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Immunohistochemical analysis of paraffin-embedded human breast carcinoma, using Src Antibody #2108 in the presence of control peptide (left) or Src Blocking Peptide (right).

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Immunohistochemical analysis of paraffin-embedded human prostate carcinoma using Src (36D10) Rabbit mAb #2109 in the presence of control peptide (left) or Src Blocking Peptide #1235 (right).

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Product Description

This peptide is used to specifically block Src Antibody #2108 and Src (36D10) Rabbit mAb #2109 reactivity.


Quality Control

The quality of the peptide was evaluated by reversed-phase HPLC and by mass spectrometry. The peptide blocks Src Antibody #2108 and Src (36D10) Rabbit mAb #2109 signal in 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 Src Antibody #2108 and Src (36D10) Rabbit mAb #2109 data sheets.


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.

The Src family of protein tyrosine kinases, which includes Src, Lyn, Fyn, Yes, Lck, Blk, and Hck, are important in the regulation of growth and differentiation of eukaryotic cells (1). Src activity is regulated by tyrosine phosphorylation at two sites, but with opposing effects. While phosphorylation at Tyr416 in the activation loop of the kinase domain upregulates enzyme activity, phosphorylation at Tyr527 in the carboxy-terminal tail by Csk renders the enzyme less active (2).


1.  Thomas, S.M. and Brugge, J.S. (1997) Annu Rev Cell Dev Biol 13, 513-609.

2.  Hunter, T. (1987) Cell 49, 1-4.


Entrez-Gene Id 6714
Swiss-Prot Acc. P12931


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