Dear experts,

how exactly does ATP provide energy? What is its chemical formula?

A molecule of ATP contains three phosphate bonds. The last two phosphate radicals are attached by bonds of high transfer potential. They are also called energy rich bonds. The bond between second and third phosphate radicals possesses an energy equivalent of 34 kJ/mole. The bond linking the second phosphate radical with the first one has an energy equivalent of 26 kJ/mole. The last phosphate can be easily broken up and synthesised. An enzyme ATPase catalyses the breakdown of ATP into ADP thus releasing a large amount of energy.

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Adenosine triphosphate (ATP) is a nucleoside triphosphate used in cells as a coenzyme.

It is often called the "molecular unit of currency" of intracellular energy transfer.[1] ATP transports chemical energy within cells for metabolism. It is one of the end products of photophosphorylation, cellular respiration, and fermentation and used by enzymes and structural proteins in many cellular processes, including biosynthetic reactions, motility, and cell division.[2] One molecule of ATP contains three phosphate groups, and it is produced by a wide variety of enzymes, including ATP synthase, from adenosine diphosphate (ADP) or adenosine monophosphate (AMP) and various phosphate group donors. Substrate-level phosphorylation, oxidative phosphorylation in cellular respiration, and photophosphorylation in photosynthesis are three major mechanisms of ATP biosynthesis.

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 (8.8oz) of ATP,[3] turns over its own body weight equivalent in ATP each day.[4]

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chemical equation

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