water, the industrial protease Alcalase allows selective synthesis of α-carboxylic acid methyl, ethyl, benzyl, allyl, 2-(trimethylsilyl)ethyl, and tert-butyl esters of aminoacids and peptides under mild conditions in very high yields. The purified yields range from 72% to 92%. enzymes - aminoacids - esterification - esters - protecting groups
<i>Bacillus subtilis</i>Esterase (BS2) and its Double Mutant Have Different Selectivity in the Removal of Carboxyl Protecting Groups
作者:Efrosini Barbayianni、Christoforos G. Kokotos、Sebastian Bartsch、Christina Drakou、Uwe T. Bornscheuer、George Kokotos
DOI:10.1002/adsc.200900325
日期:2009.10
An esterase from Bacillus subtilis (BS2) and itsdoublemutant E188W/M193C quickly hydrolyze n-butyl, n-propyl, methoxyethyl and allyl esters. The wild-type BS2 preferentially removes such esters from the γ-position of glutamate diesters, while the engineered enzyme has a reversed selectivity removing esters from the α-position of glutamate diesters. Automated docking and molecular dynamic simulations