adenosine triphosphate(redirected from ATP/ADP cycle)
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Related to ATP/ADP cycle: adenosine triphosphate
(Biochemistry) the full name of ATP1
adenosine triphosphate: a nucleotide that is the primary source of energy in all living cells because of its function in donating a phosphate group during biochemical activities; composed of adenosine, ribose, and three phosphate groups and formed by enzymatic reaction from adenosine diphosphate and an orthophosphate. Compare ADP.
1. (ATP) A substance that supplies the immediate energy needs of cell.
2. (ATP) A compound that stores chemical energy in cells.