Subunit of clathrin-associated adaptor protein complex 1 that plays a role in protein sorting in the late-Golgi/trans-Golgi network (TGN) and/or endosomes. The AP complexes mediate both the recruitment of clathrin to membranes and the recognition of sorting signals within the cytosolic tails of transmembrane cargo molecules. In association with AFTPH/aftiphilin in the aftiphilin/p200/gamma-synergin complex, involved in the trafficking of transferrin from early to recycling endosomes, and the membrane trafficking of furin and the lysosomal enzyme cathepsin D between the trans-Golgi network (TGN) and endosomes (By similarity).
Subcellular locations: Golgi apparatus, Cytoplasmic vesicle, Clathrin-coated vesicle membrane, Cytoplasm, Cytoplasm, Perinuclear region, Cytoplasmic vesicle, Clathrin-coated vesicle, Membrane, Clathrin-coated pit
Component of the coat surrounding the cytoplasmic face of coated vesicles located at the Golgi complex (By similarity). Co-localizes with AFTPH/aftiphilin in the cytoplasm (By similarity).