Plays a role in intracellular protein trafficking and degradation (By similarity). May regulate CFTR chloride currents and acid-induced ASIC3 currents by modulating cell surface expression of both channels (By similarity). May also regulate the intracellular trafficking of the ADR1B receptor (By similarity). May play a role in autophagy (By similarity). Together with MARCHF2 mediates the ubiquitination and lysosomal degradation of CFTR (By similarity). Overexpression results in CFTR intracellular retention and degradation in the lysosomes (By similarity).
Subcellular locations: Cytoplasm, Golgi apparatus membrane, Golgi apparatus, Trans-Golgi network membrane, Synapse, Postsynaptic density, Cell projection, Dendrite
Enriched in synaptosomal and postsynaptic densities (PSD) fractions. Expressed in cell bodies and dendrites of Purkinje cells. Localized at the trans-Golgi network (TGN) of spermatids and the medulla of round spermatides (By similarity).