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Immunohistochemical analysis of paraffin-embedded human lung carcinoma using Jak2 (D2E12) Rabbit mAb #3230 in the presence of control peptide (left) or Jak2 Blocking Peptide (right).

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Product Description

This peptide is used to specifically block Jak2 (D2E12) Rabbit mAb #3230 reactivity.


Quality Control

The quality of the peptide was evaluated by reversed-phase HPLC and by mass spectrometry. The peptide blocks Jak2 (D2E12) Rabbit mAb #3230 by immunohistochemistry.

Product Usage Information

Use as a blocking reagent to evaluate the specificity of antibody reactivity in immunohistochemistry protocols. For immunohistochemistry, add twice the volume of peptide as volume of antibody used in 100 µl total volume. Incubate for a minimum of 30 minutes prior to adding the entire volume to the slide. Recommended antibody dilutions can be found on the relevant product data sheet.

For Western immunoblotting, add 10 µl of antibody and 10 µl of blocking peptide to 10 ml of antibody dilution buffer, and incubate at room

temperature for 30 minutes before allowing to react with the blot.


Storage: Supplied in 20 mM potassium phosphate (pH 7.0), 50 mM NaCl, 0.1 mM EDTA, 1 mg/ml BSA and 5% glycerol. Store at –20°C.

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.  Darnell, J.E. (1997) Science 277, 1630-5.

2.  Leonard, W.J. (1998) Annu. Rev. Immunol. 16, 293-322.

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.


Entrez-Gene Id 3717
Swiss-Prot Acc. O60674


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