Protein
Voltage-dependent calcium channel gamma-5 subunit
Organism
Rattus norvegicus
Function
Regulates the gating properties of AMPA-selective glutamate receptors (AMPARs). Modulates their gating properties by accelerating their rates of activation, deactivation and desensitization. Displays subunit-specific AMPA receptor regulation. Shows specificity for GRIA1, GRIA4 and the long isoform of GRIA2. According to PubMed:18817736, shows only specificity for GRIA2 and specifically to the form of GRIA2 for which a single amino acid in the pore region has been edited from a glutamine to an arginine residue. Thought to stabilize the calcium channel in an inactivated (closed) state.
Similarity
Belongs to the PMP-22/EMP/MP20 family. CACNG subfamily.
Sequence
MSTCGRKALTLLSSVFAVCGLGLLGIAVSTDYWLYLEEGIILPQNQSTEVKMSLHSGLWRVCFLAGEERGRCFTIEYVMPMNSQMTSESTVNVLKMIRSATPFPLVSLFFMFIGFILSNIGHIRPHRTILAFVSGIFFILSGLSLVVGLVLYISSINDEMLNRTKDAETYFNYKYGWSFAFAAISFLLTESAGVMSVYLFMKRYTAEDMYRPHPGFYRPRLSNCSDYSGQFLHPDAWIRGRSPSDISSDASLQMNSNYPALLKCPDYDQMSSSPC