GAPex 5 peptide (ab74478)

Product Name 

GAPex 5 peptide

Product type 

Proteins and Peptides

Peptide 

Synthetic peptide derived from within residues 1300 - 1400 of Mouse GAPex 5.This peptide was used as an immunogen for ab65929 - GAPex 5 antibody.

Research areas 

Signal Transduction >> Metabolism >> Energy Metabolism
Signal Transduction >> Signaling Pathway >> G Protein Signaling >> Small G Proteins >> Regulators

Relevance 

GAPex 5 plays a role in several processes such as endocytosis, insulin receptor internalisation and LC2A4/GLUT4 trafficking. It acts as both a GTPase-activating protein (GAP) and a guanine nucleotide exchange factor (GEF). GAPex 5 is a GEF for the small G protein Rab31, promoting the exchange of GDP bound to Rab31 for GTP and thus regulating LC2A4/GLUT4 trafficking. In the absence of insulin, GAPex 5 maintains Rab31 in an active (GTP-bound) state, thereby promoting a futile cycle between LC2A4/GLUT4 storage vesicles and early endosomes, keeping LC2A4/GLUT4 inside the cells. Following insulin stimulation, GAPex 5 is translocated to the plasma membrane, enabling the release of LC2A4/GLUT4 from the intracellular storage vesicles. GAPex 5 is also involved in EGFR trafficking and degradation, and also has GEF activity for Rab5 and GAP activity for Ras.

Purity 

70 - 90% by HPLC

Storage buffer 

Preservative: None
Constituents: 0.001% Tween 20, 30mM HEPES, 2mM EDTA, 150mM Sodium chloride, pH 6.75

Form 

Liquid

Concentration 

1.000 mg/ml

Storage instructions 

Shipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.

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