May act as a signaling scaffold protein that senses intracellular calcium. Can modulate ligand-induced internalization of ADORA2A and coupling efficiency of mGluR5/GRM5; for both receptors may regulate signaling activity such as promoting MAPK1/3 (ERK1/2) activation.
Cytoplasm . Cell projection, dendrite . Cell projection, axon . Cell membrane . Colocalizes with ADORA2A and/or mGluR5/GRM5 at the plasma membrane (PubMed:17689978, PubMed:19694902). Found in neuronal somata (PubMed:26843217). Detected in the cytoplasm of striatal neurons, at postsynaptic sites, filling dendritic shafts and spines, and at presynaptic sites, filling axon terminals (By similarity). .
Expressed in brain. Expressed in the spinal dorsal horn with especially strong expression in lamina IIi; found in excitory synaptic boutons and in ependymal cells (at protein level).
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