Transport protein involved in the redistribution of lysosomes to the peri-Golgi region (PubMed:27113757). Plays a role in the maturation of phagosomes that engulf pathogens, such as S.aureus and M.tuberculosis (PubMed:21255211). Plays a role in the fusion of phagosomes with lysosomes (PubMed:21255211). Acts also as a positive regulator of hedgehog signaling and regulates ciliary function (By similarity). Interacts with RILP. Recruited to phagosomes containing S.aureus or M.tuberculosis (PubMed:21255211). Belongs to the small GTPase superfamily. Rab family.