Product nameAnti-HIF-1 alpha antibody [H1alpha67] - ChIP Grade
See all HIF-1 alpha primary antibodies
DescriptionMouse monoclonal [H1alpha67] to HIF-1 alpha - ChIP Grade
Tested applicationsSuitable for: IHC-P, IP, ChIP, IHC-Fr, Flow Cyt, ICC/IF, WBmore details
Species reactivityReacts with: Mouse, Rat, Human
Predicted to work with: Sheep, Rabbit, Cow, Pig, Ferret, Monkey
Fusion protein corresponding to Human HIF-1 alpha aa 400-550.
- Hela-DFO treated (0.5mM, 24h) Nuclear Lysate (ab180880) can be used as a positive control in WB.
HIF-1 alpha can be a difficult target to work with so we have compiled a summary of all the important information you need to know including useful tips. This can be found in the protocols tab or alternatively click here to download it.
For WB, we recommend using positive control samples such as DFO or CoCl2 treated nulcear cell lysates such as ab180880. Ensure cell lysis occurs quickly (within 2 mins) if removed from hypoxia. Loading a high amount of sample (>50 µg) and addition of protease inhibitors (e.g. ab65621) may also enhance detection.
This antibody clone is manufactured by Abcam. If you require a custom formulation or conjugation for your experiments, please contact firstname.lastname@example.org.
Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C. Avoid freeze / thaw cycle.
Storage bufferpH: 7.4
Preservative: 0.02% Sodium azide
Constituents: PBS, 6.97% L-Arginine
Concentration information loading...
PurityProtein A purified
ChIP Related Products
Our Abpromise guarantee covers the use of ab1 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|IHC-P||Use at an assay dependent concentration. Perform heat mediated antigen retrieval via the microwave method before commencing with IHC staining protocol.|
|IP||Use a concentration of 5 µg/ml.|
|ChIP||Use at an assay dependent concentration.|
|IHC-Fr||Use at an assay dependent concentration.|
|Flow Cyt||Use at an assay dependent concentration.
ab170192 - Mouse monoclonal IgG2b, is suitable for use as an isotype control with this antibody.
|ICC/IF||1/100 - 1/200.
|WB||Use a concentration of 5 µg/ml. Detects a band of approximately 120 kDa (predicted molecular weight: 92 kDa).
We recommend blocking for 1 hour with 5% milk in TBST and reducing to 2% milk in TBST for the primary and secondary antibody incubation steps. For primary antibody incubation, we recommend 2 hours at room temperature.
FunctionFunctions as a master transcriptional regulator of the adaptive response to hypoxia. Under hypoxic conditions activates the transcription of over 40 genes, including, erythropoietin, glucose transporters, glycolytic enzymes, vascular endothelial growth factor, and other genes whose protein products increase oxygen delivery or facilitate metabolic adaptation to hypoxia. Plays an essential role in embryonic vascularization, tumor angiogenesis and pathophysiology of ischemic disease. Binds to core DNA sequence 5'-[AG]CGTG-3' within the hypoxia response element (HRE) of target gene promoters. Activation requires recruitment of transcriptional coactivators such as CREBPB and EP300. Activity is enhanced by interaction with both, NCOA1 or NCOA2. Interaction with redox regulatory protein APEX seems to activate CTAD and potentiates activation by NCOA1 and CREBBP.
Tissue specificityExpressed in most tissues with highest levels in kidney and heart. Overexpressed in the majority of common human cancers and their metastases, due to the presence of intratumoral hypoxia and as a result of mutations in genes encoding oncoproteins and tumor suppressors.
Sequence similaritiesContains 1 basic helix-loop-helix (bHLH) domain.
Contains 1 PAC (PAS-associated C-terminal) domain.
Contains 2 PAS (PER-ARNT-SIM) domains.
DomainContains two independent C-terminal transactivation domains, NTAD and CTAD, which function synergistically. Their transcriptional activity is repressed by an intervening inhibitory domain (ID).
modificationsIn normoxia, is hydroxylated on Pro-402 and Pro-564 in the oxygen-dependent degradation domain (ODD) by EGLN1/PHD1 and EGLN2/PHD2. EGLN3/PHD3 has also been shown to hydroxylate Pro-564. The hydroxylated prolines promote interaction with VHL, initiating rapid ubiquitination and subsequent proteasomal degradation. Deubiquitinated by USP20. Under hypoxia, proline hydroxylation is impaired and ubiquitination is attenuated, resulting in stabilization.
In normoxia, is hydroxylated on Asn-803 by HIF1AN, thus abrogating interaction with CREBBP and EP300 and preventing transcriptional activation. This hydroxylation is inhibited by the Cu/Zn-chelator, Clioquinol.
S-nitrosylation of Cys-800 may be responsible for increased recruitment of p300 coactivator necessary for transcriptional activity of HIF-1 complex.
Requires phosphorylation for DNA-binding.
Sumoylated; by SUMO1 under hypoxia. Sumoylation is enhanced through interaction with RWDD3. Desumoylation by SENP1 leads to increased HIF1A stability and transriptional activity.
Ubiquitinated; in normoxia, following hydroxylation and interaction with VHL. Lys-532 appears to be the principal site of ubiquitination. Clioquinol, the Cu/Zn-chelator, inhibits ubiquitination through preventing hydroxylation at Asn-803.
The iron and 2-oxoglutarate dependent 3-hydroxylation of asparagine is (S) stereospecific within HIF CTAD domains.
Cellular localizationCytoplasm. Nucleus. Cytoplasmic in normoxia, nuclear translocation in response to hypoxia. Colocalizes with SUMO1 in the nucleus, under hypoxia.
- Information by UniProt
- ARNT interacting protein antibody
- ARNT-interacting protein antibody
- Basic helix loop helix PAS protein MOP1 antibody
All lanes : Anti-HIF-1 alpha antibody [H1alpha67] - ChIP Grade (ab1) at 5 µg/ml
Lane 1 :
HeLa nuclear extract lysate (ab150036) at 40 µg
Lane 2 :
Hela-DFO treated (0.5mM, 24h) Nuclear Lysate (ab180880) at 40 µg
Lane 3 : HeLa nuclear control at 40 µg
Lane 4 : HeLa nuclear DFO treated at 40 µg
Lane 5 :
Recombinant Human HIF-1 alpha protein (ab154478) at 0.001 µg
All lanes : Goat Anti-Mouse IgG H&L (HRP) preadsorbed (ab97040) at 1/10000 dilution
Performed under reducing conditions.
Predicted band size: 92 kDa
Exposure time: 20 minutes
We recommend using 5% milk in TBST as the blocking agent, decreasing to 2% milk in TBST during primary and secondary antibody incubation.
Blots were developed with Goat Anti-Mouse IgG H&L (HRP) preadsorbed (ab97040) secondary antibody
HIF-1 alpha was immunoprecipitated using 0.5 mg HeLa Nuclear DFO treated whole cell extract (ab180880), 5 µg of Mouse monoclonal to HIF-1 alpha and 50 µl of protein G magnetic beads (+). No antibody was added to the control (-).
The antibody was incubated under agitation with Protein G beads for 10 minutes, HeLa DFO treated whole cell extract lysate diluted in RIPA buffer was added to each sample and incubated for a further 10 minutes under agitation.
Proteins were eluted by addition of 40 µl SDS loading buffer and incubated for 10 minutes at 70°C; 10 µl of each sample was separated on a SDS PAGE gel, transferred to a nitrocellulose membrane, blocked with 5% BSA and probed with ab1.
Secondary: Goat polyclonal to mouse IgG light chain specific (HRP) at 1:20,000 dilution.
Band: 110 kDa; HIF1 alpha
Anti-HIF-1 alpha antibody [H1alpha67] - ChIP Grade (ab1) at 1/400 dilution + Human whole cell lysate (human lung adenocarcinoma cell line ADLC-5M2) treated for 16 hours with 100 micromolar deferoxamine (DFO) at 20 µg
Performed under reducing conditions.
Predicted band size: 92 kDa
Observed band size: 120 kDa why is the actual band size different from the predicted?
PVDF membrane was used and blocked for 16 hours in 5% milk.
ab1 staining HIF-1 alpha in rat infarct core striate tissue sections by Immunohistochemistry (IHC-P - paraformaldehyde-fixed, paraffin-embedded sections). Tissue was fixed with formaldehyde and antigen retrieval was by heat mediation in a citrate buffer. Samples were incubated with primary antibody (1/1000) for 1 hour at 25°C. An HRP-conjugated rabbit anti-mouse IgG whole molecule (1/200) was used as the secondary antibody.
ab1 staining HIF-1 alpha in mouse skin tissue sections by Immunohistochemistry. Tissue was fixed with formaldehyde and blocked with 10% serum for 30 minutes at 22°C; antigen retrieval was by heat mediation in a citrate buffer. Samples were incubated with primary antibody (1/100) for 1 hour at 25°C. An HRP-conjugated Goat anti-mouse was used as the secondary antibody.
ab1 staining HIF-1-alpha in MCF7 (Human breast adenocarcinoma cell line) cells treated with metformin hydrochloride ab12084, by ICC/IF. Decrease in HIF-1-alpha expression correlates with increased concentration of metformin hydrochloride, as described in literature.
The cells were incubated at 37°C for 24 hours in media containing different concentrations of ab120847 (metformin hydrochloride) in water, fixed with 4% formaldehyde for 10 minutes at room temperature and blocked with PBS containing 10% goat serum, 0.3 M glycine, 1% BSA and 0.1% tween for 2 hours at room temperature. Staining of the treated cells with ab1 (10 µg/ml) was performed overnight at 4°C in PBS containing 1% BSA and 0.1% tween. Goat Anti-Mouse IgG H&L (DyLight® 488) preadsorbed (ab96879) at 1/250 dilution was used as the secondary antibody. Nuclei were counterstained with DAPI and are shown in blue.
ab1 staining HIF-1 alpha in mouse liver tissue section by Immunohistochemistry (Frozen sections). Tissue samples were fixed with formaldehyde and permeabilized with 0.2% Triton-X100 before blocking with 2% BSA for 30 minutes at 20°C. The sample was incubated with primary antibody (1/200) for 9 hours at 4°C. An Alexa Fluor®555-conjugated Goat polyclonal to mouse IgG was used as secondary antibody at 1/200 dilution. DAPI was used to stain the cell nuclei (blue).
ab1 at 1/200 dilution staining HIF-1 alpha in human 293FT cells by Immunocytochemistry/ Immunofluorescence. Cells were fixed in formaldehyde, permeabilized in 0.5% Trition X-100 and blocked in 5% BSA for 1 hour at 25°C. The primary antibody was used at 1/200 dilution in PBS and incubated with sample at 4°C for 12 hours. An Alexa Fluor® 488 conjugated Goat polyclonal to mouse IgG was used as secondary at 1/500 dilution.
Flow cytometry using ab1. HeLa (Human epithelial cell line from cervix adenocarcinoma) cells were cultured untreated or with 1mM Deferoxamine (ab120727) for 24 hours to induce HIF-1-alpha protein levels. Cells were then trypsinized, fixed with paraformaldehyde and stained with ab1 (0.5 µg/mL). 1% BSA in PBS was used as the blocking buffer throughout. ab1 was labeled with and anti-mouse Alexa-Fluor® 488 dye. Unstained (black), untreated (red) and DFO treated (blue) cell traces are shown.
ChIP assays were performed using ab1 to verify the binding between HIF-1α and HREs. Primer 1 (P1) and primer 2 (P2) were designed to detect HREs1 and HREs2, respectively. PCR products were separated by gel electrophoresis on 2% agarose gel.
This product has been referenced in:
- Jin F et al. HIF-1a-induced miR-23a~27a~24 cluster promotes colorectal cancer progression via reprogramming metabolism. Cancer Lett 440-441:211-222 (2019). Read more (PubMed: 30393198) »
- Xu W et al. Hypoxia changes chemotaxis behaviour of mesenchymal stem cells via HIF-1a signalling. J Cell Mol Med 23:1899-1907 (2019). Read more (PubMed: 30628201) »