Molybdopterin Biosynthesis: Trapping of Intermediates for the MoaA-Catalyzed Reaction Using 2′-DeoxyGTP and 2′-ChloroGTP as Substrate Analogues.
作者:Angad P. Mehta、Sameh H. Abdelwahed、Hui Xu、Tadhg P. Begley
DOI:10.1021/ja502663k
日期:2014.7.30
molybdopterin biosynthesis. In this paper, we provide additional characterization of the MoaA reaction product, describe the use of 2′-chloroGTP to trap the GTP C3′ radical, generated by hydrogen atom transfer to the 5′-deoxyadenosyl radical, and the use of 2′-deoxyGTP to block a late step in the reaction sequence. These probes, coupled with the previously reported trapping of an intermediate in which C3′