Stat5 activation occurs in response to many ligands including prolactin, IL-2, growth hormone, and GM-CSF. Tyr694 phosphorylation is obligatory activation of Stat5 (1,2), and is mediated by Src upon erythropoietin stimulation (3). Phospho Stat5 is constitutively active in some leukemic cell types (4), and phospho Stat5 is found in some endothelial cells when treated with IL-3, suggesting its involvement in cell motility and angiogenesis (5). Stat5 has been shown to be encoded by two separate genes, Stat5a and Stat5b, which share over 90% amino acid sequence identity. In different cell types, Stat5a and Stat5b are independently regulated and activated. For example, interferon treatment predominantly activates Stat5a in U937 cells and Stat5b in HeLa cells (6).
Predicted to work with mouse, rat and other homologues.
Detection
Anti-Rabbit IgG
Clonality
Monoclonal
Immunogen
A synthetic phospho-peptide corresponding to residues surrounding Tyr694 of human phospho Stat5
Formulation
1X PBS, 0.02% NaN3, 50% Glycerol, 0.1% BSA
Isotype
Rabbit IgGk
Preparation
Protein A+G
Recommended Usage
1.00 - 0.001 µg/mL.
It is recommended that the reagent be titrated for optimal performance for each application.
See product image legends for additional information.
Storage
-20ºC
Pseudonyms
Signal transducer and activator of transcription 5A, STAT5A, Signal transducer and activator of transcription 5B, STAT5B
1. Gouilleux, F. et al. (1994) EMBO J. 13:4361-4369.
2. Wakao, H. et al. (1994) EMBO J. 13:2182-2191.
3. Okutani, Y. et al. (2001) Oncogene. 20:6643-6650.
4. Demoulin, J.B. et al. (1999) J. Biol. Chem. 274:25855-25861.
5. Dentelli, P. et al. (1999) J. Immunol. 163:2151-2159.
6. Meinke, A. et al. (1996) Mol. Cell. Biol. 16:6937-6944.
