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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Thioglucosidase activity from Sphingobacterium sp. strain OTG1.

Screening for novel thioglucoside hydrolase activity resulted in the isolation of Sphingobacterium sp. strain OTG1 from enrichment cultures containing octylthioglucoside (OTG). OTG was hydrolysed into octanethiol and glucose by cell free extracts. Besides thioglucoside hydrolysis, several other glucoside hydrolase activities were detected in the Sphingobacterium sp. strain OTG1 cell free extract. By adding beta-glucosidase inhibitors it was possible to discriminate between these different activities. Ascorbic acid and D-gluconic acid lactone inhibited the hydrolysis of p-nitrophenyl beta-glucoside, but did not affect octyl- and octylthioglucoside hydrolase activity. Besides OTG, various other thioglucosides were hydrolysed by the novel thioglucosidase, with almost the same activities regardless of the nature of the aglycone, including the myrosinase model substrate sinigrin (a glucosinolate). Sinigrin could also be used as a growth substrate by Sphingobacterium sp. strain OTG1, although at concentrations exceeding 0.15 mM degradation was not complete.[1]


  1. Thioglucosidase activity from Sphingobacterium sp. strain OTG1. Meulenbeld, G.H., Hartmans, S. Appl. Microbiol. Biotechnol. (2001) [Pubmed]
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