Assay Report Card

ID: ALA3706227

Type: Binding

Description: Enzyme Assay: The TACE enzyme is an internal production (carried out according to the publication protein Eng Des Sel, 2006, 19, 155-161) and is added so as to have a signal equivalent to 6 times the background noise over 2 h at 37° C. The reaction takes place in a buffered medium: Tris 50 mM, 4% of glycerol, pH 7.4. The fluorescent substrate is MCA-Pro-Leu-Ala-Val-(Dpa)-Arg-Ser-Ser-Arg-NH2 (R&D system reference: ES003). The substrate is cleaved by the enzyme between alanine and valine thus releasing a fluorescent peptide (excitation: 320 nm, emission: 420 nm). The substrate is used at 40 μM. The reaction is carried out in a final volume of 10 μl (4 μl inhibitor, 4 μl substrate, 2 μl enzyme) in a plate of 384 low-volume wells (Corning reference: 3676). The plate is incubated for 2 h at ambient temperature, then read in fluorescence mode using a Pherastar (BMG labtech).