From Suicide Enzyme to Catalyst: The Iron-Dependent Sulfide Transfer in <i>Methanococcus jannaschii</i> Thiamin Thiazole Biosynthesis
作者:Bekir E. Eser、Xuan Zhang、Prem K. Chanani、Tadhg P. Begley、Steven E. Ealick
DOI:10.1021/jacs.6b00445
日期:2016.3.23
Bacteria and yeast utilize different strategies for sulfur incorporation in the biosynthesis of the thiamin thiazole. Bacteria use thiocarboxylated proteins. In contrast, Saccharomyces cerevisiae thiazole synthase (THI4p) uses an active site cysteine as the sulfide source and is inactivated after a single turnover. Here, we demonstrate that the Thi4 ortholog from Methanococcus jannaschii uses exogenous