'''Acetyl-CoA''' is a very important molecule in metabolism since it is used in many biochemical reactions. It is the precursor to [[HMG-CoA]], which is a vital component in [[cholesterol]] and [[Ketone bodies|ketone]] synthesis. Furthermore, it contributes an acetyl group to [[choline]] to produce [[acetylcholine]], in a reaction catalysed by [[choline acetyltransferase]]. Its main task is conveying the [[carbon]] [[atom]]s within the acetyl group to the citric acid cycle to be [[oxidation|oxidized]] for energy production.