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Finding the gas pedal on a slow sirtuin.


ABSTRACT: The class III histone deacetylase sirtuin 6 (SIRT6) modulates numerous functions in the cell by deacetylating histone lysine residues. Interestingly, SIRT6's efficiency in in vitro experiments is far greater against substrates carrying long-chain fatty acyl modifications such as myristoylated lysine compared with acetylated counterparts, but the deacetylase activity can be stimulated by fatty acids and small-molecule allosteric modulators. A new study helps to explain this puzzling activation using a novel activator, thorough kinetic investigation, and mutagenesis studies. These data help elucidate the molecular requirements for activation of SIRT6 and provide a foundation for development of activators for therapeutic purposes.

SUBMITTER: Nielsen AL 

PROVIDER: S-EPMC6996887 | BioStudies | 2020-01-01

REPOSITORIES: biostudies

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