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Trends Biochem Sci. 2003 Jan;28(1):41-8.

Linking chromatin function with metabolic networks: Sir2 family of NAD(+)-dependent deacetylases.

Author information

1
Department of Biochemistry and Molecular Biology, Oregon Health and Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97201, USA. denuj@ohsu.edu

Abstract

Chromatin remodeling enzymes rely on coenzymes derived from metabolic pathways, suggesting a tight synchronization among apparently diverse cellular processes. A unique example of this link is the recently described NAD(+)-dependent protein and/or histone deacetylases. The founding member of this family - yeast silent information regulator 2 (ySir2) - is involved in gene silencing, chromosomal stability and ageing. Sir2-like enzymes catalyze a reaction in which the cleavage of NAD(+)and histone and/or protein deacetylation are coupled to the formation of O-acetyl-ADP-ribose, a novel metabolite. The dependence of the reaction on both NAD(+) and the generation of this potential second messenger offers new clues to understanding the function and regulation of nuclear, cytoplasmic and mitochondrial Sir2-like enzymes.

PMID:
12517451
DOI:
10.1016/s0968-0004(02)00005-1
[Indexed for MEDLINE]

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