Structure-activity relationship of the ficin hydrolysis of phenyl hippurates. Comparison with papain, actinidin, and bromelain
作者:Angelo Carotti、Giovanni Casini、Corwin Hansch
DOI:10.1021/jm00377a009
日期:1984.11
A study of the hydrolysis of 30 substituted-phenyl hippurates by the enzyme ficin has been made. From the results the following quantitative structure--activity relationship (QSAR) has been derived: log 1/Km = 0.79 pi'3 + 0.58 sigma + 0.28 MR4,5 + 3.70. In this expression Km is the Michaelis constant, pi'3 refers to the more hydrophobic of the two meta substituents, and MR4,5 is the molar refractivity
已经研究了丝氨酸蛋白酶水解30个取代的苯基马尿酸酯的方法。从结果得出以下定量结构-活性关系(QSAR):log 1 / Km = 0.79 pi'3 + 0.58 sigma + 0.28 MR4,5 + 3.70。在该表达式中,Km是米氏常数,pi'3表示两个间位取代基中的疏水性更高,MR4,5是在苯环的4位和5位上的取代基的摩尔折射率。将此QSAR与木瓜蛋白酶,猕猴桃素,菠萝蛋白酶B和菠萝蛋白酶D的QSAR进行了比较。