光呼吸途径中两种转氨酶的研究进展

左照江, 朱晔荣, 白艳玲, 王勇*
南开大学生命科学学院, 天津300071

通信作者:王勇;E-mail: wangyong@nankai.edu.cn;Tel: 022-23504382

摘 要:

植物丝氨酸:乙醛酸氨基转移酶(SGAT)与谷氨酸:乙醛酸氨基转移酶(GGAT)主要催乙醛酸的转氨反应, 是光呼吸途 径中的两种关键酶。此两种酶大都为二聚体, 在高等植物体内主要位于过氧化物酶体内, 而在真核藻类植物体内则位于线 粒体内, 对植物的生长发育与抗逆性具有重要影响。本文对 SGAT 与 GGAT 在植物光合作用、氨基酸代谢和抗逆性等方 面的研究进展进行了综述, 以期对 SGAT 与 GGAT 的研究有所帮助。

关键词:丝氨酸:乙醛酸氨基转移酶; 谷氨酸:乙醛酸氨基转移酶; 光合作用; 氨基酸代谢; 抗逆性

收稿:2010-04-08   修定:2010-06-11

资助:国家自然科学基金(30870185)。

Research Advances in Two Aminotransferases of Photorespiration

ZUO Zhao-Jiang, ZHU Ye-Rong, BAI Yan-Ling, WANG Yong*
College of Life Sciences, Nankai University, Tianjin 300071, China

Corresponding author: WANG Yong; E-mail: wangyong@nankai.edu.cn; Tel: 022-23504382

Abstract:

The transamination of glyoxylate in plants is catalyzed by serine:glyoxylate aminotransferase (SGAT) and glutamate:glyoxylate aminotransferase (GGAT), which are key enzymes in photorespiration. SGAT and GGAT are mostly dimmer, locate in peroxisome in higher plants and mitochondrion in eukaryotic algae, and play an important role in growth, development, and stress resistance of plants. To aid in helping the study of SGAT and GGAT, the effects on photosynthsis, amino acid metabolism and stress resistance of the both aminotransferases were summarized in this paper.

Key words: serine:glyoxylate aminotransferase; glutamate:glyoxylate aminotransferase; photosynthsis; amino acid metabolism; stress resistance

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