prepared. The reductive alkylation of four of the lysine residues of the bovine α-chymotrypsin led to a lipo-1-deoxyglycytolated enzyme. This modified protein efficiently catalyzed the synthesis of N-acetyl aminoacid ethyl esters in different solvents with 2.5–3% water contents. Compared to the native enzyme, enhanced esterification rates were determined, particularly in tetrahydrofuran, ethyl acetate and
制备了具有反应性醛戊糖功能的脂二糖,即6-O-辛基-β-D-
吡喃半
乳糖基-(1→5)-
L-阿拉伯糖(5)。牛α-胰凝乳
蛋白酶的四个赖
氨酸残基的还原性烷基化导致了lipo-1-deoxyglycytolated酶。这种修饰的蛋白质可以有效地催化在
水含量为2.5%至3%的不同溶剂中合成N-乙酰基
氨基酸乙酯。与天然酶相比,提高了酯化率,特别是在
四氢呋喃,
乙酸乙酯和
乙腈中。