Adenosine Triphosphate (ATP):

High-energy phosphoric ester (i.e. nucleotide) of the nucleotide adenosine, which functions as the principal energy-carrying compound in the cells of all living organisms. Its hydrolysis to ADP (adenosine diphosphate) and inorganic phosphate is accompanied by the release of a relatively large amount of free energy (34 kJ/mol at pH7) which is used to drive any many metabolic functions. (Allaby, 1998) See an animated video clip of ATP synthesis. This may take a few minutes to load depend on the speed of your computer. Also you may have to download a player to view it, such as Windows Media Player, QuickViewer, or Real Player.