Many hormones and cytokines selectively activate transcription factors of the STAT gene family.
STAT5 was originally cloned as a prolactin-stimulated DNA-binding protein, but is also activated by non-lactogenic cytokines in many cell types.
Phosphorylation of a conserved tyrosine residue is required for STAT dimerization, nuclear translocation, and specific DNA binding.
Serine residues located in a conserved PSP motif of STAT5A (S726) and STAT5B (S731) are also major phosphorylation sites.
Interestingly, control of the phosphorylation of the PSP motif differs between the STAT5A (S725) and STAT5B (S730) serine sites.
Applications:Suitable for use in Immunoprecipitation/Western Blot.
Other applications have not been tested.
Recommended Dilutions:Immunoprecipitation/Western Blot Analysis: 1:500-1:2000 detected phosphorylated STAT5A following immunoprecipitation of STAT5A from RIPA lysates of Nb2-Sp cells that had been treated with prolactin; 4ul of S7972-10 was used to immunoprecipitate total STAT5A.
Proteins were visualized using an IgG (HRP) goat anti-rabbit secondary antibody and a chemiluminescence detection system.
Phosphospecificity was confirmed by dephosphorylation of the STAT5a protein with l-phosphatase
Optimal dilutions to be determined by the researcher.
Storage and Stability:May be stored at 4°C for short-term only.
Aliquot to avoid repeated freezing and thawing.
Store at -20°C.
Aliquots are stable for 12 months after receipt.
For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
仕様
Size:200ul
Host:rabbit
Source Antibody:human
Grade:Serum
Purity:Serum
Form:Supplied as a liquid in 0.05% sodium azide, 30% glycerol.
Specificity:Recognizes human phosphorylated STAT5A (S726) and STAT5B (S731) at ~95kD. Does not recognize STAT5B containing a S731A mutation in lysates of transfected Cos-1 cells, stimulated with prolactin. Species Crossreactivity: mouse and rat
Isotype:IgG
Calc Applications Abbrev:IP WB
Calc Crossreactivity:Hu Mo Rt
Immunogen:Synthetic peptide corresponding to aa722-730, DQAP[pS]PAVC of human STAT5A or aa727-735 of human STAT5B, conjugated to KLH. Species Sequence Homology: bovine and sheep