Sterol C24-methyltransferase: Physio- and stereo-chemical features of the sterol C3 group required for catalytic competence
作者:Alicia L. Howard、Jialin Liu、Gamal A. Elmegeed、Emily K. Collins、Kalgi S. Ganatra、Chizaram A. Nwogwugwu、W. David Nes
DOI:10.1016/j.abb.2012.03.002
日期:2012.5
3-OMe, 3β-F, 3β-NH(2) (protonated species) or 3H group revealed that lanosterol and five substrate analogs were catalyzed and yielded identical side chain products whereas neither the 3H- or 3α-OH lanosterolderivatives were productively bound. Taken together, our results demonstrate a chemical complementarity involving hydrogenbonding formation of specific active site contacts to the nucleophilic C3-group