Plays a role in regulating the structure of the Golgi apparatus. Interacts with DLG1 (By similarity). Interacts with ARF6 (GTP-bound form) (PubMed:22841714). Recruited to tight junctions (TJ) during late stages of maturation of the TJ complexes. Excluded from adherens junctions and desmosomes. Widely expressed including in adult thymus, heart, lung, liver, small intestine, kidney, spleen, testis and skeletal muscle and in embryonic brain but not detected in adult brain (at protein level).