Assay Method Information

Assay Name:  Enzyme Assay
Description:  The total volume of the ATG7 enzymatic assay is 50 μL and contains 50 mM HEPES Hemisodium (pH 7.5), 0.05% BSA, 0.01% Tween-20, 25 mM NaCl, 5 mM MgCl2, 10 μM ATP, 250 μM GSH, 5 nM ATG3-GST, 5 nM Flag-Gabarap, 100 μM TCEP and 0.15 nM recombinant human His-ATG7 enzyme. The enzymatic reaction mixture, with and without inhibitor, was incubated at 24° C. for 105 min in a 384-well plate before termination with 25 μM of Stop/Detection buffer (0.1M HEPES Hemisodium pH 7.5, 0.05% Tween20, 20 mM EDTA, 410 mM KF, 0.53 nM Europium-Cryptate labeled monoclonal anti-Flag M2 Antibody (CisBio International) and 8.125 μg/ml PHYCOLINK goat anti-GST allophycocyanin (XL-APC) antibody (Prozyme)). After incubation for 2 hours at 24° C., quantification of FRET is performed on the Pherostar (BMG Labtech). Percentage inhibition values at a single concentration or enzyme inhibition (IC50) values are determined from those curves. One skilled in the art will appreciate that the values generated either as percentage inhibition at a single concentration or IC50 values are subject to experimental variation.
Affinity data for this assay
 

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