Description
| Product Name: | Human HSF1 Recombinant Protein |
| Product Code: | RPPB5229 |
| Size: | 25µg |
| Species: | Human |
| Target: | HSF1 |
| Synonyms: | HSF-1, HSF1, HSTF-1, HSTF1, Heat shock factor protein 1, Heat shock transcription factor 1. |
| Source: | Escherichia Coli |
| Physical Appearance: | Sterile filtered colorless solution. |
| Formulation: | The HSF1 protein (1mg/ml) contains 20mM Tris pH-8, 50mM NaCl and 1mM DTT. |
| Stability: | Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles. |
| Purity: | Greater than 75.0% as determined by SDS-PAGE. |
| Amino Acid Sequence: | MGSSHHHHHH SSGLVPRGSH MDLPVGPGAA GPSNVPAFLT KLWTLVSDPD TDALICWSPS GNSFHVFDQG QFAKEVLPKY FKHNNMASFV RQLNMYGFRK VVHIEQGGLV KPERDDTEFQ HPCFLRGQEQ LLENIKRKVT SVSTLKSEDI KIRQDSVTKL LTDVQLMKGK QECMDSKLLA MKHENEALWR EVASLRQKHA QQQKVVNKLI QFLISLVQSN RILGVKRKIP LMLNDSGSAH SMPKYSRQFS LEHVHGSGPY SAPSPAYSSS SLYAPDAVAS SGPIISDITE LAPASPMASP GGSIDERPLS SSPLVRVKEE PPSPPQSPRV EEASPGRPSS VDTLLSPTAL IDSILRESEP APASVTALTD ARGHTDTEGR PPSPPPTSTP EKCLSVACLD KNELSDHLDA MDSNLDNLQT MLSSHGFSVD TSALLDLFSP SVTVPDMSLP DLDSSLASIQ ELLSPQEPPR PPEAENSSPD SGKQLVHYTA QPLFLLDPGS VDTGSNDLPV LFELGEGSYF SEGDGFAEDP TISLLTGSEP PKAKDPTVS |
The transcription of heat-shock genes is rapidly induced after temperature stress in response to environmental changes, and it is also involved in oogenesis, spermatogenesis, and placental development. Hsp90, is a major repressor of HSF1 gene. HSF1 is known for its participation in heat shock response. HSF1 protein regulates the transcription of hundreds of targets, such as genes involved in protein folding, detoxification, energy generation, carbohydrate metabolism, and cell wall organization.HSF1 binds to MTA1 in vitro & in breast carcinoma. Suppression of estrogen-dependent transcription may contribute to role of HSF1 in cancer. Human cancer lines of diverse origins express higher dependence on HSF1 function to maintain proliferation and survival than their non-transformed counterparts.HSF1 induces anticoagulation and relaxation factors in vascular endothelial cells and could therefore be used to treat cardiovascular disease. HSF1 is directly involved in the regulation of HO1 having an anti-oxidative role.NF-kappaB and HSF1 are systemically activated in human acute pancreatitis. HSF1 activation protects against severity of pancreatitis.HSF is a vital transcription factor which plays a role in up-regulation of VDUP1 expression through stresses such as elevated density and serum deprivation cultures.
Recombinant Human HSF1 produced in E.Coli is a single, non-glycosylated polypeptide chain containing a total of 549 amino acids (1-529) and having a molecular mass of 59.4kDa.The HSF1 protein is fused to a 20 aa His-Tag at N-terminus.
| UniProt Protein Function: | HSF1: a transcription factor that specifically binds heat shock promoter elements (HSE) and activates transcription. Induced in response to heat, heavy metals, and oxidative stress. In higher eukaryotes, HSF is unable to bind to HSEs unless the cells are stressed. Becomes phosphorylated in response to stress, forming homotrimers that bind DNA and activate transcription. Phosphorylation by PLK1 enhances nuclear translocation, and phosphorylation by CaMKII enhances transactivation. Phosphorylation by GSK3 and ERK1 induces binding by 14-3-3 and sequestration in the cytoplasm. In addition, during attenuation from the heat shock response, HSF1 is repressed by direct binding of Hsp70, HSP40, and HSF binding protein 1 (HSBP1). Four alternatively spliced isoforms have been described. |
| UniProt Protein Details: | Protein type:Transcription factor; DNA-binding Chromosomal Location of Human Ortholog: 8q24.3 Cellular Component: nucleoplasm; protein complex; pronucleus; cytoplasm; cytosol Molecular Function:protein binding; chromatin binding; transcription factor activity Biological Process: negative regulation of cell proliferation; embryonic placenta development; embryonic process involved in female pregnancy; mRNA transcription; female meiosis; positive regulation of transcription from RNA polymerase II promoter; response to lipopolysaccharide; defense response; spermatogenesis; negative regulation of tumor necrosis factor production; negative regulation of transcription from RNA polymerase II promoter; positive regulation of multicellular organism growth; protein amino acid phosphorylation |
| NCBI Summary: | The product of this gene is a heat-shock transcription factor. Transcription of heat-shock genes is rapidly induced after temperature stress. Hsp90, by itself and/or associated with multichaperone complexes, is a major repressor of this gene. [provided by RefSeq, Jul 2008] |
| UniProt Code: | Q00613 |
| NCBI GenInfo Identifier: | 462333 |
| NCBI Gene ID: | 3297 |
| NCBI Accession: | Q00613.1 |
| UniProt Secondary Accession: | Q00613,Q53XT4, A8K4L0, A8MW26, |
| UniProt Related Accession: | Q00613 |
| Molecular Weight: | 529 |
| NCBI Full Name: | Heat shock factor protein 1 |
| NCBI Synonym Full Names: | heat shock transcription factor 1 |
| NCBI Official Symbol: | HSF1�� |
| NCBI Official Synonym Symbols: | HSTF1�� |
| NCBI Protein Information: | heat shock factor protein 1; HSF 1; HSTF 1 |
| UniProt Protein Name: | Heat shock factor protein 1 |
| UniProt Synonym Protein Names: | Heat shock transcription factor 1; HSTF 1 |
| Protein Family: | Heat shock factor protein |
| UniProt Gene Name: | HSF1�� |
| UniProt Entry Name: | HSF1_HUMAN |
