Cell Signaling Technology

Product Pathways - Jak/Stat Pathway

Phospho-Stat5 (Tyr694) (C71E5) Rabbit mAb #9314

Applications Reactivity Sensitivity MW (kDa) Isotype
W IHC-P IF-IC F H M (R) (Mk) (B) Endogenous 90 Rabbit IgG

Applications Key:  W=Western Blotting  IHC-P=Immunohistochemistry (Paraffin)  IF-IC=Immunofluorescence (Immunocytochemistry)  F=Flow Cytometry
Reactivity Key:  H=Human  M=Mouse  R=Rat  Mk=Monkey  B=Bovine
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.

Protocols

* Product-specific protocol.

Specificity / Sensitivity

Phospho-Stat5 (Tyr694) (C71E5) Rabbit mAb detects endogenous levels of Stat5a only when phosphorylated at Tyr694 and Stat5b when phosphorylated at Tyr699.

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Tyr694 of Stat5.

Western Blotting

Western Blotting

Western blot analysis of extracts from K562, untreated or treated with Gleevec for 1 hour, using Phospho-Stat5 (Tyr694) (C71E5) Rabbit mAb (upper) or Stat5 Antibody #9310 (lower).

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded human breast carcinoma using Phospho-Stat5 (Tyr694) (C71E5) Rabbit mAb.

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis using Phospho-Stat5 (Tyr694) (C71E5) Rabbit mAb on SignalSlide® Phospho-Stat1/3/5 IHC Controls #8105 (paraffin-embedded HeLa cell pellets, untreated (left), treated with Human Interferon-α1 (hIFN-α1) #8927 (middle), or treated with Human Epidermal Growth Factor (hEGF) #8916 (right).


IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded K562 cell pellets control (left) or STI-571-treated (right) using Phospho-Stat5 (Tyr694) Rabbit mAb.

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded human lung carcinoma using Phospho-Stat5 (Tyr694) (C71E5) Rabbit mAb.

Flow Cytometry

Flow Cytometry

Flow cytometric analysis of K562 cells, Gleevec-treated (blue) or untreated (green), using Phospho-Stat5 (Tyr694) (C71E5) Rabbit mAb.


IF-IC

IF-IC

Confocal immunofluorescent analysis of HeLa cells, IFNα-treated (left) or untreated (right), using Phospho-Stat5 (Tyr694) (C71E5) Rabbit mAb (green) and Pan-Keratin (C11) Mouse mAb #4545 (red).

Background

Stat5 is activated in response to a wide variety of ligands including IL-2, GM-CSF, growth hormone and prolactin. Phosphorylation at Tyr694 is obligatory for Stat5 activation (1,2). This phosphorylation is mediated by Src upon erythropoietin stimulation (3). Stat5 is constitutively active in some leukemic cell types (4). Phosphorylated Stat5 is found in some endothelial cells treated with IL-3, which suggests its involvement in angiogenesis and cell motility (5). Stat5a and Stat5b are independently regulated and activated in various cell types. For instance, interferon treatment predominantly activates Stat5a in U-937 cells and Stat5b in HeLa cells (6).

  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.

Application References

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Companion Products

For Research Use Only. Not For Use In Diagnostic Procedures.

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