Rat HSF2 Monoclonal Antibody | anti-HSF2 antibody
HSF2 Antibody: PerCP
Western Blot (WB)
(Western Blot analysis of Human K562 cell lysates showing detection of HSF2 protein using Rat Anti-HSF2 Monoclonal Antibody, Clone 3E2. Primary Antibody: Rat Anti-HSF2 Monoclonal Antibody at 1:1000. Cells transiently transfected with control, HSF1 or HSF2 shRNA constructs. Courtesy of: Lea Sistonen, Abo Akademi University, Finland.)
Scientific Background: HSF2, or heat shock factor 2, belongs to a family of Heat Shock transcription factors that activate the transcription of genes encoding products required for protein folding, processing, targeting, degradation, and function (2). The up-regulation of HSP (heat shock proteins) expression by stressors is achieved at the level of transcription through a heat shock element (HSE) and a transcription factor (HSF) (3, 4, 5). Most HSFs have highly conserved amino acid sequences. On all HSFs there is a DNA binding domain at the N-terminus. Hydrophobic repeats located adjacent to this binding domain are essential for the formation of active trimers. Towards the C-terminal region another short hydrophobic repeat exists, and is thought to be necessary for suppression of trimerization (6). There are two main heat shock factors, 1 and 2. Mouse HSF1 exists as two isoforms, however in higher eukaryotes HSF1 is found in a diffuse cytoplasmic and nuclear distribution in un-stressed cells. Once exposed to a multitude of stressors, it localizes to discrete nuclear granules within seconds. As it recovers from stress, HSF1 dissipates from these granules to a diffuse nuceloplasmic distribution. HSF2 on the other hand is similar to mouse HSF1, as it exists as two isoforms, the alpha form being more transciptionally active than the smaller beta form (7, 8). Various experiments have suggested that HFS2 may have roles in differentiation and development (9, 10, 11).
NCBI and Uniprot Product Information
NCBI Description
The protein encoded by this gene belongs to the HSF family of transcription factors that bind specifically to the heat-shock promoter element and activate transcription. Heat shock transcription factors activate heat-shock response genes under conditions of heat or other stresses. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2011]
Uniprot Description
HSF2: 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. Belongs to the HSF family. 2 isoforms of the human protein are produced by alternative splicing.
Protein type: DNA-binding
Cellular Component: cytoplasm; nucleus
Molecular Function: protein homodimerization activity; DNA binding; sequence-specific DNA binding; transcription factor activity
Biological Process: transcription from RNA polymerase II promoter; regulation of transcription from RNA polymerase II promoter; regulation of transcription, DNA-dependent; transcription, DNA-dependent; positive regulation of transcription from RNA polymerase II promoter; spermatogenesis