a plasma membrane-associated member of the Rho-GTPase family. Plays a key role in cytoskeletal reorganization, membrane trafficking, transcriptional regulation and cell growth and development. GTP binding stimulates its activity. Phosphorylation by Akt may inhibit GTP binding of Rac1, therefore attenuating the downstream signal transduction pathway. Found in a trimeric complex composed of DOCK1 and ELMO1, which plays a central role in phagocytosis of apoptotic cells. Two alternatively spliced isoforms have been described. Note: This description may include information from UniProtKB.
Protein type: Motility/polarity/chemotaxis; G protein; G protein, monomeric (Rho)
Cellular Component: extrinsic to plasma membrane; lamellipodium; melanosome; plasma membrane; cytosol; phagocytic cup
Molecular Function: GTPase activity; protein binding; enzyme binding; GTP binding; GTP-dependent protein binding; thioesterase binding
Biological Process: axon guidance; viral reproduction; nerve growth factor receptor signaling pathway; apoptosis; cell-matrix adhesion; cell motility involved in cell locomotion; regulation of cell migration; localization within membrane; actin filament polymerization; small GTPase mediated signal transduction; response to wounding; inflammatory response; cell adhesion; regulation of hydrogen peroxide metabolic process; lamellipodium biogenesis; embryonic olfactory bulb interneuron precursor migration; platelet activation; intercellular junction assembly and maintenance; anatomical structure morphogenesis; Wnt receptor signaling pathway, planar cell polarity pathway; dendrite morphogenesis; positive regulation of phosphoinositide 3-kinase activity; positive regulation of Rho protein signal transduction; engulfment of apoptotic cell; regulation of defense response to virus by virus; hyperosmotic response; regulation of small GTPase mediated signal transduction; negative regulation of interleukin-23 production; positive regulation of actin filament polymerization; organization of an anatomical structure; auditory receptor cell morphogenesis; T cell costimulation; ruffle organization and biogenesis; cerebral cortex radially oriented cell migration; negative regulation of receptor-mediated endocytosis; blood coagulation; cell motility
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.