What is ATP in the Body?

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ATP stands for adenosine triphosphate. It is commonly called the energy currency of the cell because it stores and transports the chemical energy needed for almost all cellular and bodily functions. 

Structure of ATP

Adenine: A nitrogen-based molecule.
Ribose: A five-carbon sugar molecule.
Three phosphate groups: A chain of three phosphates linked by high-energy bonds, which act as the main power source. 

How ATP Works

Energy Release: When the body needs energy, a phosphate group breaks off from ATP.
Conversion to ADP: This release turns ATP into adenosine diphosphate (ADP), which has only two phosphate groups.
Recycling: The body uses energy from food (like glucose) to attach a phosphate back onto ADP, turning it back into ATP. 

Key Uses in the Body

Powering muscle contractions
Pumping substances across cell membranes (active transport)
Sending nerve signals
Building large proteins and DNA/RNA molecules 

Would you like to know more about how your body turns food into ATP through cellular respiration, or how much ATP your muscles use during exercise?

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  National Institutes of Health (NIH) | (.gov)

  Physiology, Adenosine Triphosphate - StatPearls - NCBI - NIH

  Feb 13, 2023 — The structure of ATP is a nucleoside triphosphate, consisting of a nitrogenous base (adenine), a ribose sugar, and 3 serially bond...
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  Encyclopedia Britannica

  Adenosine triphosphate (ATP) | Definition, Structure, Function, & Facts | Britannica

  Jun 29, 2026 — Cells require chemical energy for three general types of tasks: to drive metabolic reactions that would not occur automatically; t...

  

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Adenosine triphosphate

Wikipedia

https://en.wikipedia.org › wiki › Adenosine_triphosphate

Adenosine triphosphate (ATP) is a nucleoside triphosphate that provides free energy of approximately 58 kJ/mol (0.6 eV) to drive and support many processes ...

Chemical properties

Production from AMP and ADP

Biochemical functions