Required for the calcium-dependent exocytosis of signal sequence-containing cytokines such as CCL5. Probably acts in cooperation with the SNARE machinery (By similarity).
Subcellular locations: Cell membrane, Golgi apparatus membrane, Golgi apparatus, Trans-Golgi network membrane, Recycling endosome membrane, Cytoplasmic vesicle, Secretory vesicle, Synaptic vesicle membrane
Mainly localizes in Golgi apparatus membrane. Upon calcium-triggered exocytosis, it translocates to the cell membrane. Highly enriched in synaptic vesicles (By similarity).