Human AICAR Transformylase: Role of the 4-Carboxamide of AICAR in Binding and Catalysis
作者:Mark Wall、Jae Hoon Shim、Stephen J. Benkovic
DOI:10.1021/bi0007268
日期:2000.9.1
mammalian enzyme (K(i) = 0.05 +/- 0.02 microM for 4-N-allyl-AlCAR). It is proposed that the conformation of the carboxamide moiety required for binding to AICAR Tfase is different than the conformation required for binding to IMP CHase, which is supported by inhibition studies of purine ribonucleotides. It is shown that 5-formyl-AICAR (FAICAR) is a product inhibitor of AICAR Tfase with K(i) of 0.4 +/- 0