Figure 4

Schema outlining the opposing effects of the kinome and the acetylome on metabolism in response to energy availability. Fed conditions favor oxidative damage due to the induction of pro-metabolism pathways that are induced by insulin and other cytokines that signal a high-energy availability status that would inactivate sirtuins. A fasting state is proposed to activate sirtuins and should induce cellular pathways that conserve or increase cellular efficiency, resulting in energy conservation and preservation of cellular integrity.