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. Author manuscript; available in PMC: 2014 Jun 30.
Published in final edited form as: Nat Chem Biol. 2013 Sep 29;9(11):693–700. doi: 10.1038/nchembio.1352

Figure 6. An acetylation-independent mechanism for sirtuin function in extending lifespan.

Figure 6

Turnover of the sirtuin cofactor NAD+ to NA and subsequent irreversible methylation to MNA results in generation of hydrogen peroxide by GAD-3 and a downstream mitohormetic response yielding increased stress resistance.