Plays a redundant role in promoting the expression of calcium channel CACNA1S at the cell membrane, and thereby contributes to increased channel activity. Slows down the inactivation rate of the calcium channel CACNA1C.
Subcellular locations: Cytoplasm, Cytosol, Cell membrane, Cell membrane, Sarcolemma
Colocalizes with CACNA1C at the plasma membrane of transfected cells.