STAT1 blocking peptide

STAT1 Blocking Peptide (C-term)

• Gene Names: STAT1; CANDF7; IMD31A; IMD31B; IMD31C; ISGF-3; STAT91
• Synonyms: STAT1; STAT1 Blocking Peptide (C-term); Signal transducer and activator of transcription 1-alpha/beta; Transcription factor ISGF-3 components p91/p84; STAT1 blocking peptide

• Specificity: The synthetic peptide sequence is selected from aa 732-745 of HUMAN STAT1
• Form/Format: Synthetic peptide was lyophilized with 100% acetonitrile and is supplied as a powder. Reconstitute with 0.1 ml DI water for a final concentration of 1 mg/ml.
• Sequence Length: 750

• Cellular Location: Cytoplasm. Nucleus. Note: Translocated into the nucleus upon tyrosine phosphorylation and dimerization, in response to IFN-gamma and signaling by activated FGFR1, FGFR2, FGFR3 or FGFR4
• Preparation and Storage: Maintain refrigerated at 2-8 degree C for up to 6 months. For long term storage store at -20 degree C.

Related Product Information for STAT1 blocking peptide

Signal transducer and transcription activator that mediates cellular responses to interferons (IFNs), cytokine KITLG/SCF and other cytokines and other growth factors. Following type I IFN (IFN-alpha and IFN-beta) binding to cell surface receptors, signaling via protein kinases leads to activation of Jak kinases (TYK2 and JAK1) and to tyrosine phosphorylation of STAT1 and STAT2. The phosphorylated STATs dimerize and 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 IFN- stimulated genes (ISG), 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. Becomes activated in response to KITLG/SCF and KIT signaling. May mediate cellular responses to activated FGFR1, FGFR2, FGFR3 and FGFR4.

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: 83,043 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
• NCBI Official Symbol: STAT1
• NCBI Official Synonym Symbols: CANDF7; IMD31A; IMD31B; IMD31C; ISGF-3; STAT91
• NCBI Protein Information: signal transducer and activator of transcription 1-alpha/beta
• 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: axon; cytoplasm; cytosol; dendrite; nuclear chromatin; nucleolus; nucleoplasm; nucleus; perinuclear region of cytoplasm

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

Biological Process: apoptosis; blood circulation; endothelial cell migration; JAK-STAT cascade; negative regulation of angiogenesis; negative regulation of endothelial cell proliferation; negative regulation of I-kappaB kinase/NF-kappaB cascade; negative regulation of transcription from RNA polymerase II promoter; negative regulation of viral protein levels in host cell; positive regulation of mesenchymal cell proliferation; positive regulation of smooth muscle cell proliferation; positive regulation of transcription from RNA polymerase II promoter; positive regulation of transcription, DNA-dependent; regulation of apoptosis; response to cAMP; response to cytokine stimulus; response to peptide hormone stimulus; tumor necrosis factor-mediated signaling pathway

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