Guanine nucleotide-exchange proteins (GEPs) accelerate replacement of bound GDP with GTP and thereby activate ADP-ribosylation factors (ARFs), a family of guanine nucleotide-binding proteins that play an important role in intracellular vesicular trafficking.
GEPs comprise two major families, large GEPs that are inhibited by brefeldin A (BFA), a protein that effects golgi structure, and a group of smaller GEPs that are insenstive to BFA.
Two genes for GEPs found on human chromosomes 8 and 20 encode BFA sensitive GEPs of ~200 kDa, designated BIG1 and BIG2.
Both GEPS contain a sec7 domain that is responsible for their brefeldin inhibition and also their catalytic activity.
In vivo, BIG1 and BIG2 exist in macromolecular complexes that move between the golgi membranes and cytosol.
BIG2 associates with PKA regulatory subunits, implying that BIG2 may act as an A kinase-anchoring protein (AKAP) that could coordinate the cAMP and ARF regulatory pathways.
Applications:Suitable for use in Immunofluorescence, Western Blot, Immunohistochemistry.
Other applications not tested.
Recommended Dilution:Western Blot: 1:500-1:1000Immunohistochemistry: 1:50-1:200Immunofluorescence: 1:50-1:200Optimal dilutions to be determined by the researcher.
Storage and Stability:May be stored at 4°C for short-term only.
Aliquot to avoid repeated freezing and thawing.
Store at -20°C.
Aliquots are stable for 12 months after receipt.
For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
仕様
Size：100ul
Host：rabbit
Source Antibody：human
Grade：Affinity Purified
Purity：Purified by immunoaffinity chromatography.
Form：Supplied as a liquid PBS, 0.05% sodium azide, pH 7.2.
Specificity：Recognizes endogenous levels of BIG2. Species Crossreactivity: Human, mouse, rat
Isotype：IgG
Calc Applications Abbrev：IF IHC WB
Calc Crossreactivity：Hu Mo Rt
Immunogen：Synthetic peptide corresponding to amino acids 1500-1550 of Human BIG2.
