via Biosingularity

University of Wisconsin-Madison researchers have found that sirtuins, a family of enzymes linked to a longer life span and healthier aging in humans, may orchestrate the activity of other enzymes involved in metabolic processes in the body.
Published in the Proceedings of the National Academy of Sciences, the study is the first to show that sirtuins directly control specific metabolic enzymes - called AceCSs - in mammalian cells.