THE EFFECT OF OXYGEN RADICALS ON PROTEOLYSIS IN ISOLATED OAT CHLOROPLASTS

被引：22

作者：

CASANO, LM

TRIPPI, VS

机构：

[1] Laboratorio de Fisiologia Vegetal (IMBIV), Facultad de Ciencias Exactas, Fisicas y Naturales, Universidad National de Cordoba, (5000) Cordoba

来源：

PLANT AND CELL PHYSIOLOGY | 1992年 / 33卷 / 03期

关键词：

ACTIVE OXYGEN; CHLOROPLASTS; PROTEOLYSIS;

D O I：

10.1093/oxfordjournals.pcp.a078259

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

When chloroplasts isolated from oat leaves were incubated in the light, proteolysis and the activity of an acid endopeptidase increased. The increases were suppressed by 5 mM mannitol, an hydroxyl radical scavenger. The proteolysis and the endopeptidase also increased when chloroplasts were treated with Asc-Fe system, which can generate hydroxyl radical. In the polypeptides contained in chloroplasts, the hydrolysis of seven polypeptides was promoted by the treatment with Asc-Fe. Results suggest that oxygen radicals might mediate the light- and oxygen-induced proteolysis.

引用

页码：329 / 332

页数：4

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