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 . Following bacterial lipopolysaccharide (LPS)-induced TLR4 endocytosis, phosphorylated at Thr-749 by IKBKB which promotes binding of STAT1 to the 5''-TTTGAGGC-3'' sequence in the ARID5A promoter, resulting in transcriptional activation of ARID5A and subsequent ARID5A-mediated stabilization of IL6 . Phosphorylation at Thr-749 also promotes binding of STAT1 to the 5''-TTTGAGTC-3'' sequence in the IL12B promoter and activation of IL12B transcription . Involved in food tolerance in small intestine: associates with the Gasdermin-D, p13 cleavage product (13 kDa GSDMD) and promotes transcription of CIITA, inducing type 1 regulatory T (Tr1) cells in upper small intestine (By similarity). .

Signal transducer and activator of transcription 1-alpha/beta (Transcription factor ISGF-3 components p91/p84),STAT1

P42224,P42225

6772

Human,Mouse

WB,IHC,IF,ICC,IP,ELISA

WB 1:1000-5000
IHC 1:100-400
IF 1:100-1:400
ICC 1:100-1:400
IP 1:50-1:200
ELISA 1:5000-1:20000

STAT1 (Phospho Tyr701) Antibody detects endogenous levels of Stat1 protein only when phosphorylated at Y701.The name of modified sites may be influenced by many factors, such as species (the modified site was not originally found in human samples) and the change of protein sequence (the previous protein sequence is incomplete, and the protein sequence may be prolonged with the development of protein sequencing technology). When naming, we will use the "numbers" in historical reference to keep the sites consistent with the reports. The antibody binds to the following modification sequence (lowercase letters are modification sites):TGyIK

87kDa

Rabbit

Monoclonal

R260

IgG,Kappa

Protein A

PBS, 50% glycerol, 0.05% Proclin 300, 0.05%BSA

Store at -20℃. Stable for 12 months from date of receipt.