Plays a role in mitochondrial and peroxisomal fission. Promotes the recruitment and association of the fission mediator dynamin-related protein 1 (DNM1L) to the mitochondrial surface. May be involved in regulation of synaptic vesicle membrane dynamics by recruitment of DNM1L to clathrin-containing vesicles.
Subcellular locations: Mitochondrion outer membrane, Peroxisome, Cytoplasmic vesicle, Secretory vesicle, Synaptic vesicle