Product Name: HGK-pT187
Product Number: AB-PK653
Size: 25 µg      Price:89.00
      $US
Target Full Name: Mitogen-activated protein kinase kinase kinase kinase 4

Target Alias: FLH21957; Hepatocyte progenitor kinase-like/germinal center kinase-like kinase; HGK; HPK/GCK-like kinase HGK; M4K4; MAP4K4; MAPK kinase kinase kinase 4; MAPK/ERK kinase kinase kinase 4; MEK kinase kinase 4; MEKKK 4; MEKKK4; Mitogen-activated protein kinase kinase kinase kinase 4; Nck interacting kinase; NIK; FLJ10410; FLJ20373; FLJ90111; KIAA0687; NIK; O95819; ENSG0000007105

Product Type Specific: Protein kinase phosphosite-specific antibody

Antibody Code: PK653

Antibody Target Type: Phosphosite-specific

Antibody Phosphosite: T187

Protein UniProt: O95819

Protein SigNET: O95819
Antibody Type: Polyclonal

Antibody Host Species: Rabbit

Antibody Immunogen Source: Human HGK (ZC1) sequence peptide Cat. No.: PE-04ALN99

Antibody Immunogen Sequence: RRN(pT)FIG(bA)C

Antibody Immunogen Description: Corresponds to amino acid residues R184 to G190; 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: Weak immunoreactivity of a target-sized protein by Western blotting in serum-starved Jurkat cells treated with insulin for 5 minutes. 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 135-150 kDa.

Antibody Specificity: High-very high

Related Product 1: HGK-pT187 blocking peptide

Related Product 2: HGK-NT pan-specific antibody (Cat. No.: AB-NK300-1)

Scientific Background: ZC1 (HGK, MAP4K4) is a protein-serine/threonine kinase of the STE group and STE20 family. It may play a role in the response to environmental stress and cytokines such as TNF-alpha, and appears to act upstream of the JUN N-terminal pathway. ZC1 can phosphorylate SMAD1 at T322. Insertional mutagenesis studies in mice support a role for this protein kinase in mouse cancer oncogenesis.
Figure 1. Epitope mapping of HGK-pT187 antibody with similar phosphopeptides on dot blots.


Figure 2. Identification of phosphosites related to HGK-pT187.