Product Name: CLK1-pS337+pT338
Product Number: AB-PK584
Size: 25 µg      Price:89.00
      $US
Target Full Name: Dual specificity protein kinase CLK1

Target Alias: CDC like kinase 1; CDC-like kinase 1; CLK

Product Type Specific: Protein kinase phosphosite-specific antibody

Antibody Code: PK584

Antibody Target Type: Phosphosite-specific

Antibody Phosphosite: S337+T338

Protein UniProt: P49759

Protein SigNET: P49759

Antibody Type: Polyclonal

Antibody Host Species: Rabbit

Antibody Immunogen Source: Human CLK1 sequence peptide Cat. No.: PE-04AHQ99

Antibody Immunogen Sequence: EHH(pS)(pT)LVS(bA)C

Antibody Immunogen Description: Corresponds to amino acid residues E334 to S341; In the protein kinase catalytic domain activation T loop region 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 52-57 kDa.
Scientific Background: CLK1 is a protein-serine/threonine kinase of the CMGC group and CLK family. It is a dual-specificity kinase that phosphorylates serine- and arginine-rich (SR) proteins of the spliceosomal complex and may involve in regulatory mechanisms of RNA splicing. The phosphorylated serine/arginine-rich (SR) proteins involves in the pre-mRNA processing and releasing through nucleus into nucleoplasm. CLK1, which could phosphorylates the specific SR proteins such as ASF/SF2, may directly regulates the activity and compartmentalization of SR splicing factors. CLK1 interacts with PPIG. This kinase shows high variability in human tissue distribution with the highest levels detected in adrenals, brain, kidney, lung, ovary, pituitary, prostate, spinal cord, testes, thymus, thyroid, trachea, and uterus. Orthologues of CLK1 are amongst the most highly conserved protein kinases in animals, plants, fungi and unicellular eukaryotes.
Figure 1. Epitope mapping of CLK1-pS337+pT338 antibody with similar phosphopeptides on dot blots.


Figure 2. Identification of phosphosites related to CLK1-pS337+pT338.