HYDROLYSIS OF 4-NITROPHENYL PHOSPHATE BY (AMINO ACIDATO)ZINC COMPLEXES

被引:5
|
作者
VILADKAR, S
AMALUDDIN, K
NATH, M
机构
关键词
D O I
10.1246/bcsj.66.2922
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Simple zinc complexes of glycine, histidine, and cysteine are proposed as evolutionary models for hydrolytic enzymes. Catalytic activity of (amino acidato)zinc complexes has been studied towards hydrolysis of 4-nitrophenyl phosphate at 40-degrees-C over the pH range 5.0-10.0 by monitoring release of p-nitrophenol at 405 nm. Detailed kinetic investigations on hydrolysis of ester catalyzed by zinc complexes are discussed through formation of (amino acidato)zinc-substrate complex. Mechanistic and evolutionary aspect of this study are discussed in relation to the esterase property of the zinc metalloenzymes.
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页码:2922 / 2926
页数:5
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