Figure 1
From: A continuous sirtuin activity assay without any coupling to enzymatic or chemical reactions

(a) Sirtuin-mediated deacylation reaction transfers fluorescently labeled acyl residues from lysine side chain to ADP-ribose. (b) Sirtuin-mediated deacylation reaction transfers quencher-containing acyl residue from lysine side chain to ADP-ribose. In both cases sirtuin activity causes an increase in the fluorescence signal. (Fl – fluorophore, Qu – quencher, ADPr – ADP ribose)