Synaptic Systems

Cat. No.: 107 111BT

Amount: 100 µg

Price: $465.00

WB

Background

Rab 3 is a member of the Rab protein family that belongs to the ras-related superfamily of small monomeric GTPases. Four related isoforms of Rab 3 are known (Rab 3a, 3b, 3c, and 3d). Rab 3a and 3c are predominantly expressed in neurons and neuroendocrine cells where they are localized to synaptic vesicles. Unlike the integral membrane proteins of synaptic vesicles, Rab 3a/c is absent from the Golgi complex and thus does not result in immunostaining of the axo-dendritic region as sometimes seen with e.g. synaptophysin, synaptobrevin/VAMP, or synaptogyrin.
Rab 3b and 3d are expressed in non-neuronal tissues such as adipocytes and the exocrine pancreas (3d). It has been shown that overexpression of Rab 3 inhibits Ca²⁺ regulated excocytosis and converts it into an constitutive Ca²⁺ independent exocytosis mechanism.

1 ) Geppert M et al., Annu. Rev. Neurosci. (1998)
2 ) Jahn R et al., Annu. Rev. Neurosci. (1994)
3 ) Geppert M et al., Nature (1997)
4 ) Südhof TC et al., Nature (1995)
5 ) Fischer von Mollard G et al., Eur. J. Cell Biol. (1994)
6 ) Chen X et al., J. Biol. Chem. (2003)
7 ) Millar AL et al., Histol. Histopathol. (2002)
8 ) Pavlos NJ et al., J. Mol. Endocrinol. (2001)
9 ) Lin CG et al., Biochem. J. (1997)
10 ) Fischer von Mollard G et al., J. Biol. Chem. (1994)

Protocols

WB

IP

Standard protocol

ICC

Other products for this target

Cat. No. 107 111BT	100 µg purified IgG, lyophilized, labeled with Biotin. Biotin is a small vitamin B complex molecule. Its small size minimizes interference with antibody binding sites and allows for efficient conjugation without compromising antibody functionality. Biotin conjugated antibodies can be easily detected with Avidin/Streptavidin based secondary detection systems. The streptavidin-biotin bond is one of the strongest non-covalent biological bonds known. For reconstitution add 100 µl H₂O to get a 1mg/ml solution in PBS. Then aliquot and store at -20°C to -80°C until use. Antibodies should be stored at +4°C when still lyophilized. Do not freeze!
Applications	WB: 1 : 1000 (AP staining) gallery IP: yes ICC: 1 : 1000 up to 1 : 2000 IHC: not recommended IHC-P: not tested yet ELISA: Western blot (WB); separation of proteins by PAGE and subsequent transfer to a membrane. Detection of target molecules is carried out with antibodies. Some antibodies require special sample preparation steps. For details, please refer to the “Remarks” section. Immunoprecipitation (IP); Immunoisolation or pulldown of a target molecule using an antibody. For details and product specific hints, please refer to the ”Remarks” section. Immunocytochemistry (ICC) on 4% PFA fixed cells. Immunoreactivity is usually revealed by fluorescence. Some antibodies require special fixation methods. For details, please refer to the “Remarks” section. Immunohistochemistry (IHC) on 4% PFA perfusion fixed tissue with 24h PFA post fixation. Immunoreactivity is usually revealed by fluorescence or a chromogenic substrate. Some antibodies require special fixation methods or antigen retrieval steps. For details, please refer to the ”Remarks” section. Immunohistochemistry (IHC-P) of formalin fixed, paraffin embedded (FFPE) tissue (some antibodies require special antigen retrieval steps, please refer to the ”Remarks” section). Immunoreactivity is usually revealed by fluorescence or a chromogenic substrate. Enzyme-linked immunosorbent assay (ELISA); a frequently employed method to quantify target-molecules in solution. The detection of some proteins requires special solubilization steps. For further information, please refer to the „Remarks“ section.
Label	biotin
Clone	42.2
Subtype	IgG1 (κ light chain)
Immunogen	Recombinant protein corresponding to AA 1 to 220 from rat Rab3a (UniProt Id: P63012)
Epitop	AA 191 to 220 from rat Rab3a (UniProt Id: P63012)
Reactivity	Reacts with: human (P20336), rat (P63012), mouse (P63011), mammals. Other species not tested yet.
Specificity	K.O. validated
Data sheet	107_111bt.pdf

Rab3a antibody - 107 111BT K.O.