The Ras-related superfamily of guanine nucleotide binding proteins, which includes the R-Ras, Rap, Ral/Rec and Rho/Rab superfamilies exhibit 30-60% homology with Ras p21. Accumulating data suggests an important role for Rab proteins, either in endocytosis or in biosynthetic protein transport. The transport of newly synthesized proteins from the endoplasmic reticulum to various stacks of the Golgi complex and to secretory vesicles involves at each stage the movement of carrier vesicles, a process that appears to involve Rab protein function. Rab 8B (Ras-related protein Rab-8B) is a 207 amino acid lipid anchor that localizes to the cytoplasmic side of the cell membrane and belongs to the Rab family and small GTPase superfamily. Rab 8B may be involved in neurotransmitter release and vesicular trafficking, and is encoded by a gene located on human chromosome Rab 8B and mouse chromosome 9 C.
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Protein Aliases: FLJ38125; RAB-8b protein; RAB44, member RAS oncogene family; Ras-related protein Rab-8B
Gene Aliases: 5930437D16; D330025I23Rik; RAB8B