Influence of solvent viscosity on the rate of hydrolysis of dipeptides by carboxypeptidase Y
作者:Yoshifumi Kanosue、Satoshi Kojima、Katsuo Ohkata
DOI:10.1002/poc.752
日期:2004.5
The influence of solvent viscosity on the rate of enzymatic hydrolysis of a series of dipeptides (Z-Phe-Gly, Z-Phe-Sar, Z-Phe-Ala, Z-Phe-NMeAla, Z-Phe-Aib and Z-Phe-Pro) by carboxypeptidase Y was investigated. The effect of solvent viscosity on the enzymatic hydrolysis revealed that whereas all kcat values decreased with viscosity, those of the N-alkyl peptides decreased more than those of the N-H
溶剂粘度对一系列二肽(Z-Phe-Gly,Z-Phe-Sar,Z-Phe-Ala,Z-Phe-NMeAla,Z-Phe-Aib和Z-Phe的酶水解速率的影响) (-Pro)通过羧肽酶Y进行了研究。溶剂粘度对酶促水解的影响表明,尽管所有的k cat值均随粘度降低,但N-烷基肽的降幅比N -H肽的降幅更大。动力学行为暗示了涉及酶的构象变化的“诱导适应”过程。版权所有©2004 John Wiley&Sons,Ltd.