| Assay Method Information | |
| | Biochemical Deacetylation Assay |
| Description: | Modulation of sirtuin activity by compounds was assessed using the Flour de Lys fluorescent biochemical assay in a 96-well format as described (Outeiro et al., 2007). The deacetylation reaction was performed at 37° C. for an hour in the presence of human recombinant enzymes: SIRT1 (BioMol-SE-239) 1 unit/per reaction, SIRT2 (BioMol-SE-251) 5 units/per reaction, or SIRT3 (BioMol-SE-270) 5 units/per reaction, compound of interest, standard buffer, 50 μM substrate, and 500 μM NAD+ according to the manufacturer's protocol.The neuroprotective properties of several selective sirtuin-2 (SIRT2) deacetylase inhibitors in Parkinson's and Huntington's disease models were previously characterized (Chopra et al., 2012; Luthi-Carter et al., 2010; Outeiro et al., 2007). For analyzing the SIRT2 inhibition mechanism of MIND4 in a continuous coupled enzymatic assay with an α-tubulin peptide substrate, the recombinant enzyme was prepared and its activity analyzed as described previously [Moniot, 2013]. The IC50 for MIND4 was determined using α-tubulin and NAD+ at 150 μM and 500 μM, respectively. The titration with NAD+ was performed at 150 μM α-tubulin peptide, and the peptide titration at 1 mM NAD+. Data analysis and fitting was done in Grafit 7 (Erithacus Software, Horley, UK). |
| Affinity data for this assay | |
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