a small GTPase of the Rho-subfamily, which regulates signaling pathways that control diverse cellular functions including cell morphology, migration, endocytosis and cell cycle progression. Causes the formation of thin, actin-rich surface projections called filopodia. The oncoprotein Dbl specifically catalyzes the dissociation of GDP from this protein. Regulate actin polymerization through its direct binding to Neural Wiskott-Aldrich syndrome protein (N-WASP), which subsequently activates Arp2/3 complex. Interacts with DOCK9 which activates it by exchanging GDP for GTP. Interacts with PARD6A, PARD6B and PARD6G in a GTP-dependent manner. Part of a complex with PARD3, PARD6A or PARD6B and PRKCI or PRKCZ. Interacts with CDC42EP4.Alternative splicing of this gene results in at least two transcript variants. Note: This description may include information from UniProtKB.
Protein type: G protein; G protein, monomeric, Rho; Motility/polarity/chemotaxis; G protein, monomeric
Molecular Function: apolipoprotein A-I receptor binding; GTP binding; GTP-dependent protein binding; GTPase activity; identical protein binding; mitogen-activated protein kinase kinase kinase binding; protein binding; protein kinase binding; Rho GDP-dissociation inhibitor binding; thioesterase binding
Biological Process: actin cytoskeleton organization and biogenesis; actin filament bundle formation; blood coagulation; ephrin receptor signaling pathway; establishment and/or maintenance of apical/basal cell polarity; establishment and/or maintenance of cell polarity; establishment of Golgi localization; filopodium formation; Golgi organization and biogenesis; hair follicle morphogenesis; heart contraction; keratinization; macrophage differentiation; multicellular organism growth; negative regulation of epidermal growth factor receptor signaling pathway; negative regulation of protein complex assembly; neuron fate determination; nuclear migration; positive regulation of cell growth; positive regulation of cytokinesis; positive regulation of DNA replication; positive regulation of JNK cascade; positive regulation of muscle cell differentiation; positive regulation of neuron apoptosis; positive regulation of peptidyl-serine phosphorylation; positive regulation of phosphoinositide 3-kinase activity; positive regulation of pseudopodium formation; positive regulation of synapse structural plasticity; protein transport; protein ubiquitination; regulation of attachment of spindle microtubules to kinetochore; regulation of filopodium formation; regulation of mitosis; regulation of protein catabolic process; regulation of protein heterodimerization activity; regulation of protein kinase activity; regulation of protein stability; regulation of small GTPase mediated signal transduction; small GTPase mediated signal transduction; sprouting angiogenesis; substantia nigra development; T cell costimulation; vascular endothelial growth factor receptor signaling pathway; Wnt receptor signaling pathway through beta-catenin; Wnt receptor signaling pathway, planar cell polarity pathway
LTP: 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.