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A synthetic phosphopeptide (Human) from the region of casein kinase 2 that contains serine 209.
Our Abpromise guarantee covers the use of ab12861 in the following tested applications.
Peptide Competition and Phosphatase Treatment
Lysates prepared from HeLa cells were resolved by SDS-PAGE on a 14% polyacrylamide gel and transferred to PVDF. Membranes were either left untreated (1-4) or treated with lambda (λ) phosphatase (5), blocked with a 3% Milk-TBST buffer for one hour at room temperature, and incubated with CK2β [pS209] (ab12861) antibody for two hours at room temperature in a 3% Milk- TBST buffer, following prior incubation with: no peptide (1, 5), the non-phosphopeptide corresponding to the immunogen (2), a generic phosphoserine-containing peptide (3), or, the phosphopeptide immunogen (4). After washing, membranes were incubated with goat F(ab’)2 anti-rabbit IgG HRP conjugate and bands were detected using the Pierce SuperSignal™ method.
The data show that only the peptide corresponding to CK2β [pS209] blocks the signal, verifying the specificity of the antibody.
ab12861 has not yet been referenced specifically in any publications.