito Santo, Brazil
| | - Gustavo H Goldman
- Faculty of Pharmaceutical Sciences of Ribeirão Preto, Universidade de São Paulo, São Paulo, Brazil
| | - Marghuel A V Silveira
- Department of Biophysics, Paulista School of Medicine, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - João B Cruz
- São Paulo Zoo Park Foundation, São Paulo, Brazil
| | - Maria Juliano
- Department of Biophysics, Paulista School of Medicine, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Marcelo F M Marcondes
- Department of Biophysics, Paulista School of Medicine, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Suzan P Vasconcellos
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Universidade Federal de São Paulo, São Paulo, Brazil
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Fernandes GC, Sierra EGM, Brear P, Pereira MR, Lemos EGM. From Data Mining of Chitinophaga sp. Genome to Enzyme Discovery of a Hyperthermophilic Metallocarboxypeptidase. Microorganisms 2021; 9:393. [PMID: 33673011 PMCID: PMC7918520 DOI: 10.3390/microorganisms9020393] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 02/09/2021] [Accepted: 02/11/2021] [Indexed: 01/24/2023] Open
Abstract
For several centuries, microorganisms and enzymes have been used for many different applications. Although many enzymes with industrial applications have already been reported, different screening technologies, methods and approaches are constantly being developed in order to allow the identification of enzymes with even more interesting applications. In our work, we have performed data mining on the Chitinophaga sp. genome, a gram-negative bacterium isolated from a bacterial consortium of sugarcane bagasse isolated from an ethanol plant. The analysis of 8 Mb allowed the identification of the chtcp gene, previously annotated as putative Cht4039. The corresponding codified enzyme, denominated as ChtCP, showed the HEXXH conserved motif of family M32 from thermostable carboxypeptidases. After expression in E. coli, the recombinant enzyme was characterized biochemically. ChtCP showed the highest activity versus benziloxicarbonil Ala-Trp at pH 7.5, suggesting a preference for hydrophobic substrates. Surprisingly, the highest activity of ChtCP observed was between 55 °C and 75 °C, and 62% activity was still displayed at 100 °C. We observed that Ca2+, Ba2+, Mn2+ and Mg2+ ions had a positive effect on the activity of ChtCP, and an increase of 30 °C in the melting temperature was observed in the presence of Co2+. These features together with the structure of ChtCP at 1.2 Å highlight the relevance of ChtCP for further biotechnological applications.
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Affiliation(s)
- Gabriela Cabral Fernandes
- Department of Technology, São Paulo State University (UNESP), Jaboticabal, São Paulo State 14884-900, Brazil; (G.C.F.); (E.G.M.S.)
- Graduate Program in Agricultural and Livestock Microbiology, São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo State 14884-900, Brazil
| | - Elwi Guillermo Machado Sierra
- Department of Technology, São Paulo State University (UNESP), Jaboticabal, São Paulo State 14884-900, Brazil; (G.C.F.); (E.G.M.S.)
- Laboratorio de Investigación en Microbiología, Facultad de Ciencias Básicas y Biomédicas, Universidad Simón Bolívar, Barranquilla 080002, Colombia
| | - Paul Brear
- Department of Biochemistry, University of Cambridge, Cambridge CB21GA, UK;
| | - Mariana Rangel Pereira
- Department of Biochemistry, University of Cambridge, Cambridge CB21GA, UK;
- CAPES Foundation, Ministry of Education of Brazil, Brasília-DF 70.040-02, Brazil
| | - Eliana G. M. Lemos
- Department of Technology, São Paulo State University (UNESP), Jaboticabal, São Paulo State 14884-900, Brazil; (G.C.F.); (E.G.M.S.)
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de Lima EE, Franco DG, Galeano RMS, Guimarães NCDA, Masui DC, Giannesi GC, Zanoelo FF. Biochemical characterization of a partially purified protease from Aspergillus terreus 7461 and its application as an environmentally friendly dehairing agent for leather industry. Prep Biochem Biotechnol 2020; 51:320-330. [PMID: 32903132 DOI: 10.1080/10826068.2020.1815058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Proteases can be used in several biotechnological processes including detergent, food and leather industries. In the leather industry, dehairing is carried out by chemicals, which pollute the environment. Therefore, to make the hair removal process environmentally friendly, a protease produced by Aspergillus terreus has been purified, biochemically characterized and had an efficient ability to remove hair from bovine leather. The protease was produced using 1% wheat bran and was purified 2.3-fold using two chromatographic steps showing a molecular weight of 90 kDa. Optimal temperature and pH were 50 °C and 6.5, respectively. Thermal stability was up to 1 h at 50 °C. Protease was stable to detergents like Tween 80 and to organic solvents. The activity was activated by Ca2+ and inhibited by Hg2+ and Cu2+. The enzyme was classified as serine protease, by the inhibition by PMSF and was stable to reducing agents. It hydrolyzed casein, azocasein, BSA, egg albumin and BTpNA. The Km and Vmax values were 0.65 ± 0.03 mg/mL and 3.66 ± 0.18 μmol/min, respectively. Remarkable properties about temperature, pH, stability to detergents and reducing agents ensure that the protease from A. terreus can be an excellent candidate for industrial applications, particularly in the leather industry.
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Affiliation(s)
- Emmly Ernesto de Lima
- Laboratory of Biochemistry and Microorganisms - Bioscience Institute (InBio), Federal University of Mato Grosso of Sul/UFMS, Campo Grande, MS, Brazil
| | - Daniel Guerra Franco
- Laboratory of Biochemistry and Microorganisms - Bioscience Institute (InBio), Federal University of Mato Grosso of Sul/UFMS, Campo Grande, MS, Brazil
| | - Rodrigo Mattos Silva Galeano
- Laboratory of Biochemistry and Microorganisms - Bioscience Institute (InBio), Federal University of Mato Grosso of Sul/UFMS, Campo Grande, MS, Brazil
| | | | - Douglas Chodi Masui
- Laboratory of Biochemistry and Microorganisms - Bioscience Institute (InBio), Federal University of Mato Grosso of Sul/UFMS, Campo Grande, MS, Brazil
| | - Giovana Cristina Giannesi
- Laboratory of Biochemistry and Microorganisms - Bioscience Institute (InBio), Federal University of Mato Grosso of Sul/UFMS, Campo Grande, MS, Brazil
| | - Fabiana Fonseca Zanoelo
- Laboratory of Biochemistry and Microorganisms - Bioscience Institute (InBio), Federal University of Mato Grosso of Sul/UFMS, Campo Grande, MS, Brazil
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da Silva RR, Souto TB, Gonsales da Rosa N, de Oliveira LCG, Juliano MA, Juliano L, Rosa JC, Cabral H. Evaluation of the milk clotting properties of an aspartic peptidase secreted by Rhizopus microsporus. Prep Biochem Biotechnol 2019; 50:226-233. [PMID: 31661372 DOI: 10.1080/10826068.2019.1683861] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Traditionally, chymosin has been used for milk-clotting, but this naturally occurring enzyme is in short supply and its use has raised religious and ethical concerns. Because milk-clotting peptidases are a promising substitute for chymosin in cheese preparation, there is a need to find and test the specificity of these enzymes. Here, we evaluated the milk-clotting properties of an aspartic peptidase secreted by Rhizopus microsporus. The molecular mass of this enzyme was estimated at 36 kDa and Pepstatin A was determined to be an inhibitor. Optimal activity occurred at a pH of 5.5 and a temperature range of 50-60 °C, but the peptidase was stable in the pH range of 4-7 and a temperature as low as 45 °C. Proteolytic activity was significantly reduced in the presence of Cu2+ and Al3+. When enzyme substrates based on FRET were used, this peptidase exhibited the highest catalytic efficiency for Abz-KNRSSKQ-EDDnp (4,644 ± 155 mM-1.s-1), Abz-KLRSSNQ-EDDnp (3,514 ± 130 mM-1.s-1), and Abz-KLRQSKQ-EDDnp (3,068 ± 386 mM-1.s-1). This study presents a promising peptidase for use in cheese making, due to its high stability in the presence of Ca2+ and broad pH range of 4-7, in addition to its ability to efficiently clot milk.
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Affiliation(s)
- Ronivaldo Rodrigues da Silva
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Tatiane Beltramini Souto
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Nathalia Gonsales da Rosa
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | | | | | - Luiz Juliano
- Universidade Federal de São Paulo, São Paulo, Brazil
| | - Jose C Rosa
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Hamilton Cabral
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
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Gimenes NC, Silveira E, Tambourgi EB. An Overview of Proteases: Production, Downstream Processes and Industrial Applications. Separation & Purification Reviews 2019. [DOI: 10.1080/15422119.2019.1677249] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | - Edgar Silveira
- Biotechnology Institute, Federal University of Uberlandia, Uberlandia, Minas Gerais, Brazil
- Brazilian Savanna’s, Diversity Research Center, Federal University of Uberlandia, Uberlandia, Minas Gerais, Brazil
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da Silva RR, da Rosa NG, de Oliveira LCG, Juliano MA, Juliano L, Rosa JC, Cabral H. Biochemical Properties and Catalytic Specificity of a Novel Neutral Serine Peptidase Secreted by Fungus Pyrenochaetopsis sp. Appl Biochem Biotechnol 2018; 187:1158-1172. [PMID: 30178205 DOI: 10.1007/s12010-018-2875-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 08/24/2018] [Indexed: 10/28/2022]
Abstract
The fungal genus Pyrenochaetopsis has received particular attention because of its different lifestyles, such as numerous plant pathogenic, saprophytic, and endophytic species. Its ability to infect plant cells relies heavily upon secreted peptidases. Here, we investigated the biochemical properties and catalytic specificity of a new serine peptidase secreted by the filamentous fungus Pyrenochaetopsis sp. We found that while this neutral serine peptidase displayed optimal activity at a pH of 7.0 and temperature of 45 °C, it tolerated a wide range of pH conditions and temperatures lower than 45 °C. Its peptidase activity was depressed by some metallic ions (such as aluminum, cobalt, and copper (II) chloride) and enhanced by others (such as sodium, lithium, magnesium, potassium, calcium, and manganese). Lastly, the enzyme showed the greatest specificity for non-polar amino acids, particularly leucine and isoleucine, and moderate specificity for basic and neutral polar amino acids. It displayed the least specificity for acidic residues.
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Affiliation(s)
- Ronivaldo Rodrigues da Silva
- Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista "Júlio de Mesquita Filho", São José do Rio Preto, São Paulo, Brazil
| | - Nathalia Gonsales da Rosa
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. do Café, s/n° Campus Universitário da USP CEP, Ribeirão Preto, São Paulo, 14040-903, Brazil
| | | | | | - Luiz Juliano
- Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil
| | - Jose C Rosa
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Hamilton Cabral
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. do Café, s/n° Campus Universitário da USP CEP, Ribeirão Preto, São Paulo, 14040-903, Brazil.
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8
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Abstract
Peptidases are enzymes that cleave peptide bonds, yielding proteins and peptides. Enzymes in this class also perform several other functions, regulating the activation or inactivation of target substrates via proteolysis. Owing to these functions, peptidases have been extensively used in industrial and biotechnological applications. Given their potential functions, it is important to optimize the use of these enzymes, which requires determination of the specificity of each peptidase. The peptidase specificity must be taken into account in choosing a peptidase to catalyze the available protein source within the desired application. The specificity of a peptidase defines the profile of enzyme–substrate interactions, and for this the catalytic site and the arrangement of the amino acid residues involved in peptide bond cleavage need to be known. The catalytic sites of peptidases may be composed of several subsites that interact with amino acid residues for proteolysis. Filamentous fungi produce peptidases with varying specificity, and here we provide a review of those reported to date and their potential applications.
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Affiliation(s)
| | | | - Rafael Pedezzi
- a School of Pharmaceutical Sciences of Ribeirão Preto , University of São Paulo , Ribeirão Preto , Brazil
| | - Hamilton Cabral
- a School of Pharmaceutical Sciences of Ribeirão Preto , University of São Paulo , Ribeirão Preto , Brazil
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Sierra EM, Pereira MR, Maester TC, Gomes-Pepe ES, Mendoza ER, Lemos EGDM. Halotolerant aminopeptidase M29 from Mesorhizobium SEMIA 3007 with biotechnological potential and its impact on biofilm synthesis. Sci Rep 2017; 7:10684. [PMID: 28878230 PMCID: PMC5587760 DOI: 10.1038/s41598-017-10932-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 08/16/2017] [Indexed: 12/04/2022] Open
Abstract
The aminopeptidase gene from Mesorhizobium SEMIA3007 was cloned and overexpressed in Escherichia coli. The enzyme called MesoAmp exhibited optimum activity at pH 8.5 and 45 °C and was strongly activated by Co2+ and Mn2+. Under these reaction conditions, the enzyme displayed Km and kcat values of 0.2364 ± 0.018 mM and 712.1 ± 88.12 s−1, respectively. Additionally, the enzyme showed remarkable stability in organic solvents and was active at high concentrations of NaCl, suggesting that the enzyme might be suitable for use in biotechnology. MesoAmp is responsible for 40% of the organism’s aminopeptidase activity. However, the enzyme’s absence does not affect bacterial growth in synthetic broth, although it interfered with biofilm synthesis and osmoregulation. To the best of our knowledge, this report describes the first detailed characterization of aminopeptidase from Mesorhizobium and suggests its importance in biofilm formation and osmotic stress tolerance. In summary, this work lays the foundation for potential biotechnological applications and/or the development of environmentally friendly technologies and describes the first solvent- and halo-tolerant aminopeptidases identified from the Mesorhizobium genus and its importance in bacterial metabolism.
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Affiliation(s)
- Elwi Machado Sierra
- Department of Technology, São Paulo State University, Jaboticabal, São Paulo State, Brazil.,Universidad Simón Bolívar, Barranquilla, Colombia
| | | | | | - Elisangela Soares Gomes-Pepe
- Department of Technology, São Paulo State University, Jaboticabal, São Paulo State, Brazil.,Institute for Research in Bioenergy (IPBEN), Jaboticabal, São Paulo State, Brazil
| | - Elkin Rodas Mendoza
- Department of Technology, São Paulo State University, Jaboticabal, São Paulo State, Brazil
| | - Eliana G de Macedo Lemos
- Department of Technology, São Paulo State University, Jaboticabal, São Paulo State, Brazil. .,Institute for Research in Bioenergy (IPBEN), Jaboticabal, São Paulo State, Brazil. .,Av. Prof. Paulo Donato Castellane, s/n. Jaboticabal, Post code 14884-900, São Paulo State, Brazil.
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da Silva RR, de Oliveira LCG, Juliano MA, Juliano L, de Oliveira AH, Rosa JC, Cabral H. Biochemical and milk-clotting properties and mapping of catalytic subsites of an extracellular aspartic peptidase from basidiomycete fungus Phanerochaete chrysosporium. Food Chem 2017; 225:45-54. [DOI: 10.1016/j.foodchem.2017.01.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 12/21/2016] [Accepted: 01/03/2017] [Indexed: 11/18/2022]
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da Silva RR. Bacterial and Fungal Proteolytic Enzymes: Production, Catalysis and Potential Applications. Appl Biochem Biotechnol 2017; 183:1-19. [DOI: 10.1007/s12010-017-2427-2] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 01/24/2017] [Indexed: 11/29/2022]
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Hamin Neto YAA, de Oliveira LCG, de Oliveira JR, Juliano MA, Juliano L, Arantes EC, Cabral H. Analysis of the Specificity and Biochemical Characterization of Metalloproteases Isolated from Eupenicillium javanicum Using Fluorescence Resonance Energy Transfer Peptides. Front Microbiol 2017; 7:2141. [PMID: 28119672 PMCID: PMC5220088 DOI: 10.3389/fmicb.2016.02141] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 12/19/2016] [Indexed: 11/17/2022] Open
Abstract
Enzymes have important features that may facilitate their application in industrial processes and have been used as alternatives to chemical catalysts. In particular, proteases can be isolated from microorganisms, which provide important sources of advantageous enzymes for industrial processes. For example, Eupenicillium javanicum is a filamentous fungus that has been shown to express industrially applicable enzymes and chemical components, such as antifungal compounds. The biotechnological potential of E. javanicum and proteases made us search a novel protease from this microorganism. The macromolecule was isolated, the main biochemical properties was evaluated, and the specificity of the protease subsites was determined. The protease was produced under solid-state bioprocess with wheat bran and isolated by two chromatography steps with yield of 27.5% and 12.4-fold purification. The molecular mass was estimated at 30 kDa. The N-terminal sequence of the first 20 amino acid residues was AVGAGYNASVALALEKALNN. The enzyme presented higher proteolytic activity at pH 6.0 and 60°C. The protease is stable at wide range of pH values and temperatures and in the presence of surfactants. The “primed” side of the catalytic site showed the highest catalytic efficiency of the enzyme isolated from E. javanicum. The S′1 subsite is responsible for catalyzing the protease reaction with substrates with tyrosine in P′1. These findings provide important insights into the biochemical characterization of a highly active protease from E. javanicum and may facilitate the development of industrial processes involving this protease.
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Affiliation(s)
- Youssef A A Hamin Neto
- Department of Pharmaceutical Sciences, School of Pharmaceutical Sciences of Ribeirao Preto, University of São Paulo Ribeirão Preto, Brazil
| | - Lilian C G de Oliveira
- Department of Biophysics, Paulista Medical School, Federal University of São Paulo São Paulo, Brazil
| | - Juliana R de Oliveira
- Department of Biophysics, Paulista Medical School, Federal University of São Paulo São Paulo, Brazil
| | - Maria A Juliano
- Department of Biophysics, Paulista Medical School, Federal University of São Paulo São Paulo, Brazil
| | - Luiz Juliano
- Department of Biophysics, Paulista Medical School, Federal University of São Paulo São Paulo, Brazil
| | - Eliane C Arantes
- Department of Physics and Chemistry, School of Pharmaceutical Sciences of Ribeirao Preto, University of São Paulo Ribeirão Preto, Brazil
| | - Hamilton Cabral
- Department of Pharmaceutical Sciences, School of Pharmaceutical Sciences of Ribeirao Preto, University of São Paulo Ribeirão Preto, Brazil
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da Silva RR, de Oliveira LCG, Juliano MA, Juliano L, Rosa JC, Cabral H. Activity of a peptidase secreted by Phanerochaete chrysosporium depends on lysine to subsite S’ 1. Int J Biol Macromol 2017; 94:474-483. [DOI: 10.1016/j.ijbiomac.2016.10.063] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 10/17/2016] [Accepted: 10/18/2016] [Indexed: 10/20/2022]
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da Silva RR, Souto TB, de Oliveira TB, de Oliveira LCG, Karcher D, Juliano MA, Juliano L, de Oliveira AHC, Rodrigues A, Rosa JC, Cabral H. Evaluation of the catalytic specificity, biochemical properties, and milk clotting abilities of an aspartic peptidase from Rhizomucor miehei. ACTA ACUST UNITED AC 2016; 43:1059-69. [DOI: 10.1007/s10295-016-1780-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 04/28/2016] [Indexed: 10/21/2022]
Abstract
Abstract
In this study, we detail the specificity of an aspartic peptidase from Rhizomucor miehei and evaluate the effects of this peptidase on clotting milk using the peptide sequence of k-casein (Abz-LSFMAIQ-EDDnp) and milk powder. Molecular mass of the peptidase was estimated at 37 kDa, and optimum activity was achieved at pH 5.5 and 55 °C. The peptidase was stable at pH values ranging from 3 to 5 and temperatures of up 45 °C for 60 min. Dramatic reductions in proteolytic activity were observed with exposure to sodium dodecyl sulfate, and aluminum and copper (II) chloride. Peptidase was inhibited by pepstatin A, and mass spectrometry analysis identified four peptide fragments (TWSISYGDGSSASGILAK, ASNGGGGEYIFGGYDSTK, GSLTTVPIDNSR, and GWWGITVDRA), similar to rhizopuspepsin. The analysis of catalytic specificity showed that the coagulant activity of the peptidase was higher than the proteolytic activity and that there was a preference for aromatic, basic, and nonpolar amino acids, particularly methionine, with specific cleavage of the peptide bond between phenylalanine and methionine. Thus, this peptidase may function as an important alternative enzyme in milk clotting during the preparation of cheese.
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de Oliveira APA, Silvestre MA, Garcia NFL, Alves-Prado HF, Rodrigues A, da Paz MF, Fonseca GG, Leite RSR. Production and Catalytic Properties of Amylases from Lichtheimia ramosa and Thermoascus aurantiacus by Solid-State Fermentation. ScientificWorldJournal 2016; 2016:7323875. [PMID: 27413773 PMCID: PMC4931097 DOI: 10.1155/2016/7323875] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 05/11/2016] [Accepted: 05/31/2016] [Indexed: 11/18/2022] Open
Abstract
The present study compared the production and the catalytic properties of amylolytic enzymes obtained from the fungi Lichtheimia ramosa (mesophilic) and Thermoascus aurantiacus (thermophilic). The highest amylase production in both fungi was observed in wheat bran supplemented with nutrient solution (pH 4.0) after 96 hours of cultivation, reaching 417.2 U/g of dry substrate (or 41.72 U/mL) and 144.5 U/g of dry substrate (or 14.45 U/mL) for L. ramosa and T. aurantiacus, respectively. The enzymes showed higher catalytic activity at pH 6.0 at 60°C. The amylases produced by L. ramosa and T. aurantiacus were stable between pH 3.5-10.5 and pH 4.5-9.5, respectively. The amylase of L. ramosa was stable at 55°C after 1 hour of incubation, whereas that of T. aurantiacus maintained 60% of its original activity under the same conditions. Both enzymes were active in the presence of ethanol. The enzymes hydrolyzed starch from different sources, with the best results obtained with corn starch. The enzymatic complex produced by L. ramosa showed dextrinizing and saccharifying potential. The enzymatic extract produced by the fungus T. aurantiacus presented only saccharifying potential, releasing glucose monomers as the main hydrolysis product.
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Affiliation(s)
- Ana Paula Aguero de Oliveira
- Laboratory of Enzymology and Fermentation Processes, Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados (FCBA/UFGD), Rodovia Dourados/Itahum, km 12, 79804-970 Dourados, MS, Brazil
| | - Maria Alice Silvestre
- Laboratory of Enzymology and Fermentation Processes, Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados (FCBA/UFGD), Rodovia Dourados/Itahum, km 12, 79804-970 Dourados, MS, Brazil
| | - Nayara Fernanda Lisboa Garcia
- Laboratory of Enzymology and Fermentation Processes, Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados (FCBA/UFGD), Rodovia Dourados/Itahum, km 12, 79804-970 Dourados, MS, Brazil
| | - Heloíza Ferreira Alves-Prado
- Faculty of Engineering, Department of Phytotechnology, Food Technology and Social Economy, São Paulo State University (FEIS/UNESP), Avenida Brasil, No. 56, 15385-000 Ilha Solteira, SP, Brazil
| | - André Rodrigues
- Laboratory of Fungal Ecology and Systematics, Biosciences Institute, Department of Biochemistry and Microbiology, São Paulo State University (IB/UNESP), Avenida 24A, No. 1515, 13506-900 Rio Claro, SP, Brazil
| | - Marcelo Fossa da Paz
- Laboratory of Enzymology and Fermentation Processes, Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados (FCBA/UFGD), Rodovia Dourados/Itahum, km 12, 79804-970 Dourados, MS, Brazil
| | - Gustavo Graciano Fonseca
- Laboratory of Bioengineering, Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados (FCBA/UFGD), Rodovia Dourados/Itahum, km 12, 79804-970 Dourados, MS, Brazil
| | - Rodrigo Simões Ribeiro Leite
- Laboratory of Enzymology and Fermentation Processes, Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados (FCBA/UFGD), Rodovia Dourados/Itahum, km 12, 79804-970 Dourados, MS, Brazil
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Fl aacute via RDSS, Nayara FLG, Marcelo FDP, Gustavo GF, Rodrigo SOERL. Production and characterization of -glucosidase from Gongronella butleri by solid-state fermentation. ACTA ACUST UNITED AC 2016. [DOI: 10.5897/ajb2015.15025] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Garcia NFL, da Silva Santos FR, Gonçalves FA, da Paz MF, Fonseca GG, Leite RSR. Production of β-glucosidase on solid-state fermentation by Lichtheimia ramosa in agroindustrial residues: Characterization and catalytic properties of the enzymatic extract. ELECTRON J BIOTECHN 2015. [DOI: 10.1016/j.ejbt.2015.05.007] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Biaggio RT, Silva RRD, Rosa NGD, Leite RSR, Arantes EC, Cabral TPDF, Juliano MA, Juliano L, Cabral H. Purification and biochemical characterization of an extracellular serine peptidase fromAspergillus terreus. Prep Biochem Biotechnol 2015; 46:298-304. [DOI: 10.1080/10826068.2015.1031387] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Lopes VF, Cabral H, Machado LPB, Mateus RP. Purification and characterization of a specific late-larval esterase from two species of the Drosophila repleta group: contributions to understand its evolution. Zool Stud 2014. [DOI: 10.1186/1810-522x-53-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Abstract
Background
After duplication, one copy of an original gene can become redundant and decay toward a pseudogene status or functionally diverge. Here, we performed the purification and biochemical characterization of EST-4 (a late larval β-esterase) from two Drosophila repleta group species, Drosophila mulleri and Drosophila arizonae, in order to establish comparative parameters between these enzymes in these species and to contribute to better understand their evolution.
Results
In D. mulleri, EST-4 had an optimal activity in temperatures ranging from 40° to 45°C and at pH 7.5, maintaining stability in alkaline pH (8.0 to 10.0). It was classified as serine esterase as its activity was inhibited by PMSF. No ion negatively modulated EST-4 activity, and iron had the most positive modulating effect. In D. arizonae, it showed similar optimum temperature (40°C), pH (8.0), and was also classified as a serine esterase, but the enzymatic stability was maintained in an acidic pH (5.5 to 6.5). Fe+2 had the opposite effect found in D. mulleri, that is, negative modulation. Al+3 almost totally inhibited the EST-4 activity, and Na+ and Cu+2 had a positive modulation effect. Kinetic studies, using ρ-nitrophenyl acetate as substrate, showed that EST-4 from D. mulleri had higher affinity, while in D. arizonae, it showed higher V
max and catalytic efficiency in optimal reaction conditions.
Conclusions
EST-4 from D. mulleri and D. arizonae are very closely related and still maintain several similar features; however, they show some degree of differentiation. Considering that EST-4 from D. mulleri has more conspicuous gel mobility difference among all EST-4 studied so far and a lower catalytic efficiency was observed here, we proposed that after duplication, this new copy of the original gene became redundant and started to decay toward a pseudogene status in this species, which probably is not occurring in D. arizonae.
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Graminho ER, da Silva RR, de Freitas Cabral TP, Arantes EC, da Rosa NG, Juliano L, Okamoto DN, de Oliveira LCG, Kondo MY, Juliano MA, Cabral H. Purification, Characterization, and Specificity Determination of a New Serine Protease Secreted by Penicillium waksmanii. Appl Biochem Biotechnol 2013; 169:201-14. [DOI: 10.1007/s12010-012-9974-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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