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| | Time-Resolved Fluorescence Assay |
| Description: | The kinase activity of EGFR was detected according to time-resolved fluorescence detection technology to evaluate automatic phosphorylation levels. The test compound was dissolved in 100% DMSO, diluted with 25 mM HEPES (pH=7.4) to the desired concentration, added into each well with 10 μL of the test compounds and 10 μL solution containing 5 ng EGFR, then cultured for 10 min at room temperature using the recombinase diluted by 100 mM HEPES with a dilution ratio of 1:80, subsequently added with 10 μL solution containing 20 mM HEPES, 2 mM MnCl2, 100 μM Na3VO4, 1 mM DTT buffer, and 20 μL of 0.1 mM ATP and 50 mM MgCl2 and cultured for 1 h. The positive group in each plate was added with ATP-MgCl2 enzyme, the negative control group without adding with ATP-MgCl2 enzyme, the liquid was sucked out completely after cultured for 1 h, and each well was washed with buffer for three times. The wells were added with 75 μL anti-phosphorylated tyrosine antibody containing 400 ng europium labeling and cultured 1 h, washed, then added with enhancing solution. At the excitation wavelength 340 nm and the emission wavelength 615 nm, the fluorescence intensities were detected by using Victor type 2 time-resolved luminoscope, wherein the inhibitory rate of the compound on automatic phosphorylation: the inhibitory rate of autophosphorylation=100%−[(negative control)/(positive control−negative control)]. |
| Affinity data for this assay | |
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