Effect of substrate features and mutagenesis of active site tyrosine residues on the reaction course catalysed by <i>Trypanosoma brucei</i> sterol C-24-methyltransferase
作者:Jialin Liu、Kulothungan Ganapathy、Ewa Wywial、Janusz M. Bujnicki、Chizaram A. Nwogwugwu、W. David Nes
DOI:10.1042/bj20110865
日期:2011.11.1
product set consisting of Δ24(25)-, Δ24(28)- and Δ25(27)-olefins. The C-methylation reaction requires Si(β)-face C-24-methyl addition coupled to reversible migration of positive charge fromC-24 to C-25. The hydride shifts responsible for charge migration in formation of multiple ergostane olefin isomers catalysed by TbSMT were examined by incubation of a series of sterol acceptors paired with AdoMet (S