THRESHOLD EFFECT OF CAFFEIC ACID ON PEROXIDASE-CATALYZED OXIDATION OF INDOLE-3-ACETIC-ACID

被引：12
|
作者：
KRYLOV, SN
KRYLOVA, SM
RUBIN, LB
机构：
[1] Institute for Nuclear Physics Research, Moscow State University, GSP, Moscow
来源：
PHYTOCHEMISTRY | 1993年 / 33卷 / 01期
关键词：
HORSERADISH PEROXIDASE; OXIDATION OF INDOLE-3-ACETIC ACID; INHIBITION; FREE RADICAL CHAIN REACTION; CAFFEIC ACID;
D O I：
10.1016/0031-9422(93)85387-7
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The hitherto unknown threshold effect for the inhibition of the peroxidase-catalysed aerobic oxidation of indole-3-acetic acid (IAA) by caffeic acid is described. It is shown that caffeic acid does not affect peroxidase and IAA. To explain the threshold effect it is supposed that for the given experimental conditions, the oxidation of IAA is an enzymatic, free radical, chain branched reaction and caffeic acid acts as a trap of free radicals participating in the chain reaction.
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页码：9 / 12
页数：4
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