Product Name: CK2a-pY255
Product Number: AB-PK582
Size: 25 µg      Price:89.00
      $US
Target Full Name: Casein protein-serine kinase 2 alpha/ alpha prime

Target Alias: Casein kinase 2, alpha 1 polypeptide; Casein kinase II, alpha chain; CK II; CK2-alpha1; CKIIA; CSK21; CSNK2A1; Kinase CK2-alpha1;

Product Type Specific: Protein kinase phosphosite-specific antibody

Antibody Code: PK582

Antibody Target Type: Phosphosite-specific

Antibody Phosphosite: Y255

Protein UniProt: P68400

Protein SigNET: P68400

Antibody Type: Polyclonal

Antibody Host Species: Rabbit

Antibody Immunogen Source: Human CK2a1 (CSNK2A1) sequence peptide Cat. No.: PE-04AJZ95

Antibody Immunogen Sequence: EDL(pY)DYI(bA)C

Antibody Immunogen Description: Corresponds to amino acid residues E252 to I258; In the last quarter of the kinase catalytic domain. This is the major in vivo phosphorylation site in CK2a.

Production Method: The immunizing peptide was produced by solid phase synthesis on a multipep peptide synthesizer and purified by reverse-phase hplc chromatography. Purity was assessed by analytical hplc and the amino acid sequence confirmed by mass spectrometry analysis. This peptide was coupled to KLH prior to immunization into rabbits. New Zealand White rabbits were subcutaneously injected with KLH-coupled immunizing peptide every 4 weeks for 4 months. The sera from these animals was applied onto an agarose column to which the immunogen peptide was thio-linked. Antibody was eluted from the column with 0.1 M glycine, pH 2.5. Subsequently, the antibody solution was neutralized to pH 7.0 with saturated Tris.This antibody was also subject to negative purification over phosphotyrosine-agarose.

Antibody Modification: Unconjugated. Contact KInexus if you are interest in having the antibody biotinylated or coupled with fluorescent dyes.

Antibody Concentration: 0.5 mg/ml

Storage Buffer: Phosphate buffered saline pH 7.4, 0.05% Thimerasol

Storage Conditions: For long term storage, keep frozen at -40°C or lower. Stock solution can be kept at +4°C for more than 3 months. Avoid repeated freeze-thaw cycles.

Product Use: Western blotting | Antibody microarray

Antibody Dilution Recommended: 2 µg/ml for immunoblotting

Antibody Potency: Medium-weak immunoreactivity of a target-sized protein by Western blotting in A431 cells. Very strong immunoreactivity with immunogen peptide on dot blots.

Antibody Species Reactivity: Human

Antibody Positive Control: The observed molecular mass of the processed target protein on SDS-PAGE gels is reported to be around 44-47 kDa.

Antibody Specificity: Very high

Antibody Cross Reactivity: No significant cross-reactive proteins detected in A431 cells and sea star oocytes.

Related Product 1: CK2a-pY255 blocking peptide

Related Product 2: CK2a1-ANT pan-specific antibody (Cat. No.: AB-NK041-2)

Related Product 3: CK2Selectide - CK2a1 (CSNK2A1) protein kinase substrate peptide

Related Product 4: HSP90a (255-268) KinSub - Heat shock protein alpha (K255-E268, human) peptide

Scientific Background: CK2a1 (CSNK2A1) is a protein-serine/threonine kinase of the Other group and CK2 family. CK2a1 is activated by the CK2-beta regulatory subunit and also by binding p38a MAPK. CK2 is potently inhibited by heparin. It is involved in various cellular processes, such as cell cycle control, apoptosis, transcription, and viral infection. It can phosphorylate human p53 protein a tS392 with presence of UV irradiation, which may be a potential mechanism for p53 activation by UV irradiation. It also phosphorylates the caspases CASP9 and CASP2, and hence negatively regulates apoptosis. CK2a1 levels are often up-regulated by 2-fold in expression in many human tumours.
Figure 1. Dot blotting CK2a-pY255 antibody with recombinant purified proteins.


Figure 2. Epitope mapping of CK2a-pY255 antibody with similar phosphopeptides on dot blots.


Figure 3. Identification of phosphosites related to CK2a-pY255.