Product Pathways - Jak/Stat Pathway
Phospho-Stat1 (Tyr701) (58D6) Rabbit mAb (Biotinylated) #5375
|W||H M||Endogenous||84, 91||Rabbit IgG|
Reactivity Key: H=Human M=Mouse
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.
Specificity / Sensitivity
Phospho-Stat1 (Tyr701) (58D6) Rabbit mAb (Biotinylated) recognizes endogenous levels of Stat1 only when phosphorylated at Tyr701. The antibody detects phosphorylated Tyr701 of p91 Stat1 and also the p84 splice variant. It does not cross-react with the corresponding phospho-tyrosines of other Stat proteins.
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Tyr701 of human Stat1 protein.
This Cell Signaling Technology antibody is conjugated to biotin under optimal conditions. The biotinylated antibody is expected to exhibit the same species cross-reactivity as the unconjugated Phospho-Stat1 (Tyr701) (58D6) Rabbit mAb #9167.
The Stat1 transcription factor is activated in response to a large number of ligands (1) and is essential for responsiveness to IFN-α and IFN-γ (2,3). Phosphorylation of Stat1 at Tyr701 induces Stat1 dimerization, nuclear translocation, and DNA binding (4). Stat1 protein exists as a pair of isoforms, Stat1α (91 kDa) and the splice variant Stat1β (84 kDa). In most cells, both isoforms are activated by IFN-α, but only Stat1α is activated by IFN-γ. The inappropriate activation of Stat1 occurs in many tumors (5). In addition to tyrosine phosphorylation, Stat1 is also phosphorylated at Ser727 through a p38 mitogen-activated protein kinase (MAPK)-dependent pathway in response to IFN-α and other cellular stresses (6). Serine phosphorylation may be required for the maximal induction of Stat1-mediated gene activation.
- Heim, M.H. (1999) J. Recept. Signal. Transduct. Res. 19, 75-120.
- Durbin, J.E. et al. (1996) Cell 84, 443-450.
- Meraz, M.A. et al. (1996) Cell 84, 431-442.
- Ihle, J.N. et al. (1994) Trends Biochem. Sci. 19, 222-227.
- Frank, D.A. (1999) Mol. Med. 5, 432-456.
- Wen, Z. et al. (1995) Cell 82, 241-250.
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- 3999 Streptavidin-HRP
- 9167 Phospho-Stat1 (Tyr701) (58D6) Rabbit mAb
- 9171 Phospho-Stat1 (Tyr701) Antibody
- 9175 Stat1 (42H3) Rabbit mAb
- 9176 Stat1 (9H2) Mouse mAb
Rabbit monoclonal antibody is produced under license (granting certain rights including those under U. S. Patents No. 5,675,063 and 7,429,487) from Epitomics, Inc.
For Research Use Only. Not For Use In Diagnostic Procedures.