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| | BACE-2 Cell-Free Assay |
| Description: | This assay measures the inhibition of the BACE2 enzyme as it cleaves a non-native peptide. A synthetic substrate that can be cleaved by BACE2 having N-terminal biotin and made fluorescent by the covalent attachment of Oregon Green at the Cys residue is used to assay BACE2 activity in the presence or absence of the inhibitory compounds. The substrate is Biotin-KEISEISYEVEFR-C(Oregon green)-KK-OH. The BACE2 enzyme is available from Enzo Life Sciences (Cat #BML-SE550). Compounds are incubated in a 1/2 log dose response curve from a top concentration of 100 uM with BACE2 enzyme and the biotinylated fluorescent peptide in 384-well black plates (Thermo Scientific #4318). BACE2 is at a final concentration of 2.5 nM with a final concentration of peptide substrate of 150 nM in a reaction volume of 30 uL assay buffer (100 mM Sodium Acetate, pH 4.5 (brought to pH with acetic acid), and 0.001% Tween-20). Plates are covered and incubated for 3 hours at 37° C. The reaction is stopped with the addition of 30 uL of 1.5 uM Streptavidin (Pierce, #21125). |
| Affinity data for this assay | |
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