Enzymatic Peptide Synthesis with p-Guanidinophenyl and p-(Guanidinomethyl)phenyl Esters as Acyl Donors.
作者:Haruo SEKIZAKI、Kunihiko ITHO、Eiko TOYOTA、Kazutaka TANIZAWA
DOI:10.1248/cpb.46.846
日期:——
Two series of "inverse substrates", N-Boc-amino acid p-guanidinophenyl and p-(guanidinomethyl)phenyl esters, were prepared as acyl donor components for enzymatic peptide synthesis. The kinetic behavior of these esters toward bovine and Streptomyces griseus (SG) trypsin was analyzed. The spatial requirement of the active site of these enzymes for catalytic efficiency is discussed based on the steric
制备了两个系列的“反向底物”,N-Boc-氨基酸对-胍基苯基酯和对-(胍基甲基)苯基酯,作为用于酶促肽合成的酰基供体组分。分析了这些酯对牛和灰链霉菌(SG)胰蛋白酶的动力学行为。基于底物的空间特征,讨论了这些酶的活性位点对催化效率的空间需求。发现这些底物容易与氨基酸对硝基苯胺偶联以产生肽。SG胰蛋白酶是所测试的酶(牛,猪和SG胰蛋白酶)中最有效的催化剂。