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HSF1 Antibody

Rabbit Monoclonal Antibody

  • WB - HSF1 Antibody AJ1374a
    A. Western blot analysis on HeLa cell lysate using anti-HSF1 RabMAb (Cat. #AJ1374a).
  • IHC - HSF1 Antibody AJ1374a
    B. Immunohistochemical staining of paraffin-embedded human ovarian carcinoma using anti-HSF1 RabMAb (Cat. #AJ1374a).
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 EP1710Y
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 the C-terminus of human HSF1 was used as an immunogen.
Dilution WB~~1:10000~50000
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 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 )


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).


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

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Cat# AJ1374a
(40 western blots)
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