SensoLyte® 520 FRET Sirt1 Assay Kit Fluorimetric - 1 kit

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  • Cat.Number : AS-72155
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    In stock
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Histone deacetylase (HDAC) enzymes act as transcriptional repressors of genes through the deacetylation of lysine residues on histone proteins. Sirtuins (SIRTs) are a unique class of deacetylases (class III HDACs) that require NAD as a cofactor. Sirtuin 1 (SIRT1) is involved in regulation of tumor suppressor p53 and inhibition of apoptosis. It also represents a target for treatment of age-related diseases and type II diabetes.
The SensoLyte® 520 FRET SIRT1 Assay Kit provides a convenient, two-step homogeneous procedure for measuring sirtuin 1 activity using a FRET substrate. In the first step, an acetylated substrate is incubated with SIRT1 containing samples. Deacetylation of substrate first sensitizes it, so that, in the second step mixing with the SIRT developer generates a fluorophore, which can then be detected at Ex/Em= 490/520 nm. This kit can be used for high throughput screening of SIRT1 inhibitors/activators. The long wavelength fluorescence of FRET substrate is less interfered by the autofluorescence of cell components and test compounds. The nuclear extract HDAC (containing HDACs 1 and 2) does not deacetylate FRET sirtuin substrate. Assays are performed in a standard 96-well format.


Kits components
  • Component A: SIRT1 520 FRET substrate: 1 mM, 50 µL Component B: Deacetylated FRET reference substrate, Ex/Em=490 nm/520 nm after cleavage: 1 mM, 20 µL Component C: SIRT1, Human Recombinant: 0.025 mg/mL, 400 µL Component D: Assay Buffer: 20 mL Component E: NAD+: 20 mM, 100 µL Component F: Nicotinamide (Sirtuin Inhibitor): 30 mM, 0.5 mL Component G: SIRT1 Developer (10X): 0.5 mL
UniProt number
  • Q96EB6
Absorbance (nm)
  • 490
Emission (nm)
  • 520
Storage & stability
Storage Conditions
  • Store component C at -80°C. Store all other components at -20°C. Component D can be stored at room temperature for convenience. Protect components A and B from light and moisture.
Biomarker Target
Detection Method
Detection Limit
  • 13 ng/ml
Research Area
Sub-category Research Area
  • Research use
Code Nacres
  • NA.32

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