Structural highlights
Function
RAC7_ARATH Acts as a negative regulator of abscisic acid (ABA) responses.[1]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Arabidopsis thaliana RAC/ROP GTPases constitute a plant specific Rho GTPase family in the RAS superfamily, which has been implicated in numerous pivotal signalling cascades in plants. Research has shown that plants in some cases have evolved different modes of regulating Rho GTPase activity as compared to the equivalent systems in animals and yeast. In order to gain structural insight into plant signaling at the molecular level, we have determined the first crystal structure of a RAC-like GTPase belonging to the RAS superfamily from the plant kingdom. The structure of AtRAC7/ROP9 bound to GDP was solved at a resolution of 1.78 A. We have found that the structure of plant Rho GTPases is based upon a conserved G-domain architecture, but structural differences were found concerning the insert region and switch II region of the protein.
The crystal structure of Arabidopsis thaliana RAC7/ROP9: the first RAS superfamily GTPase from the plant kingdom.,Sormo CG, Leiros I, Brembu T, Winge P, Os V, Bones AM Phytochemistry. 2006 Nov;67(21):2332-40. Epub 2006 Sep 26. PMID:17005216[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Zheng ZL, Nafisi M, Tam A, Li H, Crowell DN, Chary SN, Schroeder JI, Shen J, Yang Z. Plasma membrane-associated ROP10 small GTPase is a specific negative regulator of abscisic acid responses in Arabidopsis. Plant Cell. 2002 Nov;14(11):2787-97. PMID:12417701 doi:10.1105/tpc.005611
- ↑ Sormo CG, Leiros I, Brembu T, Winge P, Os V, Bones AM. The crystal structure of Arabidopsis thaliana RAC7/ROP9: the first RAS superfamily GTPase from the plant kingdom. Phytochemistry. 2006 Nov;67(21):2332-40. Epub 2006 Sep 26. PMID:17005216 doi:10.1016/j.phytochem.2006.08.011
