Histone deacetylases (HDACs) are a large family of enzymes that remove acetyl groups from histone proteins. Site specific histone acetylation and deacetylation have been shown to activate or repress eukaryotic gene transcription, respectively, and as a consequence, it plays a crucial role in mammalian development and disease. HDACs are involved in important biological activities, such as cell differentiation, proliferation, apoptosis, and senescence.
With Sigma′s HDAC3 Activity Assay Kit, HDAC3 present in a test sample will act with the supplied Developer, to deacetylate and then cleave the HDAC3 Substrate [R-H-K-K(Ac)-AFC]. This activity will release the quenched fluorescent group, AFC, which can be detected at Em/Ex = 380/500 nm. Trichostatin A is an HDAC inhibitor included in the kit to verify HDAC3 activity. The kit provides a rapid, simple, sensitive and reliable test. It is suitable for either individual tests or high throughput assays, from nuclear extracts, purified, or immunoprecipitated HDAC3, and from native, recombinant, or genetically modified HDAC3.