Signal transducer and activator of transcription 1-alpha/beta (Protein name
), STAT1_HUMAN from NCBI database.
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General Annotation
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Gene name:
STAT1;
Protein name:
Signal transducer and activator of transcription 1-alpha/beta;
Alternative:
Transcription factor ISGF-3 components p91/p84;
Organism:
Human (Homo sapiens).
General Annotation
Sub Unit:
Isoform alpha homodimerizes upon IFN-gamma induced phosphorylation. Heterodimer with STAT2 upon IFN-alpha/beta induced phosphorylation. Interacts with NMI. Interacts with Sendai virus C', C, Y1 and Y2 proteins, Nipah virus P, V and W proteins, and rabies virus phosphoprotein preventing activation of ISRE and GAS promoter (By similarity). Interacts with HCV core protein; the interaction results in STAT1 degradation. Interacts with PIAS1; the interaction requires phosphorylation on Ser-727 and inhibits STAT1 activation. Interacts with IFNAR1; the interaction requires the phosphorylation of IFNAR1 at 'Tyr-466'. Interacts with IFNAR2. Interacts with PIAS1 (dimethylated on arginine); the interaction results in release of STAT1 from its target gene.
Function:
Signal transducer and transcription activator that mediates cellular responses to interferons (IFNs), cytokine KITLG/SCF and other cytokines and 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, 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. Becomes activated in response to KITLG/SCF and KIT signaling. May mediate cellular responses to activated FGFR1, FGFR2, FGFR3 and FGFR4.
Subcellular Location:
Cytoplasm
Nucleus
Translocated into the nucleus upon tyrosine phosphorylation and dimerization, in response to IFN-gamma and signaling by activated FGFR1, FGFR2, FGFR3 or FGFR4.
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Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM ALPHA);PROTEIN SEQUENCE OF 514-524; 654-660 AND 667-672
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Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM ALPHA)
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Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM ALPHA)
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Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM BETA)
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Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM BETA)
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Cited for: TYROSINE PHOSPHORYLATION;HETERODIMERIZATION;DNA-BINDING;MUTAGENESIS
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Cited for: INTERACTION WITH IFNAR1 AND IFNAR2;PHOSPHORYLATION
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Cited for: SUMOYLATION AT LYS-703;FUNCTION;MUTAGENESIS OF LYS-703
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Cited for: SUMOYLATION AT LYS-703;FUNCTION;MUTAGENESIS OF LYS-110 AND LYS-703
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Cited for: PHOSPHORYLATION AT SER-727;FUNCTION;SUBCELLULAR LOCATION;MUTAGENESIS OF SER-727
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Cited for: INTERACTION WITH HEPATITIS C VIRUS CORE PROTEIN
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Cited for: PHOSPHORYLATION IN RESPONSE TO ACTIVATED FGFR3;PHOSPHORYLATION AT TYR-701
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Cited for: PHOSPHORYLATION IN RESPONSE TO ACTIVATED FGFR1; FGFR2; FGFR3 AND FGFR4
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Cited for: PHOSPHORYLATION AT SER-727;INTERACTION WITH PIAS1;SUMOYLATION;MUTAGENESIS OF TYR-701 AND SER-727
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Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-727;IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]
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Cited for: FUNCTION;PHOSPHORYLATION AT TYR-701 IN RESPONSE TO CONSTITUTIVELY ACTIVATED FGFR3
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Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-727;IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]
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Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-727;IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]
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Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-727;IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]
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Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]
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Cited for: PHOSPHORYLATION AT TYR-701 IN RESPONSE TO KIT SIGNALING;PHOSPHORYLATION AT SER-727
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Cited for: PHOSPHORYLATION AT TYR-701; SER-708 AND SER-727;MUTAGENESIS OF TYR-701; SER-708 AND SER-727
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Cited for: ACETYLATION [LARGE SCALE ANALYSIS] AT SER-2;IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS];CLEAVAGE OF INITIATOR METHIONINE [LARGE SCALE ANALYSIS]
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Cited for: X-RAY CRYSTALLOGRAPHY (2.9 ANGSTROMS) OF 136-710;COILED-COIL
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Cited for: VARIANTS IMD31A GLN-320 AND HIS-463;CHARACTERIZATION OF VARIANTS GLN-320; HIS-463 AND SER-706
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Cited for: VARIANT IMD31B ASN-201;CHARACTERIZATION OF VARIANT IMD31B ASN-201
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Cited for: VARIANTS CANDF7 GLY-165; HIS-165; ASN-170; ARG-174; ILE-202; VAL-202; VAL-267; PRO-271; GLN-274; TRP-274; ILE-286 AND ALA-288;CHARACTERIZATION OF VARIANTS CANDF7 GLY-165 AND GLN-274
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Cited for: VARIANTS IMD31A GLU-637 AND ARG-673;CHARACTERIZATION OF VARIANTS IMD31A GLU-637 AND ARG-673