Rab proteins belong to the Ras small GTPase superfamily. The GTP-binding Rab3 subfamily has 4 known isoforms: 3A, 3B, 3C, and 3D (Schluter et al., 2004). These proteins are expressed in highest concentrations in brain and endocrine tissues and involved in regulated exocytosis of hormones and neurotransmitters (Coppola et al., 2002). Specifically, Rab3’s are thought to play a key role in presynaptic vesicle trafficking and priming (Schluter et al., 2006).1) Schluter OM, Schmitz F, Jahn R, Rosenmund C, Sudhof TC (2004) A Complete Genetic Analysis of Neuronal Rab3 Function. J Neuroscience 24(29):6629-6637
Immunogen
Peptide corresponding to amino acid residues from the N-terminal region of rat Rab 3, conjugated to keyhole limpet hemocyanin (KLH).