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J Am Chem Soc. 2006 Jun 7;128(22):7158-9.

Thiamin biosynthesis in eukaryotes: characterization of the enzyme-bound product of thiazole synthase from Saccharomyces cerevisiae and its implications in thiazole biosynthesis.

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  • 1Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, USA.

Abstract

The biosynthesis of thiamin pyrophosphate in eukaryotes is different from the prokaryotic biosynthesis and is poorly understood to date. Only one thiazole biosynthetic gene has been identified (Thi4 in Saccharomyces cerevisiae). Here we report the identification and characterization of a Thi4-bound metabolite that consists of the ADP adduct of 5-(2-hydroxyethyl)-4-methylthiazole-2-carboxylic acid. The unexpected structure of this compound yields the first insights into the mechanism of thiamin thiazole biosynthesis in eukaryotes.

PMID:
16734458
[PubMed - indexed for MEDLINE]
PMCID:
PMC2631426
Free PMC Article
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