Product Name: LOK-pS191
Product Number: AB-PK685
Size: 25 µg      Price:89.00
      $US
Target Full Name: Lymphocyte-oriented protein-serine kinase; Serine-threonine-protein kinase 10

Target Alias: GEK2; STK10; Lymphocyte-oriented kinase; PRO2729

Product Type Specific: Protein kinase phosphosite-specific antibody

Antibody Code: PK685

Antibody Target Type: Phosphosite-specific

Antibody Phosphosite: S191

Protein UniProt: O94804

Protein SigNET: O94804

Antibody Type: Polyclonal

Antibody Host Species: Rabbit

Antibody Immunogen Source: Human LOK sequence peptide Cat. No.: PE-04AKO99
Antibody Immunogen Sequence: KRD(pS)FIG(bA)C

Antibody Immunogen Description: Corresponds to amino acid residues K188 to G194; 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 120-140 kDa.
Antibody Specificity: High

Antibody Cross Reactivity: No significant cross-reactive proteins detected in MCF7 and HeLa cells, except for cross-reactive proteins of ~75 and 90 kDa.

Related Product 1: LOK-pS191 blocking peptide

Related Product 2: LOK-pT952 phosphosite-specific antibody (Cat. No.: AB-PK686)

Related Product 3: IRS1 (979-989) KinSub - Insulin receptor substrate 1 (K979-G989, mouse) peptide; Insulin receptor substrate

Scientific Background: LOK (STK10) is a protein-serine/threonine kinase of the STE group and STE20 family. It can control lymphocyte migration via its phosphotransferase activity. LOK has been shown to phosphorylate MSN and has been implicated in phosphorylating Plk1. LOK can negatively regulate MEKK1/MAP3K1, and may also mediate cell cycle progression. A K65I mutation in LOK seen with Testicular germ cell tumour (TGCT) can induce loss of kinase phosphotransferase activity.
Figure 1. Epitope mapping of LOK-pS191 antibody with similar phosphopeptides on dot blots.


Figure 2. Identification of phosphosites related to LOK-pS191.