Register or Login
  • All
  • Uniprot Id
  • Catalog #
  • Peptide Sequence
>   home   >   Products   >   Primary Antibodies   >   Antibody Collections   >   Phospho Antibodies   >   HSF1 Antibody Phospho (pS303/307)   

HSF1 Antibody Phospho (pS303/307)

Rabbit Monoclonal Antibody

  • WB - HSF1 Antibody Phospho (pS303/307) AJ1374b
    A. Western blot analysis of (A) untreated and (B) AP treated HeLa cell lysates using anti-phospho-HSF1 (pS303/307) RabMAb (Cat. #AJ1374b) 1:50,000 dilution. Pan Control: Western blot analysis of (C) untreated and (b) AP treated HeLa cell lysates using anti-HSF1 RabMab (cat# 2143-1), 10,000 dilution.
  • IHC - HSF1 Antibody Phospho (pS303/307) AJ1374b
    B. Immunohistochemical analysis of paraffin-embedded human breast carcinoma using anti-HSF-1 RabMAb (Cat. #AJ1374b)
Product Information
  • Applications Legend:
  • WB=Western Blot
  • IHC=Immunohistochemistry
  • IHC-P=Immunohistochemistry (Paraffin-embedded Sections)
  • IHC-F=Immunohistochemistry (Frozen Sections)
  • IF=Immunofluorescence
  • FC=Flow Cytopmetry
  • IC=Immunochemistry
  • ICC=Immunocytochemistry
  • IP=Immunoprecipitation
  • DB=Dot Blot
  • CHIP=Chromatin Immunoprecipitation
  • FA=Fluorescence Assay
  • IEM=Immunoelectronmicroscopy
  • EIA=Enzyme Immunoassay
Primary Accession Q00613
Reactivity Human
Host Rabbit
Clonality Monoclonal
Clone Names EP1711Y
Calculated MW 57260 Da
Gene ID 3297
Other Names Heat shock factor protein 1, HSF 1, Heat shock transcription factor 1, HSTF 1, HSF1, HSTF1
Target/Specificity A synthetic peptide corresponding to residues near serine 303 and 307 of human HSF1 was used as an immunogen.
Dilution WB~~1:50000~200000
Format 50 mM Tris-Glycine (pH 7.4), 0.15 M NaCl, 40% Glycerol, 0.01% sodium azide and 0.05% BSA.
StorageMaintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.
PrecautionsHSF1 Antibody Phospho (pS303/307) is for research use only and not for use in diagnostic or therapeutic procedures.
Protein Information
Name HSF1
Synonyms HSTF1
Function DNA-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.
Cellular Location Cytoplasm. Nucleus. Note=Cytoplasmic during normal growth. On activation, translocates to nuclear stress granules. Colocalizes with SUMO1 in nuclear stress granules
Research Areas
Citations (0)

Thousands of laboratories across the world have published research that depended on the performance of antibodies from Abgent to advance their research. Check out links to articles that cite our products in major peer-reviewed journals, organized by research category.

Submit your citation using an Abgent antibody to, and receive a free "I Love Antibodies" mug.


Human cells respond to heat stress by inducing the binding of a pre-existing transcriptional activator (heat shock factor, HSF) to DNA (1). Induction of heat shock protein (HSP) gene expression by stress is initiated by binding of HSF1 to HSP gene promoters to increase their transcription. The cytoprotective functions of these HSPs are essential for cell survival, and thus it is critical that inducible HSP gene expression be executed rapidly and efficiently. There is an interaction between heat shock factor 1 (HSF1) and symplekin, a protein known to form a complex with the polyadenylation factors CstF and CPSF. HSF1-symplekin complexes are detected only after stress treatment, and these two proteins co-localize in punctate nuclear structures in stressed cells (2). A chaperone/Hsp functioning as repressor of heat shock transcription factor (HSF) could make activation of hsp genes dependent on protein unfolding. It has been concluded that Hsp90, by itself and/or associated with multichaperone complexes, is a major repressor of HSF1 (3). HSF1 repression has been linked with phosphorylation on serine 303 and 307 by GSK3 and MAPK respectively (4).


1. Rabindran Sk, et al. Proc Natl Acad 88(16):6906-10, 1991
2. Xing H, et al. J Biol Chem 279(11):10551-5, 2004
3. Zou J, et al. Cell 94(4):471-80, 1998
4. Chu B, et al. JBC 273:18640-18646, 1998

Abgent welcomes feedback from its customers.

If you have used an Abgent product and would like to share how it has performed, please click on the "Submit Review" button and provide the requested information. Our staff will examine and post your review and contact you if needed.

If you have any additional inquiries please email technical services at

Cat# AJ1374b
(40 western blots)
Alternative Products:

Ordering Information

United States
AlbaniaAustraliaAustriaBelgiumBosnia & HerzegovinaBrazilBulgariaCanadaChinaCroatiaCyprusCzech RepublicDenmarkEstoniaFinlandFranceGermanyGreeceHong KongHungaryIcelandIndiaIndonesiaIrelandIsraelItalyJapanKoreaLatviaLithuaniaLuxembourgMacedoniaMalaysiaMaltaNetherlandsNew ZealandNorwayPakistanPolandPortugalRomaniaSerbiaSingaporeSlovakiaSloveniaSouth AfricaSpainSwedenSwitzerlandTaiwanTurkeyUnited KingdomUnited StatesVietnamOthers
Abgent, Inc.
(888) 735-7227 / (858) 622-0099
(858) 622-0609
USA Headquarters
(888) 735-7227 / (858) 622-0099 or (858) 875-1900

Shipping Information

Domestic orders (in stock items)
Shipped out the same day. Orders placed after 1 PM (PST) will ship out the next business day.
International orders
Contact your local distributors
Santa Cruz Alternative
Terms & Conditions