《植物生理学报》 2010, 46(4): 309-316

植物异三聚体 G 蛋白研究进展

朱莺, 黄继荣*

中国科学院上海生命科学研究院植物生理生态研究所, 植物分子遗传国家重点实验室, 上海 200032

通信作者：黄继荣；E-mail: huangjr@sibs.ac.cn；Tel: 021-54924145

摘　要：

异三聚体鸟嘌呤核苷结合蛋白(简称G 蛋白)是真核细胞中保守的信号转导分子, 通常与G蛋白偶联受体一起将细胞 外信号传递到胞质中。许多研究表明植物 G 蛋白介导的信号转导途径在光、激素、糖等响应过程中发挥着精细的调控作 用。本文重点介绍近年来植物 G 蛋白在复合体组成、生化特性及其工作模式等方面的研究进展。

关键词：异三聚体G蛋白; 鸟嘌呤核苷循环; 信号转导; 拟南芥; 水稻

收稿：2010-03-16   修定：2010-03-22

Recent Progresses in Plant Heterotrimeric G-Proteins

ZHU Ying, HUANG Ji-Rong*

National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China

Corresponding author: HUANG Ji-Rong; E-mail: huangjr@sibs.ac.cn; Tel: 021-54924145

Abstract:

Heterotrimeric GTP-binding proteins (G-proteins) are signal transduction molecules conserved in eukaryotic cells, and usually function with G-protein-coupled receptors to transduce extracellular signals into the cytoplasm. In plants, G-proteins have been demonstrated to play fine regulatory roles in responses to light, hormones, glucose, etc. This review will focus on the recent progresses in the complex constitution, biochemical properties and working models of plant G-proteins.

Key words: heterotrimeric G-proteins; guanine nucleotide cycling; signal transduction; Arabidopsis thaliana; rice