The biosynthesis of the thiazole moiety of thiamine in Salmonella Typhimurium.

Autor: Bellion E, Kirkley DH, Faust JR
Jazyk: angličtina
Zdroj: Biochimica et biophysica acta [Biochim Biophys Acta] 1976 Jun 23; Vol. 437 (1), pp. 229-37.
DOI: 10.1016/0304-4165(76)90364-0
Abstrakt: The mechanism of biosynthesis of 4-methyl-5-beta-hydroxyethyl thiazole, the thiazole moiety of thiamine was studied in Salmonella typhimurium. Using the adenosine derepression technique the incorporation of various 14C-labeled precursors was determined. We found that;e1Me-14C]methionine, [2-14C]methionine, [U-14C]alanine, and [2-14C]glycine were not incorporated whereas [2-14C]tyrosine was incorporated. Degradation of the 4-methyl-5-beta-hydroxyethyl thiazole obtained after [2-14C]tyrosine incorporation revealed that all of the activity was located on carbon-2. These findings are discussed and compared with previous findings concerning 4-methyl-5-beta-hydroxyethyl thiazole biosynthesis.
Databáze: MEDLINE