2019
DOI: 10.1002/btpr.2795
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Heterologous expression of Neurospora crassa cbh1 gene in Pichia pastoris resulted in production of a neutral cellobiohydrolase I

Abstract: The high production cost of cellulase is one of the limitations that hinder the commercialization of lignocellulose-based biorefineries. As one of the important cellulases, Neurospora crassa cellulase is not so intensively investigated as T. reesei cellulase.In this study, the cbh1gene (NCU07340) cloned from N. crassa was expressed in Pichia pastoris under the control of alcohol oxidase 1 (AOX1) promotor. Six transformants with the highest resistance to G418 were selected by two rounds of transformant screenin… Show more

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Cited by 8 publications
(8 citation statements)
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“…Because the circular plasmid cannot be transcribed and translated in eukaryotic cells such as yeast, it is necessary to linearize the recombinant plasmid and integrate it into the genomic DNA of yeast cells . In methanol-inducible expression vectors such as pPICZαA and pPIC9K, the AOX1 gene is used as the promoter of P AOX1 , and a restriction site (such as Sac I) located in the strong promoter is selected to connect the foreign gene downstream of the P AOX1 strong promoter to obtain high expression. ,, Therefore, in order to integrate the recombinant plasmid into the yeast genome, the recombinant plasmid was linearized by Sac I. The linearized recombinant plasmid was transformed into GS115 yeast competent cells by electroporation.…”
Section: Resultsmentioning
confidence: 99%
“…Because the circular plasmid cannot be transcribed and translated in eukaryotic cells such as yeast, it is necessary to linearize the recombinant plasmid and integrate it into the genomic DNA of yeast cells . In methanol-inducible expression vectors such as pPICZαA and pPIC9K, the AOX1 gene is used as the promoter of P AOX1 , and a restriction site (such as Sac I) located in the strong promoter is selected to connect the foreign gene downstream of the P AOX1 strong promoter to obtain high expression. ,, Therefore, in order to integrate the recombinant plasmid into the yeast genome, the recombinant plasmid was linearized by Sac I. The linearized recombinant plasmid was transformed into GS115 yeast competent cells by electroporation.…”
Section: Resultsmentioning
confidence: 99%
“…Particularmente no caso da xilana, a desconstrução da cadeia principal a monômeros de Dxilose pode ser alcançada mediante a catálise por endo-1,4-β-xilanases e β-xilosidases (MÉNDEZ-LÍTER et al, 2021). As xilanases desempenham um papel fundamental nesse processo, uma vez que promovem o ataque inicial às ligações glicosídicas presentes no interior desse polímero, convertendo-o em xilooligossacarídeos (XOs) com diferentes graus de polimerização (CHEN et al, 2019a;HAN et al, 2019;HAQ & AKRAM, 2019;YANG et al, 2019;EVANGELISTA et al, 2018;AN et al, 2015).…”
Section: Hemicelulases: Xilanasesunclassified
“…Xilanases GH11, por exemplo, geralmente apresentam eficiências catalíticas superiores, além de valores de pI mais elevados e pesos moleculares menores que 30 kDa. Por outro lado, foi reportado que xilanases GH10 exibiram melhores desempenhos quando associadas a celulases durante a degradação de biomassas; somado a isso, essas enzimas costumam exibir maiores termoestabilidade e versatilidade catalítica (ou seja, possuem a habilidade de atuar em uma maior variedade de substratos ou, mais especificamente, em xilanas com diferentes graus e tipos de substituição), sendo, portanto, alvos muito interessantes para propósitos industriais (MÉNDEZ-LÍTER et al, 2021;JOSHI et al, 2020;YANG et al, 2020;HE et al, 2019;YANG et al, 2019;HU & SADDLER, 2018;MAITAN-ALFENAS et al, 2016;van GOOL et al, 2013).…”
Section: Hemicelulases: Xilanasesunclassified
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