Seems to play a role in the regulation of RhoA GTPase by guanine nucleotide-binding alpha-12 (GNA12) and alpha-13 (GNA13) subunits. Acts as GTPase-activating protein (GAP) for GNA12 and GNA13, and as guanine nucleotide exchange factor (GEF) for RhoA GTPase. Activated G alpha 13/GNA13 stimulates the RhoGEF activity through interaction with the RGS-like domain. This GEF activity is inhibited by binding to activated GNA12 (By similarity). Mediates angiotensin-2-induced RhoA activation.
Specificity
Natural and recombinant Rat Rho guanine nucleotide exchange factor 1
Subcellular Location
Cytoplasm Membrane Translocated to the membrane by activated GNA13 or LPA stimulation.
"Cloning of a rat homologue of lsc, a mouse oncogene with structural similarities to the Dbl family of guanine nucleotide exchange factors." Steinbrenner H., Wuensche C., Seissler J. Submitted (1999-02) to the EMBL/GenBank/DDBJ databases
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