The SirT3 divining rod points to oxidative stress.

@article{Bell2011TheSD,
  title={The SirT3 divining rod points to oxidative stress.},
  author={Eric L. Bell and Leonard P. Guarente},
  journal={Molecular cell},
  year={2011},
  volume={42 5},
  pages={561-8}
}
Sirtuins are NAD(+) dependent deacetylases that counter aging and diseases of aging. Sirtuin research has focused on SirT1, which deacetylates transcription factors and cofactors in the nucleus. More recent findings highlight SirT3 as a mitochondrial sirtuin that regulates metabolism and oxidative stress. This review focuses on new data linking SirT3 to management of reactive oxygen species from mitochondria, which may have profound implications for aging and late-onset diseases. 

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