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Continuous Sirtuin/HDAC (histone deacetylase) activity assay using thioamides as PET (Photoinduced Electron Transfer)-based fluorescence quencher
M. Zessin, M. Meleshin, Z. Simic, D. Kalbas, M. Arbach, P. Gebhardt, J. Melesina, S. Liebscher, F. Bordusa, W. Sippl, C. Barinka, M. Schutkowski
Bioorganic chemistry.
2021 ;
117 (-) :
105425.
[pub] 20211012
Jazyk angličtina Země Spojené státy americké
Typ dokumentu časopisecké články, práce podpořená grantem
Perzistentní odkaz
https://www.medvik.cz/link/bmc22011776
- MeSH
- fluorescenční barviva chemie farmakologie MeSH
- fotochemické procesy MeSH
- histondeacetylasy chemie genetika metabolismus MeSH
- lidé MeSH
- molekulární struktura MeSH
- pozitronová emisní tomografie * MeSH
- sirtuiny antagonisté a inhibitory chemie metabolismus MeSH
- thioamidy chemie farmakologie MeSH
- transport elektronů MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
Histone deacylase 11 and human sirtuins are able to remove fatty acid-derived acyl moieties from the ε-amino group of lysine residues. Specific substrates are needed for investigating the biological functions of these enzymes. Additionally, appropriate screening systems are required for identification of modulators of enzymatic activities of HDAC11 and sirtuins. We designed and synthesized a set of activity probes by incorporation of a thioamide quencher unit into the fatty acid-derived acyl chain and a fluorophore in the peptide sequence. Systematic variation of both fluorophore and quencher position resulted "super-substrates" with catalytic constants of up to 15,000,000 M-1s-1 for human sirtuin 2 (Sirt2) enabling measurements using enzyme concentrations down to 100 pM in microtiter plate-based screening formats. It could be demonstrated that the stalled intermediate formed by the reaction of Sirt2-bound thiomyristoylated peptide and NAD+ has IC50 values below 200 pM.
Citace poskytuje Crossref.org
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