Electric Forces and ATP Synthesis

Colin D McCaig1

  • 1Institute of Medical Sciences, University of Aberdeen, Aberdeen, Scotland, UK.

Summary

Adenosine triphosphate (ATP) synthase is a rotary motor enzyme. It expertly uses electrical forces to generate high-energy phosphates essential for life, a process also involving vacuolar ATPases and the ADP/ATP carrier.

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ATP Energy Storage and Release01:31

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ATP is a highly unstable molecule. Unless quickly used to perform work, ATP spontaneously dissociates into ADP and inorganic phosphate (Pi), and the free energy released during this process is lost as heat. The energy released by ATP hydrolysis is used to perform work inside the cell and depends on a strategy called energy coupling. Cells couple the exergonic reaction of ATP hydrolysis with endergonic reactions, allowing them to proceed.
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ATP Synthase: Mechanism01:48

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Coupled Reactions01:17

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Chemiosmosis01:32

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