NAD+-dependent deacetylases of the sirtuin family have long been implicated in lifespan regulation, and the significance and molecular mechanism (or mechanisms) of this effect have engendered spirited debate. Two articles now spotlight the catabolism of NAD+ itself as a mediator of lifespan regulation.
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Jasper, H. Longevity focuses on NAD+. Nat Chem Biol 9, 666–667 (2013). https://doi.org/10.1038/nchembio.1369
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DOI: https://doi.org/10.1038/nchembio.1369