Involved in normal synaptic function through regulation of Ca(2+) influx and neurotransmitter release in photoreceptor synaptic terminals and in auditory transmission. Modulator of CACNA1D and CACNA1F, suppressing the calcium-dependent inactivation and shifting the activation range to more hyperpolarized voltages (By similarity).
Subcellular locations: Cytoplasm, Presynapse
Found in rod spherules and cone pedicles of the presynapses from both types of photoreceptors.
Expressed in retina and in the inner hair cells (IHC) of the cochlea.