Rho GTPase-activating protein 22 (ARHGAP22)

Rho GTPase-activating protein involved in the signal transduction pathway that regulates endothelial cell capillary tube formation during angiogenesis. Acts as a GTPase activator for the RAC1 by converting it into an inactive GDP-bound state.

Inhibits RAC1-dependent lamellipodia formation. May also play a role in transcription regulation via its interaction with VEZF1, by regulating action of this endothelin-1 (EDN1) promoter (By similarity).