Heterotrimeric G-protein regulatory circuits in plants: Conserved and novel mechanisms

Plant Signaling & Behavior
Sona Pandey

Abstract

ARTICLE ADDENDUM Efficient activation and deactivation of Gα protein is critical for the regulation of heterotrimeric G-protein mediated signaling pathways. While the core G-protein components and their activation/deactivation chemistries are broadly conserved throughout the eukaryotic evolution, their regulatory mechanisms seem to have been rewired in plants to meet specific needs. Plants such as Arabidopsis, which have a limited number of G-protein components and their regulators, offer a unique opportunity to dissect the mechanistic details of distinct signaling pathways. We have recently established an interaction between the regulator of G-protein signaling 1 (RGS1) and phospholipase Dα1 (PLDα1); 2 of the GTPase activity accelerating proteins (GAPs) of the Arabidopsis Gα protein, GPA1. We now show that phosphatidic acid (PA), a key product of PLDα1 activity, can bind with and modulate the GAP activity of RGS1, uncovering a molecular link between lipid and G-protein signaling and its role in providing the specificity of response regulation.

References

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Mar 5, 2016·The Plant Journal : for Cell and Molecular Biology·Swarup Roy Choudhury, Sona Pandey
Feb 6, 2017·The Plant Journal : for Cell and Molecular Biology·Swarup Roy Choudhury, Sona Pandey

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Citations

Nov 28, 2018·Journal of Experimental Botany·Chen-Li ZhongJian-Zhong Liu
Apr 18, 2019·Bioinformatics·Gregory Kucherov
May 1, 2019·Annual Review of Plant Biology·Sona Pandey
Feb 9, 2020·The Plant Journal : for Cell and Molecular Biology·Swarup Roy ChoudhurySona Pandey
Jan 29, 2019·Plant & Cell Physiology·A A Lavell, C Benning
Aug 28, 2021·International Journal of Molecular Sciences·Ying LiuNa Zhang

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Methods Mentioned

BETA
GTPase
transgenic

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