All pathways
NAD⁺ & Sirtuins
SIRT3
The mitochondrial sirtuin that deacetylates metabolic enzymes and enables mitochondrial quality control.
Role in aging
SIRT3 tunes the mitochondrial acetylome — activating SOD2 antioxidant defense and enzymes of fat oxidation and the TCA cycle. Because it runs on NAD⁺, restoring NAD⁺ is the primary lever on SIRT3 activity.