Heterotrimeric G-protein signaling in Arabidopsis

被引：9

作者：

Chen, Jin-Gui ^{[1
]}

机构：

[1] Univ British Columbia, Dept Bot, Vancouver, BC V6T 1Z4, Canada

来源：

PLANT SIGNALING & BEHAVIOR | 2008年 / 3卷 / 12期

基金：

加拿大自然科学与工程研究理事会;

关键词：

heterotrimeric G-proteins; GCR2; GPA1; G-protein-coupled receptor (GPCR); AtRGS1;

D O I：

10.4161/psb.3.12.6064

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：

Seven transmembrane G-protein-coupled receptors (GPCRs) are commonly used by eukaryotes to sense extracellular signals to switch on cellular responses through the activation of cognate heterotrimeric G-proteins. In Arabidopsis thaliana, GCR2 has been proposed as a GPCR for the plant hormone abscisic acid. On the other hand, biochemical analysis demonstrates that the sole Arabidopsis heterotrimeric G-protein a subunit, GPA1, is in the activated state (GTP-bound) by default, suggesting that the heterotrimeric G-proteins may act without any GPCRs.

引用

页码：1042 / 1045

页数：4

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