| Assay Method Information | |
| | ELISA-Based Kinase Assay |
| Description: | Inhibition of erbB tyrosine kinase activity was assessed using an ELISA-based receptor tyrosine kinase assay. Kinase reactions (50 mM HEPES, pH 7.4, 125 mM NaCl, 10 mM MgCl2, 100 μM sodium orthovanadate, 2 mM dithiothreitol, 20 uM ATP, test compound or vehicle control and 1-5 nM GST-erbB per 50 uL reaction) were run in 96-well plates coated with 0.25 mg/ml poly-Glu-Tyr (Sigma). The reactions were incubated for 6 minutes at room temperature while shaking. Kinase reactions were stopped by removal of reaction mixture, then wells were washed with wash buffer comprising 3% Bovine Serum Albumin and 0.1% Tween 20 in Phosphate Buffered Saline (PBS). Phosphorylated tyrosine residues were detected by adding 0.2 μg/ml anti-phosphotyrosine antibody (Oncogene Ab-4; 50 μL/well) coupled to Horse Radish Peroxidase (HRP) for 25 minutes while shaking at room temperature. |
| Affinity data for this assay | |
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