From Suicide Enzyme to Catalyst: The Iron-Dependent Sulfide Transfer in Methanococcus jannaschii Thiamin Thiazole Biosynthesis. Academic Article uri icon


  • 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 sulfide and is catalytic. Structural and biochemical studies on this enzyme elucidate the mechanistic details of the sulfide transfer reactions.

published proceedings

  • J Am Chem Soc

altmetric score

  • 0.5

author list (cited authors)

  • Eser, B. E., Zhang, X., Chanani, P. K., Begley, T. P., & Ealick, S. E.

citation count

  • 25

complete list of authors

  • Eser, Bekir E||Zhang, Xuan||Chanani, Prem K||Begley, Tadhg P||Ealick, Steven E

publication date

  • March 2016