Protein acetylation in metabolism - metabolites and cofactors
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Sirtuins (Sirts) compose a family of NAD(+)-dependent deacetylases and/or ADP-ribosyltransferases, which have been implicated in aging, metabolism, and tolerance to oxidative stress. Many of the biological processes regulated by Sirts result from the adapt ...
Sirtuins comprise a unique class of nicotinamide adenine dinucleotide (NAD(+))-dependent deacetylases that target multiple protein substrates to execute diverse biological functions. These enzymes are key regulators of clinically important cellular and org ...
To characterize the catalytic mechanism for zinc-dependent histone deacetylases (HDAC), we have carried out d. functional theory (DFT) QM/MM studies on the deacetylation reaction catalyzed by a histone-deacetylase-like protein (HDLP). The calcn. results do ...
Histone deacetylases (HDACs) constitute an important family of zinc-dependent enzymes responsible for catalyzing the cleavage of acetyl groups from acetyl-lysine residues in histone N-terminal tails. HDACs can potentially play a key role treating various c ...
A review. Histone deacetylase inhibitors are an emerging class of antiproliferative agents that have the potential to combat cancer on an epigenetic level. The recently reported marine natural product largazole was recently isolated in trace amts. from cya ...
KAP1 is an essential cofactor of KRAB-zinc finger proteins, a family of vertebrate-specific epigenetic repressors of largely unknown functions encoded in the hundreds by the mouse and human genomes. Here, we report that KAP1 is expressed at high levels and ...
The sirtuin family of histone deacetylases (HDACs) was named after their homology to the Saccharomyces cerevisiae gene silent information regulator 2 (Sir2). In the yeast, Sir2 has been shown to mediate the effects of calorie restriction on the extension o ...
Sirtuins or Sir2 (silent information regulator 2)-related enzymes have originally been defined as a family of nicotinamide adenine dinucleotide-dependent enzymes that deacetylate lysine residue on various proteins. Certain sirtuins have in addition an ADP- ...
Despite their initial characterization as histone deacetylases controlling transcription, sirtuins also turn out to be critical regulators of metabolism. In this issue of Cell, Haigis et al. (2006) demonstrate that the mammalian Sir2 homolog SIRT4 acts in ...
he oncoprotein SET/TAF-Ibeta is a histone chaperone which is involved in cell-cycle control and chromatin remodeling. Confocal laser scanning microscopy reveals that SET is localized in distinct foci of variable size throughout the nucleoplasm of interphas ...