Stimulates the GTPase activity of RAP2A. Promotes reorganization of the actin cytoskeleton and recruits DLG4 to F-actin. Contributes to the regulation of dendritic spine morphogenesis (By similarity).
Cytoplasm, cytoskeleton . Cell junction, synapse, postsynaptic density . Cell junction, synapse, synaptosome . Associated with the actin cytoskeleton. Detected at synapses and dendritic spines of cultured hippocampal neurons (By similarity). .
Widely expressed.
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