Cloning and expression of versatile peroxidase from Rigidoporus vinctus
碩士 === 國立臺灣海洋大學 === 生物科技研究所 === 102 === Versatile peroxidase secreted by the white-rot fungus involved in the natural degradation of lignin. Versatile peroxidase can oxidize a variety of aromatic compounds by the catalytic tryptophan residue or Mn3+ which oxidized at the haem channel site. This...
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ndltd-TW-102NTOU56130322019-05-15T21:51:46Z http://ndltd.ncl.edu.tw/handle/gfprcg Cloning and expression of versatile peroxidase from Rigidoporus vinctus 紫紅硬孔菌多功能木質素過氧化酶之基因選殖及蛋白質表現 Pan, Chun-Chen 潘俊琛 碩士 國立臺灣海洋大學 生物科技研究所 102 Versatile peroxidase secreted by the white-rot fungus involved in the natural degradation of lignin. Versatile peroxidase can oxidize a variety of aromatic compounds by the catalytic tryptophan residue or Mn3+ which oxidized at the haem channel site. This lignin-degrading enzymes have potential applications in the pulp biobleaching, textile dyes decolorization, aromatic pollutants decomposition. In this study, a cDNA (1074 bp) encoding a putative VP from Rigidoporus vinctus was identified based on sequence homology. The deduced amino acid sequence (357 amino acids) is conseRved among the reported VP. The predicted molecular weight of RvVP was 34.8 kDa. A 3-D structural model of RvVP was constructed based on the crystal structure of Pleurotus eryngii VP (PDB code 2VKA). The active sites for oxidation of Mn2+ ions and for oxidation of aromatic substrates were identified, both characteristic for versatile peroxidase. To characterize the RvVP, the coding region was subcloned into an expression vector pET-20b(+) and pYEX-S1, then transformed into Escherichia coli and Saccharomyces cerevisiae. The recombinant RvVP expressed as inclusion bodies in E. coli and the soluble recombinant RvVP was obtained in S. cerevisiae, but the catalytically inactive this might be ascribable to absence of heme group. Lin, Chi-Tsai 林棋財 2014 學位論文 ; thesis 46 zh-TW |
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碩士 === 國立臺灣海洋大學 === 生物科技研究所 === 102 === Versatile peroxidase secreted by the white-rot fungus involved in the natural degradation of lignin. Versatile peroxidase can oxidize a variety of aromatic compounds by the catalytic tryptophan residue or Mn3+ which oxidized at the haem channel site. This lignin-degrading enzymes have potential applications in the pulp biobleaching, textile dyes decolorization, aromatic pollutants decomposition.
In this study, a cDNA (1074 bp) encoding a putative VP from Rigidoporus vinctus was identified based on sequence homology. The deduced amino acid sequence (357 amino acids) is conseRved among the reported VP. The predicted molecular weight of RvVP was 34.8 kDa. A 3-D structural model of RvVP was constructed based on the crystal structure of Pleurotus eryngii VP (PDB code 2VKA). The active sites for oxidation of Mn2+ ions and for oxidation of aromatic substrates were identified, both characteristic for versatile peroxidase.
To characterize the RvVP, the coding region was subcloned into an expression vector pET-20b(+) and pYEX-S1, then transformed into Escherichia coli and Saccharomyces cerevisiae. The recombinant RvVP expressed as inclusion bodies in E. coli and the soluble recombinant RvVP was obtained in S. cerevisiae, but the catalytically inactive this might be ascribable to absence of heme group.
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author2 |
Lin, Chi-Tsai |
author_facet |
Lin, Chi-Tsai Pan, Chun-Chen 潘俊琛 |
author |
Pan, Chun-Chen 潘俊琛 |
spellingShingle |
Pan, Chun-Chen 潘俊琛 Cloning and expression of versatile peroxidase from Rigidoporus vinctus |
author_sort |
Pan, Chun-Chen |
title |
Cloning and expression of versatile peroxidase from Rigidoporus vinctus |
title_short |
Cloning and expression of versatile peroxidase from Rigidoporus vinctus |
title_full |
Cloning and expression of versatile peroxidase from Rigidoporus vinctus |
title_fullStr |
Cloning and expression of versatile peroxidase from Rigidoporus vinctus |
title_full_unstemmed |
Cloning and expression of versatile peroxidase from Rigidoporus vinctus |
title_sort |
cloning and expression of versatile peroxidase from rigidoporus vinctus |
publishDate |
2014 |
url |
http://ndltd.ncl.edu.tw/handle/gfprcg |
work_keys_str_mv |
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