Product Name: Blk-pY389
Product Number: AB-PK543
Size: | 25 µg | | Price: | 89.00 |
| | | $US | |
Target Full Name: B lymphoid tyrosine kinase
Target Alias: P55-Blk
Product Type Specific: Protein kinase phosphosite-specific antibody
Antibody Code: PK543
Antibody Target Type: Phosphosite-specific
Antibody Phosphosite: Y389
Protein UniProt: P51451 Protein SigNET: P51451 Antibody Type: Polyclonal
Antibody Host Species: Rabbit
Antibody Immunogen Source: Human Blk sequence peptide Cat. No.: PE-04AIP90
Antibody Immunogen Sequence: DSE(pY)TAQ(bA)C
Antibody Immunogen Description: Corresponds to amino acid residues D386 to Q392; 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: 0.75 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 weak immunoreactivity of a target-sized protein by Western blotting in Jurkat cells. Medium immunoreactivity with immunogen peptide on dot blots.
Antibody Species Reactivity: Human
Scientific Background: Blk is a protein-tyrosine kinase that is a member of the TK group of protein kinases in the Src family. It has been reported that Blk is expressed specifically in the B cell lineage and plays a role in signal transduction pathway that is restricted to B lymphoid cells. However, this kinase has low to reasonably high expression (e.g. skeletal muscle, kidney, thyroid, breast) in most tested human tissues except in the brain and spinal cord where it is poorly expressed. Orthologues of Blk are highly conserved in mammals and birds. Blk is inhibited by phosphorylation at Y501. Blk has been linked with the development of colorectal adenocarcinomas. Stimulation of resting B-lymphocytes with antibodies to surface immunoglobulin (sIgD or sIgM) induces activation of Blk.
Figure 1. Identification of phosphosites related to BLK-pY389.