Stimulates GTP hydrolysis of members of the Rho family. Its action on RHOA activity and signaling is implicated in growth and stabilization of dendritic spines, and therefore in synaptic function. Critical for the stabilization of AMPA receptors at postsynaptic sites. Critical for the regulation of synaptic vesicle endocytosis at presynaptic terminals. Defects in OPHN1 are the cause of mental retardation X- linked OPHN1-related (MRXSO); formerly designated MRX60. MRXSO is a syndromic mental retardation. Patients present mental retardation associated with cerebellar hypoplasia and distinctive facial dysmorphism. Note: This description may include information from UniProtKB.
Protein type: GAP; GAP, Rac/Rho; Motility/polarity/chemotaxis