Gastrointestinal thiaminase vs. ration changes
نویسندگان
چکیده
منابع مشابه
Structure of a eukaryotic thiaminase I.
Thiaminases, enzymes that cleave vitamin B1, are sporadically distributed among prokaryotes and eukaryotes. Thiaminase I enzymes catalyze the elimination of the thiazole ring moiety from thiamin through substitution of the methylene group with a nitrogenous base or sulfhydryl compound. In eukaryotic organisms, these enzymes are reported to have much higher molecular weights than their bacterial...
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An alternative method for measuring thiaminase I activity in complex samples is described. This assay is based on the selective consumption of the highly chromophoric 4-nitrothiophenolate by thiaminase I, resulting in a large decrease in absorbance at 411nm. This new assay is simple and sensitive, and it requires only readily available chemicals and a visible region spectrophotometer. In additi...
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ژورنال
عنوان ژورنال: Kansas Agricultural Experiment Station Research Reports
سال: 1993
ISSN: 2378-5977
DOI: 10.4148/2378-5977.2137