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You are here:Home » Antibodies » Antibodies-GTPase, Rab, Ras, Rho Proteins » Anti -Rab3A

Anti -Rab3A


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Clone Host Grade Applications
Polyclonal Rabbit Affinity Purified B
Rab3A is a 25kD GTP-binding protein implicated in neurotransmitter release (1). The geranylgeranyl groups at the carboxyl-terminus of Rab3A are essential for its association with synaptic vesicles, guanine nucleotide-dissociation factor (GDI), and for GTP binding (2). Rab3A is believed to regulate vesicle fusion through a cycle of GDP/GTP exchange and GTP hydrolysis, which is in turn modulated by GTPase activating protein (GAP), GDI, guanine nucleotide-releasing factor (GRF), and rabphilin (3). The dif-ferent guanine nucleotide binding states of Rab3A is postulated to affect its ability to associate or dissociate with membranes during synaptic vesicle recycling. Its GTP-bound form, which represents the active form of Rab3A, associates with membrane and regulates vesicle docking and fusion. Rab3A and its homolog, Rab3C, have been shown to be co-localized to and dissoci-ated from synaptic vesicles after the stimulation of exocytosis (3). Deletion of the Rab3A structural gene has minimal effect on the morphology of the nervous system and spontaneous and evoked synaptic currents (4). However, Rab3A knockout mice exhibited that an increased rate of synaptic depression after repeated stimulation, suggesting Rab3A is involved in maintaining a steady supply of vesicles for release.
Catalog #R0006-75A
ApplicationsWestern Blot (Colorimetric): 1ug/ml
Positive ControlsMouse Brain Tissue Extract
Clone TypePolyclonal
FormSupplied as a liquid in borate buffered saline, pH 8.2, 25mM sodium borate, 100mM boric acid, 75mM sodium chloride, 5mM EDTA disodium salt.
PurityPurified by immunoaffinity chromatography.
ImmunogenA 16 residue synthetic peptide (C)KQGPQLSDQQVPPHQD based on the human Rab3A (residues 202-217) with the cysteine (C) residue added and the peptide coupled to KLH.
SpecificityDetects an 25kD protein, corresponding to the apparent molecular mass of Rab3A on SDS-PAGE immunoblots, in samples from mouse and rat. The antibody specificity is confirmed in peptide inhibition immunoblotting studies.
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.

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