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7725
HTScan® HER4/ErbB4 Kinase Assay Kit
Cellular Assay Kits
Assay Kit

HTScan® HER4/ErbB4 Kinase Assay Kit #7725

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HTScan® HER4/ErbB4 Kinase Assay Kit: Image 1
Western blot analysis of extracts from Jurkat cells treated with 1 mM pervanadate for 30 minutes prior to lysis, using P-Tyr-100 Phospho-Tyrosine Mouse mAb. Proteins were separated by 2-D electrophoresis prior to blotting.
HTScan® HER4/ErbB4 Kinase Assay Kit: Image 2
Immunohistochemical analysis of paraffin-embedded human breast carcinoma using Phospho-Tyrosine Mouse mAb (P-Tyr-100).
HTScan® HER4/ErbB4 Kinase Assay Kit: Image 3
Immunohistochemical analysis of paraffin-embedded human lung carcinoma using Phospho-Tyrosine Mouse mAb (P-Tyr-100).
HTScan® HER4/ErbB4 Kinase Assay Kit: Image 4
Immunohistochemical analysis of paraffin-embedded NCI-H1650 xenograft untreated (left) or lambda-phosphatase-treated (right), using Phospho-Tyrosine Mouse mAb (P-Tyr-100).
HTScan® HER4/ErbB4 Kinase Assay Kit: Image 5
Immunohistochemical analysis of paraffin-embedded human B-cell non-Hodgkin lymphoma, untreated (left) or lambda phosphatase treated (right), using Phospho-Tyrosine Mouse mAb (P-Tyr-100).
HTScan® HER4/ErbB4 Kinase Assay Kit: Image 6
Immunohistochemical analysis of paraffin-embedded human squamous cell lung carcinoma using Phospho-Tyrosine Mouse mAb (P-Tyr-100).
HTScan® HER4/ErbB4 Kinase Assay Kit: Image 7
Immunohistochemical analysis using Phospho-Tyrosine Mouse mAb (P-Tyr-100) on SignalSlide™ Phospho-EGF Receptor IHC Controls #8102 (paraffin-embedded KYSE450 cell pellets, untreated (left) or EGF-treated (right)).
HTScan® HER4/ErbB4 Kinase Assay Kit: Image 8
Immunohistochemical analysis of paraffin-embedded human soft tissue squamous cell carcinoma using Phospho-Tyrosine Mouse mAb (P-Tyr-100).
HTScan® HER4/ErbB4 Kinase Assay Kit: Image 9
Immunohistochemical analysis of paraffin-embedded normal human kidney using Phospho-Tyrosine Mouse mAb (P-Tyr-100).
HTScan® HER4/ErbB4 Kinase Assay Kit: Image 10
Immunohistochemical analysis of paraffin-embedded normal human lung using Phospho-Tyrosine Mouse mAb (P-Tyr-100).
HTScan® HER4/ErbB4 Kinase Assay Kit: Image 11
Immunohistochemical analysis of paraffin-embedded NCI-H1650 xenograft using Phospho-Tyrosine Mouse mAb (P-Tyr-100).
HTScan® HER4/ErbB4 Kinase Assay Kit: Image 12
Confocal immunofluorescent analysis of paraffin-embedded human lung adenocarcinoma using Phospho-Tyrosine Mouse mAb (P-Tyr-100) (red). Blue pseudocolor = DRAQ5® (fluorescent DNA dye).
HTScan® HER4/ErbB4 Kinase Assay Kit: Image 13
Immunofluorescent analysis of Swiss NIH/3T3 cells, serum-starved and stimulated with lysophosphatidic acid (LPA) (10 µM for 10 minutes) and fixed with PFA, using Phospho-Tyrosine Mouse mAb (P-Tyr-100) (red) and phalloidin for F-actin (green) LPA causes heavy tyrosine phosphorylation of proteins in focal adhesions, present at the tips of actin stress fibers. (Provided by Dr. Harry Mellor, University of Bristol.)
HTScan® HER4/ErbB4 Kinase Assay Kit: Image 14
Confocal immunofluorescence analysis of HeLa cells either stimulated with 20% serum (left) or untreated (right), using Phospho-Tyrosine Mouse mAb (P-Tyr-100) (red). Actin filaments have been labeled with fluorescein phalloidin. Blue pseudocolor = DRAQ5® (fluorescent DNA dye).
HTScan® HER4/ErbB4 Kinase Assay Kit: Image 15
Flow cytometric analysis of K562 cells, untreated (green) or Gleevec®- treated (blue), using Phospho-Tyrosine Mouse mAb (P-Tyr-100) compared to a nonspecific negative control antibody (red).
Inquiry Info.# 7725

Product Description

The kit provides a means of performing kinase activity assays with recombinant human HER4/ErbB4 kinase. It includes active HER4/ErbB4 kinase (supplied as a GST fusion protein), a biotinylated peptide substrate and a phospho-tyrosine antibody for detection of the phosphorylated form of the substrate peptide.
MW (kDa) Peptide substrate, Biotin-peptide: 2,166 Daltons. GST-HER4/ErbB4/ErbB4 Kinase: 102
Molecular Formula Peptide substrate, Biotin-peptide: 2,166 Daltons. GST-HER4/ErbB4 Kinase: 102 kDa.

Background

Research studies have implicated the HER/ErbB receptor tyrosine kinase family in normal development, cardiac function and cancer (1,2). HER4/ErbB4, like other family members, has four ectodomains, a single transmembrane domain and a cytoplasmic tail containing the active tyrosine kinase domain (3). By binding to neuregulins and/or EGF family ligands, ErbB4 forms either a homodimer or heterodimer with other ErbB family members, which results in receptor activation and signaling (3). ErbB4 is ubiquitously expressed with the highest expression occurring in brain and heart. The expression of ErbB4 in breast cancer, pediatric brain cancer and other types of carcinomas has been reported in research studies suggesting that ErbB4 expression is involved in both normal tissue development and carcinogenesis (3).
  1. Holbro, T. and Hynes, N.E. (2004) Annu Rev Pharmacol Toxicol 44, 195-217.
  2. Roskoski, R. (2004) Biochem Biophys Res Commun 319, 1-11.
  3. Carpenter, G. (2003) Exp Cell Res 284, 66-77.

Pathways & Proteins

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