Description
Product Usage Information
Flow Cytometry (Fixed/Permeabilized): 1:50
Storage
Supplied in PBS (pH 7.2), less than 0.1% sodium azide and 2 mg/ml BSA. Store at 4°C. Do not aliquot the antibody. Protect from light. Do not freeze.
Protocol
Available protocols: Flow Cytometry (Fixed/Permeabilized)
Specificity / Sensitivity
Phospho-Stat2 (Tyr690) (D3P2P) Rabbit Monoclonal Antibody (PE Conjugate) recognizes endogenous levels of Stat2 protein only when phosphorylated at Tyr690.
Species Reactivity: Human, Rat
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic phospho-peptide corresponding to residues surrounding Tyr690 of human Stat2 protein.
Background
Stat2 (113 kDa), originally purified from the nuclei of alpha-interferon-treated cells, is critical to the transcriptional responses induced by type I interferons, IFN-alpha/beta (1,2). Knockout mice with a targeted disruption of Stat2 have higher susceptibility to viral infection and altered responses to type I interferons (3). Stat2 is rapidly activated by phosphorylation at Tyr690 in response to stimulation by IFN-alpha/beta via associations with receptor-bound Jak kinases (4). Unlike other Stat proteins, Stat2 does not form homodimers. Instead, activated Stat2 forms a heterodimer with Stat1 and translocates to the nucleus. There, it associates with the DNA-binding protein p48 and forms the transcriptional activator complex, interferon-stimulated gene factor 3 (ISGF3), promoting transcription from the ISRE (5).
Alternate Names
IMD44; interferon alpha induced transcriptional activator; ISGF-3; MGC59816; p113; PTORCH3; Signal transducer and activator of transcription 2; signal transducer and activator of transcription 2, 113kDa; STAT113; STAT2
