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Cat. Number
065870144335397
Chemical Name
SIRT3 Direct Fluorescent Screening Assay Kit
References
Stability 1 year
Storage -80°C
Shipping Dry ice in continental US; may vary elsewhere

Background Reading

Grunstein, M. Histone acetylation in chromatin structure and transcription. Nature 389 349-352 (1997 Sep 25).

Strahl, B.D., and Allis, D. The language of covalent histone modifications. Nature 403 41-45 (2000 Jan 6).

Tanny, J.C., and Moazed, D. Coupling of histone deacetylation to NAD breakdown by the yeast silencing protein Sir2: Evidence for acetyl transfer from substrate to an NAD breakdown product. Proc Natl Acad Sci USA 98(2) 415-420 (2001).

Frye, R.A. Phylogenetic classification of prokaryotic and eukaryotic Sir2-like proteins. Biochem Biophys Res Commun 273 793-798 (2000).

Onyango, P., Celic, I., McCaffery, J.M., et al. SIRT3, a human SIR2 homologue, is an NAD-dependent deacetylase localized to mitochondria. Proc Natl Acad Sci USA 99(21) 13653-13658 (2002).

Schwer, B., North, B.J., Frye, R.A., et al. The human silent information regulator (Sir)2 homologue hSIRT3 is a mitochondrial nicotinamide adenine dinucleotide-dependent deacetylase. J Cell Biol 158(4) 647-657 (2002).

Scher, M.B., Vaquero, A., and Reinberg, D. SirT3 is a nuclear NAD+-dependent histone deacetylase that translocates to the mitochondria upon cellular stress. Genes Dev 21 920-928 (2007).

Shi, T., Wang, F., Stieren, E., et al. SIRT3, a mitochondrial sirtuin deacetylase, regulates mitochondrial function and thermogenesis in brown adipocytes. J Biol Chem 280(14) 13560-13567 (2005).

Hallows, W.C., Lee, S., and Denu, J.M. Sirtuins deacetylate and activate mammalian acetyl-CoA synthetases. Proc Natl Acad Sci USA 103(27) 10230-10235 (2006).

Fujino, T., Kondo, J., Ishikawa, M., et al. Acetyl-CoA synthetase 2, mitochondrial matrix enzyme involved in the oxidation of acetate. J Biol Chem 276(14) 11420-11426 (2001).

Schwer, B., Bunkenborg, J., Verdin, R.O., et al. Reversible lysine acetylation controls the activity of the mitochondrial enzyme acetyl-CoA synthetase 2. Proc Natl Acad Sci USA 103(27) 10224-10229 (2006).

Bellizzi, D., Rose, G., Cavalcante, P., et al. A novel VNTR enhancer within the SIRT3 gene, a human homologue of SIR2, is associated with survival at oldest ages. Genomics 85 258-263 (2004).

Cheung, W.L., Briggs, D.B., and Allis, C.D. Acetylation and chromosomal functions. Curr Opin Cell Biol 12 326-333 (2000 Jan 1).

Imai, S., Armstrong, C.M., Kaeberlein, M., et al. Transcriptional silencing and longevity protein Sir2 is an NAD-dependent histone deacetylase. Nature 403 795-800 (2000).

Tanner, K.G., Landry, J., Sternglanz, R., et al. Silent information regulator 2 family of NAD-dependent histone/protein deacetylases generates a unique product, 1-O-acetyl-ADP-ribose. Proc Natl Acad Sci USA 97(26) 14178-14182 (2000).

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10011566-96well
Half Volume 96-Well Solid Plate (white)
SIRT3 Direct Assay Buffer (10X) 1 ea
SIRT3 (human recombinant) Direct Assay Reagent 2 × 1 ea
SIRT3 Direct Peptide 2 × 1 ea
SIRT3 Direct NAD+ 1 ea
SIRT3 Direct Nicotinamide 1 ea
SIRT3 Direct Developer 1 ea
SIRT3 Direct Fluorophore 1 ea
Size Global Purchasing
96 wells  

Description

The sirtuins represent a distinct class of trichostatin A-insensitive lysyl-deacetylases (class III HDACs) that catalyze a reaction coupling lysine deacetylation to the formation of nicotinamide and O-acetyl-ADP-ribose. SIRT3 is a mitochondrial protein that plays a role in metabolic regulation and other cellular processes. It is the only human sirtuin with a direct genetic link with longevity. Additional research needs to be done to further elucidate the mechanism behind the involvement of SIRT3 in metabolic dysfunction, aging, cancer, and neurodegenerative disease. Cayman’s SIRT3 Direct Fluorescent Screening Assay Kit provides a convenient fluorescence-based method for screening SIRT3 inhibitors or activators. The procedure requires only two easy steps, both performed in the same microplate. In the first step, the substrate, which comprises the p53 sequence Gln-Pro-Lys-Lys(e-acetyl)-AMC, is incubated with human recombinant SIRT3 along with its cosubstrate NAD+. Deacetylation sensitizes the substrate such that treatment with the developer in the second step releases a fluorescent product. The fluorophore can be analyzed with an excitation wavelength of 350-360 nm and an emission wavelength of 450-465 nm.

 

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