Product nameAnti-GEF H1 (phospho S885) antibody
See all GEF H1 primary antibodies
DescriptionRabbit polyclonal to GEF H1 (phospho S885)
Specificityab74156 detects endogenous levels of GEF H1 only when phosphorylated at serine 885.
Tested applicationsSuitable for: WB, ELISAmore details
Species reactivityReacts with: Human
Predicted to work with: Mouse
Synthetic phosphopeptide derived from human GEF H1 around the phosphorylation site of serine 885 (R-R-SP-L-P).
- Extracts from HeLa cells treated with TSA (400nM, 24hours) and Jurkat cells treated with forskolin (40nM, 30mins).
Storage instructionsShipped at 4°C. Store at -20°C. Stable for 12 months at -20°C.
Storage bufferpH: 7.40
Preservative: 0.02% Sodium azide
Constituents: 50% Glycerol, 0.87% Sodium chloride, PBS
Without Mg2+ and Ca2+
Concentration information loading...
PurityImmunogen affinity purified
Purification notesab74156 was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific phosphopeptide. The antibody against non-phosphopeptide was removed by chromatography using non-phosphopeptide corresponding to the phosphorylation site.
Our Abpromise guarantee covers the use of ab74156 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|WB||1/500 - 1/1000. Predicted molecular weight: 120 kDa.|
FunctionActivates Rho-GTPases by promoting the exchange of GDP for GTP. May be involved in epithelial barrier permeability, cell motility and polarization, dendritic spine morphology, antigen presentation, leukemic cell differentiation, cell cycle regulation, and cancer. Binds Rac-GTPases, but does not seem to promote nucleotide exchange activity toward Rac-GTPases, which was uniquely reported in PubMed:9857026. May stimulate instead the cortical activity of Rac. Inactive toward CDC42, TC10, or Ras-GTPases. Forms an intracellular sensing system along with NOD1 for the detection of microbial effectors during cell invasion by pathogens. Required for RHOA and RIP2 dependent NF-kappaB signaling pathways activation upon S.flexneri cell invasion. Involved not only in sensing peptidoglycan (PGN)-derived muropeptides through NOD1 that is independent of its GEF activity, but also in the activation of NF-kappaB by Shigella effector proteins (IpgB2 and OspB) which requires its GEF activity and the activation of RhoA.
Sequence similaritiesContains 1 DH (DBL-homology) domain.
Contains 1 PH domain.
Contains 1 phorbol-ester/DAG-type zinc finger.
DomainThe DH (DBL-homology) domain interacts with and promotes loading of GTP on RhoA.
The PH (pleckstrin-homology) domain is involved in microtubule binding and targeting to tight junctions.
modificationsPhosphorylation of Ser-886 by PAK1 induces binding to protein 14-3-3 zeta, promoting its relocation to microtubules and the inhibition of its activity. Phosphorylated by STK6 and CDK1 during mitosis, which negatively regulates its activity. Phosphorylation by MAPK1 or MAPK3 increases nucleotide exchange activity. Phosphorylation by PAK4 releases GEF-H1 from the microtubules.
Cellular localizationCytoplasm. Cell junction > tight junction. Golgi apparatus. Cytoplasm > cytoskeleton > spindle. Cell projection > ruffle membrane. Localizes to the tips of cortical microtubules of the mitotic spindle during cell division, and is further released upon microtubule depolymerization. Recruited into membrane ruffles induced by S.flexneri at tight junctions of polarized epithelial cells.
- Information by UniProt
- AA408978 antibody
- ARHG2 antibody
- ARHG2_HUMAN antibody
All lanes : Anti-GEF H1 (phospho S885) antibody (ab74156) at 1/500 dilution
Lane 1 : Extracts from HeLa cells treated
with TSA (400nM, 24hours)
Lane 2 : Extracts from Jurkat cells treated with
forskolin (40nM, 30mins)
Lane 3 : Extracts from HeLa cells treated
with TSA (400nM, 24hours) with immunising phosphopeptide at 10 µg
Lysates/proteins at 30 µg per lane.
Predicted band size: 120 kDa
Observed band size: 115 kDa why is the actual band size different from the predicted?