Operational Control of Stereoselectivity during the Enzymatic Hydrolysis of Racemic Organophosphorus Compounds
作者:Yingchun Li、Sarah D. Aubert、Frank M. Raushel
DOI:10.1021/ja035625m
日期:2003.6.1
The wild-type bacterial phosphotriesterase catalyzes the stereoselective hydrolysis of racemic pairs of organophosphorus compounds. The enzymatic stereoselectivity can be substantially enhanced via systematic alteration of the pKa for the leaving group phenol in the target substrates. These changes alter the rate-limiting step for substrate turnover from a diffusional event to phosphorus-oxygen bond