Product Name: JNK1-pY185
Product Number: AB-PK670
Size: 25 µg      Price:89.00
      $US
Target Full Name: Jun N-terminus protein-serine kinase (stress-activated protein kinase (SAPK)) 1

Target Alias: c-Jun N-terminal kinase 1; JNK; JNK1A2; JNK1-alpha-2; JNK-46;JNK21B1/2; JUN N-terminal kinase; Kinase JNK1; MAPK8; MK08; PRKM8; SAPK1; SAPK1c; Stress-activated protein kinase JNK1; CCDS7225.1; ENSG00000107643

Product Type Specific: Protein kinase phosphosite-specific antibody

Antibody Code: PK670

Antibody Target Type: Phosphosite-specific

Antibody Phosphosite: Y185

Protein UniProt: P45983

Protein SigNET: P45983

Antibody Type: Polyclonal

Antibody Host Species: Rabbit

Antibody Immunogen Source: Human JNK1 (MAPK8) sequence peptide Cat. No.: PE-04AEM95

Antibody Immunogen Sequence: MTP(pY)VVT(bA)C

Antibody Immunogen Description: Corresponds to amino acid residues M182 to T188; 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 strong immunoreactivity with immunogen peptide on dot blots. Medium-strong immunoreactivity with recombinant human JNK1 on protein 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 43-46 kDa.

Antibody Specificity: Very high

Antibody Cross Reactivity: Strong immunoreactivity on protein dot blots with recombinant human JNK2, but very weak immunoreactivity with JNK3. No significant cross-reactive proteins detected in A431, A549, HeLa and MCF7 cells and in sea star oocytes, except for a ~77 kDa cross-reactive protein in A431 and Hela cells.

Related Product 1: JNK1-pY185 blocking peptide

Related Product 2: JNK1-1 pan-specific antibody (Cat. No.: AB-NK217-2)

Related Product 3: JNK1-2 pan-specific antibody (Cat. No.: AB-NK217-3)

Related Product 4: JNK2-1 pan-specific antibody (Cat. No.: AB-NK189-2)
Scientific Background: JNK1 (MAPK8) is a protein-serine/threonine kinase of the CMGC group and MAPK family. It is involved in the regulation of several cellular processes, including cell proliferation, differentiation, migration, transformation, and apoptosis, through the JNK/SAP signalling pathway. This pathway is activated by extracellular stimuli such as pro-inflammatory cytokines or physical stress, as well as signals of intracellular stress, such as misfolded proteins in the endoplasmic reticulum. Phosphorylation of T183 and Y185 by either of two dual specificity kinases, MAP2K4 and MAP2K7, increases phosphotransferase activity. It is inhibited by dual specificity phosphatases, such as DUSP1, which target the T183 and Y185 activatory phosphorylation sites.
Figure 1. Dot blotting JNK1-pY185 antibody with recombinant purified proteins.


Figure 2. Epitope mapping of JNK1-pY185 antibody with similar phosphopeptides on dot blots.


Figure 3. Identification of phosphosites related to JNK1-pY185.