Product Name: PRP4K-pY849
Product Number: AB-PK786
Size: 25 µg      Price:89.00
      $US
Target Full Name: Protein-serine kinase PRP4 homologue

Target Alias: CBP143; KIAA0536; Kinase PRP4; PR4H; Pre-mRNA protein kinase; PRPF4B; PRP4 homolog; PRP4 kinase; PRPK; PR4H; KIAA0536; dJ1013A10_1; PRP4H; PRP4K; ENSG00000112739

Product Type Specific: Protein kinase phosphosite-specific antibody

Antibody Code: PK786

Antibody Target Type: Phosphosite-specific

Antibody Phosphosite: Y849

Protein UniProt: Q13523

Protein SigNET: Q13523

Antibody Type: Polyclonal

Antibody Host Species: Rabbit

Antibody Immunogen Source: Human PRP4K (PRP4, PRPF4B) sequence peptide Cat. No.: PE-04ADK99

Antibody Immunogen Sequence: ITP(pY)LVS(bA)C

Antibody Immunogen Description: Corresponds to amino acid residues I846 to S852; In protein kinase catalytic domain activation T-loop between subdomains VII and VIII.

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: 1 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: 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 95-100, 140 kDa.
Antibody Specificity: Very low

Related Product 1: PRP4K-pY849 blocking peptide

Scientific Background: PRP4K (PRPF4B, PRP4) is a protein-serine/threonine kinase of the CMGC group and DYRK family. It is known to regulate pre-mRNA splicing. Identified substrates for PRP4K include splicing factors SF2, PRPF6, and PRPF31 as well as the KLF13 and Elk1 transcription factors. The enzymatic activity of PRP4K is required for viability of pancreatic, colon and large B-cell lymphoma cancer cell lines (PubMed: 24003220). Inhibition of PRP4K activity by shRNAs was shown to resensitize chemoresistant human ovarian and breast cancer to paclitaxel treatment.
Figure 1. Epitope mapping of PRP4K-pY849 antibody with similar phosphopeptides on dot blots.


Figure 2. Identification of phosphosites related to PRP4K-pY849.