Small GTP-binding proteins of the RAB family, such as RAB32, play essential roles in vesicle and granule targeting (Bao et al., 2002 [PubMed 11784320]).[supplied by OMIM
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RAB32 (NP_006825, 1 a.a. ~ 225 a.a) full-length human protein.
RAB32 (Ras-related protein) controls intracellular lipid accumulation in hepatocytes. Absence of it promotes the expression of ATGL (adipose triglyceride lipase) and thereby causes lipolysis. RAB32 is involved in hepatic steatosis. In melanogenesis, it is involved in the transport of important enzymes, such as tyrosinase and Tyrp1 (tyrosinase related protein 1). RAB32 also interacts with and is involved in localization of leucine-rich repeat kinase 2 (LRRK2), a protein associated with Parkinson′s disease. RAB32 is hypermethylated in microsatellite-unstable colon, gastric and endometrial adenocarcinomas.