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| | Biochemical Alpha Screen Assay |
| Description: | A biotin labeled peptide is used as substrate (amino acid sequence: Biotin-Glu-Gly-Pro-Trp-Leu-Glu-Glu-Glu-Glu-Glu-Ala-Tyr-Gly-Trp-Met-Asp-Phe-NH2)1SEQ ID NO: 1). FAK enzyme was expressed in insect cells as catalytic domain (amino acids 411-686)N-terminally tagged with six histidine amino acids and a Tobacco Etch Virus (TeV) cleavage sequence. After lysing the cells by sonication, the kinase was purified by Ni-Immobilised Metal Affinity Chromatography chromatography, TeV cleavage leaving a N-terminal glycine, and gel filtration. The 15 ul assay reactions are run in Greiner brand white 384-well low volume plates. All reactions contained 10 mM HEPES pH 7.4, 25 mM NaCl, 10 mM MgCl2, 0.01% (v/v) Tween-20, 50 uM Na3V04, 0.01% (w/v) albumin from chicken egg white, 111 nM peptide substrate, 80 uM ATP, and 4 ng/reaction FAK enzyme, with the enzyme being omitted from negative control reactions. Compounds were added in a volume of 100 nl from dilution series made up in DMSO. |
| Affinity data for this assay | |
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