Product Pathways - Neuroscience
GGA3 Antibody #4167
PhosphoSitePlus® protein, site, and accession data: GGA3
| Applications | Reactivity | Sensitivity | MW (kDa) | Source |
|---|---|---|---|---|
| W IP | H M R | Endogenous | 90 | Rabbit |
Applications Key:
W=Western Blotting
IP=Immunoprecipitation
Reactivity Key:
H=Human
M=Mouse
R=Rat
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.
Protocols
Specificity / Sensitivity
GGA3 Antibody detects endogenous levels of total GGA3 protein. GGA3 Antibody can also detect a carboxy-terminal GGA3 fragment derived from caspase-mediated cleavage. The antibody may also cross-react with other proteins of unknown origin.
Source / Purification
Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Asp520 of human GGA3. Antibodies are purified by protein A and peptide affinity chromatography.
Western Blotting
Western blot analysis of extracts from mouse brain, Neuro2A and SH-SY5Y cells using GGA3 Antibody.
Background
GGA3 is a member of the GGA family of proteins which also includes GGA1 and GGA2. These proteins consist of four distinct segments: a VHS domain that binds the di-leucine sorting signal DXXLL; a GAT domain that binds Arf-GTP; a hinge region that recruits clathrin; and a GAE domain that has sequence similarity to γ-adaptin and recruits a number of proteins. Arf1-GTPase recruits GGA3 to the trans-Golgi network. GGAs sort acid hydrolases to the lysosome and are involved in transporting proteins containing the DXXLL signal from the Golgi complex to the endosome (1). During apoptosis or cerebral ischemia, GGA3 is cleaved by caspase-3 at Asp313, reducing GGA3 levels and lysosomal degradation of β-secretase (BACE). The resulting elevated amount and activity of BACE plays a role in amyloid-β (Aβ) production, consistent with BACE elevation and Aβ accumulation in Alzheimer’s Disease (2).
Application References
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For Research Use Only. Not For Use In Diagnostic Procedures.
