Plasma membrane-associated small GTPase which cycles between an active GTP-bound and inactive GDP-bound state. In active state binds to a variety of effector proteins to regulate cellular responses, such as secretory processes, phagocytose of apoptotic cells and epithelial cell polarization. Augments the production of reactive oxygen species (ROS) by NADPH oxidase. Interacts with DOCK2, which may activate it. Hematopoietic specific. Regulated by guanine nucleotide exchange factors (GEFs) which promote the exchange of bound GDP for free GTP, GTPase activating proteins (GAPs) which increase the GTP hydrolysis activity, and GDP dissociation inhibitors which inhibit the dissociation of the nucleotide from the GTPase. Belongs to the small GTPase superfamily. Rho family. Note: This description may include information from UniProtKB.
Protein type: G protein, monomeric, Rho; Motility/polarity/chemotaxis; G protein, monomeric; G protein
Biological Process: platelet activation; G-protein coupled receptor protein signaling pathway; axon guidance; regulation of small GTPase mediated signal transduction; GTP catabolic process; small GTPase mediated signal transduction; positive regulation of cell proliferation; actin filament organization; cell projection biogenesis; signal transduction; blood coagulation; regulation of hydrogen peroxide metabolic process; bone resorption
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.