Cell Signaling Technology

Product Pathways - Jak/Stat Pathway

Phospho-Jak2 (Tyr1007) (D15E2) Rabbit mAb #4406

Applications Reactivity Sensitivity MW (kDa) Isotype
W H M (R) (Mk) (B) Endogenous 125 Rabbit IgG

Applications Key:  W=Western Blotting
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

Specificity / Sensitivity

Phospho-Jak2 (Tyr1007) (D15E2) Rabbit mAb detects endogenous levels of Jak2 when phosphorylated at Tyr1007. This antibody can also detect double phosphorylation at Tyr1007 and Tyr1008. Cross-reactivity may be observed with phosphorylated Jak3 and Tyk2.

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Tyr1007 of human Jak2.

Western Blotting

Western Blotting

Western blot analysis of extracts from UT-7 cells, untreated or treated with erythropoietin (EPO; 3 units/ml; 5 min) and from untreated HEL cells, using Phospho-Jak2 (Tyr1007) (D15E2) Rabbit mAb (upper) or total Jak2 (D2E12) Rabbit mAb #3230 (lower). HEL cells contain a V617F activating mutation in Jak2.

Background

Members of the Janus family of tyrosine kinases (Jak1, Jak2, Jak3, and Tyk2) are activated by ligands binding to a number of associated cytokine receptors (1). Upon cytokine receptor activation, Jak proteins become autophosphorylated and phosphorylate their associated receptors to provide multiple binding sites for signaling proteins. These associated signaling proteins, such as Stats (2), Shc (3), insulin receptor substrates (4), and focal adhesion kinase (FAK) (5), typically contain SH2 or other phospho-tyrosine-binding domains.

  1. Leonard, W.J. and O'Shea, J.J. (1998) Annu Rev Immunol 16, 293-322.
  2. Darnell, J.E. (1997) Science 277, 1630-5.
  3. VanderKuur, J. et al. (1995) J Biol Chem 270, 7587-93.
  4. Argetsinger, L.S. et al. (1995) J Biol Chem 270, 14685-92.
  5. Zhu, T. et al. (1998) J Biol Chem 273, 10682-9.

Application References

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

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