Adenosine triphosphate

Adenosine triphosphate (ATP) is a `nucleoside triphosphate`_ used in cells as a coenzyme_.

Metabolic processes that use ATP as an energy source convert it back into its precursors. ATP is therefore continuously recycled in organisms. The human body, which on average contains only 250 grams (8.8 oz) of ATP, turns over its own body weight equivalent in ATP each day.


1   Function

ATP transports `chemical energy`_ within cells for metabolism.

2   Substance

ATP consists of adenosine — composed of an `adenine ring`_ and a `ribose sugar`_ — and three `phosphate groups`_ (triphosphate).

3   Production

3.1   Glycolysis

Glycolysis is the metabolic pathway that converts glucose into pyruvate_. The free energy released in this process is used to form the high-energy compounds ATP (adenosine triphosphate) and NADH (`reduced nicotinamide adenine dinucleotide`_).

4   History

ATP was discovered in 1929 by `Karl Lohmann`_, Fiske and Y. Subbarow of `Harvard Medical School`_.