|
|
Registro Completo |
Biblioteca(s): |
Embrapa Agroenergia. |
Data corrente: |
27/01/2021 |
Data da última atualização: |
27/01/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SOUTO, B. de M.; ARAÚJO, A. C. B. de; HAMANN, P. R. V.; BASTOS, A. de R.; CUNHA, I. de S.; PEIXOTO, J.; KRUGER, R. H.; NORONHA, E. F.; QUIRINO, B. F. |
Afiliação: |
BETULIA DE MORAIS SOUTO, CNPAE; Ana Carolina Bitencourt de Araújo; Pedro Ricardo Vieira Hamann, Universidade de Brasília; Andrêssa de Rezende Bastos; Isabel de Souza Cunha, Universidade Católica de Brasília; Julianna Peixoto, Universidade de Brasília; Ricardo Henrique Kruger, Universidade de Brasília; Eliane Ferreira Noronha, Universidade de Brasília; BETANIA FERRAZ QUIRINO, CNPAE. |
Título: |
Functional screening of a Caatinga goat (Capra hircus) rumen metagenomic library reveals a novel GH3 beta-xylosidase. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
PLoS ONE, v. 16, n. 1, e024511, 2021. |
DOI: |
https://doi.org/10.1371/journal.pone.0245118 |
Idioma: |
Inglês |
Conteúdo: |
Functional screening of metagenomic libraries is an effective approach for identification of novel enzymes. A Caatinga biome goat rumen metagenomic library was screened using esculin as a substrate, and a gene from an unknown bacterium encoding a novel GH3 enzyme, BGL11, was identified. None of the BGL11 closely related genes have been previously characterized. Recombinant BGL11 was obtained and kinetically characterized. Substrate specificity of the purified protein was assessed using seven synthetic aryl substrates. Activity towards nitrophenyl-beta-D-glucopyranoside (pNPG), 4-nitrophenyl- beta -D-xylopyranoside (pNPX) and 4-nitrophenyl- beta -D-cellobioside (pNPC) suggested that BGL11 is a multifunctional enzyme with beta-glucosidase, beta-xylosidase, and cellobiohydrolase activities. However, further testing with five natural substrates revealed that, although BGL11 has multiple substrate specificity, it is most active towards xylobiose. Thus, in its native goat rumen environment, BGL11 most likely functions as an extracellular beta-xylosidase acting on hemicellulose. Biochemical characterization of BGL11 showed an optimal pH of 5.6, and an optimal temperature of 50°C. Enzyme stability, an important parameter for industrial application, was also investigated. At 40°C purified BGL11 remained active for more than 15 hours without reduction in activity, and at 50°C, after 7 hours of incubation, BGL11 remained 60% active. In contrast to BLG11, most beta-xylosidases kinetically studied belong to the GH43 family and have been characterized only using synthetic substrates. In industry, beta-xylosidases can be used for plant biomass deconstruction, and the released sugars can be fermented into valuable bio-products, ranging from the biofuel ethanol to the sugar substitute xylitol. MenosFunctional screening of metagenomic libraries is an effective approach for identification of novel enzymes. A Caatinga biome goat rumen metagenomic library was screened using esculin as a substrate, and a gene from an unknown bacterium encoding a novel GH3 enzyme, BGL11, was identified. None of the BGL11 closely related genes have been previously characterized. Recombinant BGL11 was obtained and kinetically characterized. Substrate specificity of the purified protein was assessed using seven synthetic aryl substrates. Activity towards nitrophenyl-beta-D-glucopyranoside (pNPG), 4-nitrophenyl- beta -D-xylopyranoside (pNPX) and 4-nitrophenyl- beta -D-cellobioside (pNPC) suggested that BGL11 is a multifunctional enzyme with beta-glucosidase, beta-xylosidase, and cellobiohydrolase activities. However, further testing with five natural substrates revealed that, although BGL11 has multiple substrate specificity, it is most active towards xylobiose. Thus, in its native goat rumen environment, BGL11 most likely functions as an extracellular beta-xylosidase acting on hemicellulose. Biochemical characterization of BGL11 showed an optimal pH of 5.6, and an optimal temperature of 50°C. Enzyme stability, an important parameter for industrial application, was also investigated. At 40°C purified BGL11 remained active for more than 15 hours without reduction in activity, and at 50°C, after 7 hours of incubation, BGL11 remained 60% active. In contrast to BLG11, most beta-xylosidases kinetical... Mostrar Tudo |
Thesagro: |
Clonagem; Enzima; Peptídeo; Programa de Computador. |
Thesaurus Nal: |
Cloning (animals); Computer software; Enzymes; Metagenomics; Prevotella; Screening; Signal peptide. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/220708/1/Functional-screening-of-a-Caatinga-goat-2021.pdf
|
Marc: |
LEADER 02852naa a2200361 a 4500 001 2129624 005 2021-01-27 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1371/journal.pone.0245118$2DOI 100 1 $aSOUTO, B. de M. 245 $aFunctional screening of a Caatinga goat (Capra hircus) rumen metagenomic library reveals a novel GH3 beta-xylosidase.$h[electronic resource] 260 $c2021 520 $aFunctional screening of metagenomic libraries is an effective approach for identification of novel enzymes. A Caatinga biome goat rumen metagenomic library was screened using esculin as a substrate, and a gene from an unknown bacterium encoding a novel GH3 enzyme, BGL11, was identified. None of the BGL11 closely related genes have been previously characterized. Recombinant BGL11 was obtained and kinetically characterized. Substrate specificity of the purified protein was assessed using seven synthetic aryl substrates. Activity towards nitrophenyl-beta-D-glucopyranoside (pNPG), 4-nitrophenyl- beta -D-xylopyranoside (pNPX) and 4-nitrophenyl- beta -D-cellobioside (pNPC) suggested that BGL11 is a multifunctional enzyme with beta-glucosidase, beta-xylosidase, and cellobiohydrolase activities. However, further testing with five natural substrates revealed that, although BGL11 has multiple substrate specificity, it is most active towards xylobiose. Thus, in its native goat rumen environment, BGL11 most likely functions as an extracellular beta-xylosidase acting on hemicellulose. Biochemical characterization of BGL11 showed an optimal pH of 5.6, and an optimal temperature of 50°C. Enzyme stability, an important parameter for industrial application, was also investigated. At 40°C purified BGL11 remained active for more than 15 hours without reduction in activity, and at 50°C, after 7 hours of incubation, BGL11 remained 60% active. In contrast to BLG11, most beta-xylosidases kinetically studied belong to the GH43 family and have been characterized only using synthetic substrates. In industry, beta-xylosidases can be used for plant biomass deconstruction, and the released sugars can be fermented into valuable bio-products, ranging from the biofuel ethanol to the sugar substitute xylitol. 650 $aCloning (animals) 650 $aComputer software 650 $aEnzymes 650 $aMetagenomics 650 $aPrevotella 650 $aScreening 650 $aSignal peptide 650 $aClonagem 650 $aEnzima 650 $aPeptídeo 650 $aPrograma de Computador 700 1 $aARAÚJO, A. C. B. de 700 1 $aHAMANN, P. R. V. 700 1 $aBASTOS, A. de R. 700 1 $aCUNHA, I. de S. 700 1 $aPEIXOTO, J. 700 1 $aKRUGER, R. H. 700 1 $aNORONHA, E. F. 700 1 $aQUIRINO, B. F. 773 $tPLoS ONE$gv. 16, n. 1, e024511, 2021.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Agroenergia (CNPAE) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registro Completo
Biblioteca(s): |
Embrapa Uva e Vinho. |
Data corrente: |
19/07/2016 |
Data da última atualização: |
19/07/2019 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
IWAMOTO, H.; VIEIRA, J. L.; MORAIS NETO, J. A. de; FIORELLI, L. E.; SCANAGATTA, V.; ZALAMENA, J.; MELO, G. W. B. de. |
Afiliação: |
Hissashi Iwamoto, Graduandos do Curso de Engenharia de Bioprocessos e Biotecnologia, UERGS, Bento Gonçalves, RS. E-mails: hissashi.mobile@gmail.com; Jaqueline Leite Vieira, Graduandos do Curso de Engenharia de Bioprocessos e Biotecnologia, UERGS, Bento Gonçalves, RS; José Antônio de Morais Neto, Graduandos do Curso de Engenharia de Bioprocessos e Biotecnologia, UERGS, Bento Gonçalves, RS; Luís Eduardo Fiorelli, Graduando do Curso de Tecnologia em Viticultura e Enologia, IFRGS, Bento Gonçalves, RS. E-mail: luisefiorelli@gmail.com; VOLMIR SCANAGATTA, CNPUV; Jovani Zalamena, Pós doutorando da UFSM. E-mail: jovanizalamena@yahoo.com.br; GEORGE WELLINGTON BASTOS DE MELO, CNPUV. |
Título: |
Efeito do gesso agrícola sobre a fitotoxicidade de cobre em aveia. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
In: ENCONTRO DE INICIAÇÃO CIENTÍFICA, 14. ENCONTRO DE PÓS-GRADUANDOS DA EMBRAPA UVA E VINHO, 10., 2016, Bento Gonçalves. Resumos...Bento Gonçalves, RS: Embrapa uva e Vinho, 2016. p. 42. |
Idioma: |
Português |
Notas: |
(Embrapa Uva e Vinho. Documentos, 99) |
Conteúdo: |
A viticultura no Rio Grande do Sul faz uso de grande quantidade de fungicidas cúpricos, que ao se acumular no solo pode atingir níveis tóxicos às plantas. O gesso agrícola, subproduto das indústrias na produção de ácido fosfórico, é um resíduo abundante e alvo de estudo para reaproveitamento e descarte apropriado. O objetivo deste trabalho foi verificar o efeito do gesso na mitigação do cobre (Cu) na cultura da aveia e efeitos no solo. |
Palavras-Chave: |
Anais; CNPUV; Cultura da aveia; Fitotoxicidade de cobre; Fitotoxicidade de cobre em aveia; Fungicidas cúpricos; Gesso agrícola; IC; Iniciação cientifica; Mitigação do cobre (Cu); Mitigação do cobre (Cu) na cultura da aveia; Viticultura no Rio Grande do Sul. |
Thesagro: |
Ácido Fosfórico; Aveia; Fitotoxicidade; Fruticultura; Fungo; Solo; Uva; Viticultura. |
Categoria do assunto: |
A Sistemas de Cultivo |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/145592/1/Doc99-iwamoto-p42.pdf
|
Marc: |
LEADER 01842nam a2200433 a 4500 001 2049165 005 2019-07-19 008 2016 bl uuuu u00u1 u #d 100 1 $aIWAMOTO, H. 245 $aEfeito do gesso agrícola sobre a fitotoxicidade de cobre em aveia.$h[electronic resource] 260 $aIn: ENCONTRO DE INICIAÇÃO CIENTÍFICA, 14. ENCONTRO DE PÓS-GRADUANDOS DA EMBRAPA UVA E VINHO, 10., 2016, Bento Gonçalves. Resumos...Bento Gonçalves, RS: Embrapa uva e Vinho, 2016. p. 42.$c2016 500 $a(Embrapa Uva e Vinho. Documentos, 99) 520 $aA viticultura no Rio Grande do Sul faz uso de grande quantidade de fungicidas cúpricos, que ao se acumular no solo pode atingir níveis tóxicos às plantas. O gesso agrícola, subproduto das indústrias na produção de ácido fosfórico, é um resíduo abundante e alvo de estudo para reaproveitamento e descarte apropriado. O objetivo deste trabalho foi verificar o efeito do gesso na mitigação do cobre (Cu) na cultura da aveia e efeitos no solo. 650 $aÁcido Fosfórico 650 $aAveia 650 $aFitotoxicidade 650 $aFruticultura 650 $aFungo 650 $aSolo 650 $aUva 650 $aViticultura 653 $aAnais 653 $aCNPUV 653 $aCultura da aveia 653 $aFitotoxicidade de cobre 653 $aFitotoxicidade de cobre em aveia 653 $aFungicidas cúpricos 653 $aGesso agrícola 653 $aIC 653 $aIniciação cientifica 653 $aMitigação do cobre (Cu) 653 $aMitigação do cobre (Cu) na cultura da aveia 653 $aViticultura no Rio Grande do Sul 700 1 $aVIEIRA, J. L. 700 1 $aMORAIS NETO, J. A. de 700 1 $aFIORELLI, L. E. 700 1 $aSCANAGATTA, V. 700 1 $aZALAMENA, J. 700 1 $aMELO, G. W. B. de
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Uva e Vinho (CNPUV) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|