Product nameAnti-HSF1 (phospho S320) antibody [EPR1712]
See all HSF1 primary antibodies
DescriptionRabbit monoclonal [EPR1712] to HSF1 (phospho S320)
Tested applicationsSuitable for: WB, IHC-P, ICCmore details
Unsuitable for: Flow Cyt or IP
Species reactivityReacts with: Human
A synthetic phospho-peptide from residues surrounding serine 320 of human HSF1.
- HeLa whole cell lysate (ab150035), human muscle tissue.
Mouse, Rat: We have preliminary internal testing data to indicate this antibody may not react with these species. Please contact us for more information.
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMab® patents.
This product is a recombinant rabbit monoclonal antibody.
Storage instructionsShipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid freeze / thaw cycles.
Storage bufferpH: 7.20
Preservative: 0.05% Sodium azide
Constituents: 0.1% BSA, 40% Glycerol, 9.85% Tris glycine, 50% Tissue culture supernatant
PurityTissue culture supernatant
Our Abpromise guarantee covers the use of ab76183 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|WB||1/10000 - 1/20000. Predicted molecular weight: 57 kDa.|
|IHC-P||1/100 - 1/250. Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.|
|ICC||1/100 - 1/250.|
FunctionDNA-binding protein that specifically binds heat shock promoter elements (HSE) and activates transcription. In higher eukaryotes, HSF is unable to bind to the HSE unless the cells are heat shocked.
Sequence similaritiesBelongs to the HSF family.
Domainthe 9aaTAD motif is a transactivation domain present in a large number of yeast and animal transcription factors.
modificationsPhosphorylated on multiple serine residues, a subset of which are involved in stress-related regulation of transcription activation. Constitutive phosphorylation represses transcriptional activity at normal temperatures. Levels increase on specific residues heat-shock and enhance HSF1 transactivation activity. Phosphorylation on Ser-307 derepresses activation on heat-stress and in combination with Ser-303 phosphorylation appears to be involved in recovery after heat-stress. Phosphorylated on Ser-230 by CAMK2, in vitro. Cadmium also enhances phosphorylation at this site. Phosphorylation on Ser-303 is a prerequisite for HSF1 sumoylation. Phosphorylation on Ser-121 inhibits transactivation and promotes HSP90 binding. Phosphorylation on Thr-142 also mediates transcriptional activity induced by heat. Phosphorylation on Ser-326 plays an important role in heat activation of HSF1 transcriptional activity.
Sumoylated with SUMO1 and SUMO2 on heat-shock. Heat-inducible sumoylation occurs after 15 min of heat-shock, after which levels decrease and at 4 hours, levels return to control levels. Sumoylation has no effect on HSE binding nor on transcriptional activity. Phosphorylation on Ser-303 is a prerequisite for sumoylation.
Cellular localizationCytoplasm. Nucleus. Cytoplasmic during normal growth. On activation, translocates to nuclear stress granules. Colocalizes with SUMO1 in nuclear stress granules.
- Information by UniProt
- Heat shock factor 1 antibody
- Heat shock factor protein 1 antibody
- Heat shock transcription factor 1 antibody
Immunohistochemical analysis of paraffin-embedded human muscles using ab76183 at 1/100 dilution.
Perform heat mediated antigen retrieval with EDTA buffer pH 9 before commencing with IHC staining protocol.
All lanes : Anti-HSF1 (phospho S320) antibody [EPR1712] (ab76183) at 1/20000 dilution
Lane 1 : HeLa cell lysate
Lane 2 : HeLa cell lysate, heat treated at 42°C
Lysates/proteins at 10 µg per lane.
All lanes : Goat anti-rabbit-HRP at 1/1000 dilution
Developed using the ECL technique.
Predicted band size: 57 kDa
Observed band size: 90 kDa why is the actual band size different from the predicted?
This product has been referenced in:
- Pan X et al. Heat shock factor 1 suppresses the HIV-induced inflammatory response by inhibiting nuclear factor-?B. Cell Immunol 327:26-35 (2018). Read more (PubMed: 29525181) »
- Yih LH et al. Inhibition of the heat shock response by PI103 enhances the cytotoxicity of arsenic trioxide. Toxicol Sci 128:126-36 (2012). Read more (PubMed: 22496356) »