STAT1 recombinant protein

STAT1 Protein, Human, Recombinant (His & GST Tag)

Cat. Num. AAA8121223

• Gene Names: STAT1; CANDF7; ISGF-3; STAT91
• Purity: >92% as determined by SDS-PAGE
• Synonyms: STAT1; STAT1 Protein; Human; Recombinant (His & GST Tag); Human STAT1/p91 Protein (His & GST Tag); CANDF7 Protein; IMD31A Protein; IMD31B Protein; IMD31C Protein; ISGF-3 Protein; STAT91 Protein; signal transducer and activator of transcription 1; 91kDa; STAT1 recombinant protein

• Host: Baculovirus-Insect Cells
• Purity/Purification: >92% as determined by SDS-PAGE
• Form/Format: Lyophilized from sterile 20mM Tris, 500mM NaCl, pH7.4. Normally 5%-8% trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.
• Sequence: Met1-Val712

• Species: Human
• Endotoxin: <1.0EU per ug of the protein as determined by the LAL method
• Predicted N Terminal: Met
• Tag: N-GST & His
• Protein Construction: A DNA sequence encoding the human STAT1 isoform beta (P42224-2)(Met 1-Val 712) was fused with the N-terminal polyhistidine-tagged GST tag at the N-terminus.
• Reconstitution: A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
• Preparation and Storage: Samples are stable for up to twelve months from date of receipt at -20 degree C to -80 degree C. Store it under sterile conditions at -20 degree C to -80 degree C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.; In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid.; They are shipped out with blue ice.

SDS-Page

Related Product Information for STAT1 recombinant protein

Background: STAT1 is a member of the STAT protein family. In response to cytokines and growth factors, STAT family members are phosphorylated by the receptor-associated kinases, and then form homo- or heterodimers that translocate to the cell nucleus where they act as transcription activators. STAT1 can be activated by various ligands, including interferon-alpha, interferon-gamma, EGF, PDGF and IL6. It is a signal transducer and transcription activator that mediates cellular responses to interferons (IFNs), cytokine KITLG/SCF and other cytokines and growth factors. The phosphorylated STATs dimerize, associate with ISGF3G/IRF-9 to form a complex termed ISGF3 transcription factor, that enters the nucleus. ISGF3 binds to the IFN stimulated response element (ISRE) to activate the transcription of interferon-stimulated genes, which drive the cell in an antiviral state. In response to type II IFN (IFN-gamma), STAT1 is tyrosine- and serine-phosphorylated. It then forms a homodimer termed IFN-gamma-activated factor (GAF), migrates into the nucleus and binds to the IFN gamma activated sequence (GAS) to drive the expression of the target genes, inducing a cellular antiviral state. STAT1 becomes activated in response to KITLG/SCF and KIT signaling and may mediate cellular responses to activated FGFR1, FGFR2, FGFR3 and FGFR4. Defects in STAT1 can cause STAT1 deficiency complete and familial candidiasis type 7.

Product Categories/Family for STAT1 recombinant protein

Apoptosis Transcription Factors and Regulators; EGFR Signaling Pathway

References

Shah S, et al. (2011) A novel disrupter of telomere silencing 1-like (DOT1L) interaction is required for signal transducer and activator of transcription 1 (STAT1)-activated gene expression. J Biol Chem. 286(48):41195-204.Barthson J, et al. (2011) Cytokines tumor necrosis factor- and interferon-gamma induce pancreatic beta-cell apoptosis through STAT1-mediated Bim protein activation. J Biol Chem. 286(45):39632-43.Xin Z, et al. (2011) PCBP2 enhances the antiviral activity of IFN- against HCV by stabilizing the mRNA of STAT1 and STAT2. PLoS One. 6(10):e25419.Perwitasari O, et al. (2011) Inhibitor of B kinase epsilon (IKK(epsilon)), STAT1, and IFIT2 proteins define novel innate immune effector pathway against West Nile virus infection. J Biol Chem. 286(52):44412-23.

NCBI and Uniprot Product Information

• NCBI GI #: 6274552
• NCBI GeneID: 6772
• NCBI Accession #: NP_009330.1
• NCBI GenBank Nucleotide #: NM_007315.3
• UniProt Accession #: P42224; Q53S88; Q53XW4; Q68D00; Q9UDL5; A8K989; B2RCA0; D2KFR8; D3DPI7
• Molecular Weight: 87,335 Da
• NCBI Official Full Name: signal transducer and activator of transcription 1-alpha/beta isoform alpha
• NCBI Official Synonym Full Names: signal transducer and activator of transcription 1, 91kDa
• NCBI Official Symbol: STAT1
• NCBI Official Synonym Symbols: CANDF7; ISGF-3; STAT91
• NCBI Protein Information: signal transducer and activator of transcription 1-alpha/beta; transcription factor ISGF-3 components p91/p84; signal transducer and activator of transcription-1
• UniProt Protein Name: Signal transducer and activator of transcription 1-alpha/beta
• Protein Family: Signal transducer and activator of transcription
• UniProt Gene Name: STAT1
• UniProt Entry Name: STAT1_HUMAN

NCBI Description

The protein encoded by this gene is a member of the STAT protein family. In response to cytokines and growth factors, STAT family members are phosphorylated by the receptor associated kinases, and then form homo- or heterodimers that translocate to the cell nucleus where they act as transcription activators. This protein can be activated by various ligands including interferon-alpha, interferon-gamma, EGF, PDGF and IL6. This protein mediates the expression of a variety of genes, which is thought to be important for cell viability in response to different cell stimuli and pathogens. Two alternatively spliced transcript variants encoding distinct isoforms have been described. [provided by RefSeq, Jul 2008]

Uniprot Description

STAT1: transcription factor of the STAT family. Phosphorylated and activated by receptor-associated kinases downstream of certain receptor tyrosine kinases, GPCRs, and receptors for various interleukins and interferons. Forms homo- or heterodimers that translocate into the nucleus where they regulate transcription. Two alternatively spliced isoforms have been described.

Protein type: DNA-binding; Transcription factor

Chromosomal Location of Human Ortholog: 2q32.2

Cellular Component: nucleoplasm; axon; nuclear chromatin; cytoplasm; dendrite; nucleolus; cytosol; nucleus

Molecular Function: identical protein binding; signal transducer activity; protein binding; protein homodimerization activity; enzyme binding; double-stranded DNA binding; transcription factor activity; tumor necrosis factor receptor binding; CCR5 chemokine receptor binding

Biological Process: transcription from RNA polymerase II promoter; response to peptide hormone stimulus; response to cAMP; viral reproduction; blood circulation; apoptosis; positive regulation of transcription, DNA-dependent; positive regulation of smooth muscle cell proliferation; negative regulation of transcription from RNA polymerase II promoter; regulation of apoptosis; response to exogenous dsRNA; tumor necrosis factor-mediated signaling pathway; positive regulation of mesenchymal cell proliferation; negative regulation of viral protein levels in host cell; lipopolysaccharide-mediated signaling pathway; defense response to virus; response to nutrient; response to drug; cytokine and chemokine mediated signaling pathway; negative regulation of I-kappaB kinase/NF-kappaB cascade; JAK-STAT cascade; regulation of transcription from RNA polymerase II promoter; negative regulation of angiogenesis; response to hydrogen peroxide; cellular response to insulin stimulus; response to mechanical stimulus; response to cytokine stimulus; negative regulation of endothelial cell proliferation; endothelial cell migration; positive regulation of transcription from RNA polymerase II promoter

Disease: Immunodeficiency 31a; Immunodeficiency 31b; Immunodeficiency 31c