Identification and Characterization of the Rhizobium sp. Strain GIN611 Glycoside Oxidoreductase Resulting in the Deglycosylation of Ginsenosides
Identifieur interne : 001295 ( Main/Exploration ); précédent : 001294; suivant : 001296Identification and Characterization of the Rhizobium sp. Strain GIN611 Glycoside Oxidoreductase Resulting in the Deglycosylation of Ginsenosides
Auteurs : Eun-Mi Kim [Corée du Sud] ; Juhan Kim [États-Unis] ; Joo-Hyun Seo [Corée du Sud] ; Jun-Seong Park [Corée du Sud] ; Duck-Hee Kim [Corée du Sud] ; Byung-Gee Kim [Corée du Sud]Source :
- Applied and Environmental Microbiology [ 0099-2240 ] ; 2012.
Abstract
Using enrichment culture,
Url:
DOI: 10.1128/AEM.06404-11
PubMed: 22020506
PubMed Central: 3255640
Affiliations:
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Le document en format XML
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sp. Strain GIN611 Glycoside Oxidoreductase Resulting in the Deglycosylation of Ginsenosides</title>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Identification and Characterization of the <named-content content-type="genus-species">Rhizobium</named-content>
sp. Strain GIN611 Glycoside Oxidoreductase Resulting in the Deglycosylation of Ginsenosides</title>
<author><name sortKey="Kim, Eun Mi" sort="Kim, Eun Mi" uniqKey="Kim E" first="Eun-Mi" last="Kim">Eun-Mi Kim</name>
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<author><name sortKey="Kim, Juhan" sort="Kim, Juhan" uniqKey="Kim J" first="Juhan" last="Kim">Juhan Kim</name>
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<author><name sortKey="Park, Jun Seong" sort="Park, Jun Seong" uniqKey="Park J" first="Jun-Seong" last="Park">Jun-Seong Park</name>
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<author><name sortKey="Kim, Byung Gee" sort="Kim, Byung Gee" uniqKey="Kim B" first="Byung-Gee" last="Kim">Byung-Gee Kim</name>
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<series><title level="j">Applied and Environmental Microbiology</title>
<idno type="ISSN">0099-2240</idno>
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<front><div type="abstract" xml:lang="en"><p>Using enrichment culture, <named-content content-type="genus-species">Rhizobium</named-content>
sp. strain GIN611 was isolated as having activity for deglycosylation of a ginsenoside, compound K (CK). The purified heterodimeric protein complex from <named-content content-type="genus-species">Rhizobium</named-content>
sp. GIN611 consisted of two subunits with molecular masses of 63.5 kDa and 17.5 kDa. In the genome, the coding sequence for the small subunit was located right after the sequence for the large subunit, with one nucleotide overlapping. The large subunit showed CK oxidation activity, and the deglycosylation of compound K was performed via oxidation of ginsenoside glucose by glycoside oxidoreductase. Coexpression of the small subunit helped soluble expression of the large subunit in recombinant <named-content content-type="genus-species">Escherichia coli</named-content>
. The purified large subunit also showed oxidation activity against other ginsenoside compounds, such as Rb1, Rb2, Rb3, Rc, F2, CK, Rh2, Re, F1, and the isoflavone daidzin, but at a much lower rate. When oxidized CK was extracted and incubated in phosphate buffer with or without enzyme, (<italic>S</italic>
)-protopanaxadiol [PPD(S)] was detected in both cases, which suggests that deglycosylation of oxidized glucose is spontaneous.</p>
</div>
</front>
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<name sortKey="Park, Jun Seong" sort="Park, Jun Seong" uniqKey="Park J" first="Jun-Seong" last="Park">Jun-Seong Park</name>
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