AP-3 complex subunit delta-1 (AP3D1)

Part of the AP-3 complicated, an adaptor-related complex that's not clathrin-associated. The complex is associated with the Golgi region as well as more peripheral structures.

It facilitates the budding of vesicles from the Golgi membrane and may be directly involved in trafficking to lysosomes. Involved in process of CD8+ T-cell and NK cell degranulation (PubMed:26744459).