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(Memo Item created on October 19, 2011 09:06
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The structure of ATP synthase, the universal protein that manufactures ATP;
Photo courtesy of Professor George Oster; Department of Molecular and Cell
Biology, University of California, Berkeley [2000](IR92)
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The structure of ATP synthase, the
universal protein that manufactures ATP; Photo courtesy of Professor George
Oster; Department of Molecular and Cell Biology, University of California,
Berkeley [2000](IR92)
The structure of ATP synthase, the
universal protein that manufactures ATP.
The structure of ATP synthase consists of
two rotary motors, labeled F1 and Fo, that are connected by a flexible shaft. Under normal operation, the Fo motor uses the energy stored in a transmembrane
ion gradient to drive the F1 motor in reverse so that ATP is synthesized from ADP and phosphate.
In bacteria, anerobic conditions
wipe out the ion gradient whereupon the F1 part becomes a motor,
using the energy of ATP hydrolysis
to turn the Fo part in reverse so
that it functions as an ion
pump.
Oster, G., and Wang, H. (2000). Reverse
engineering a protein: The mechanochemistry of ATP synthase. Biochimica
et Biophysica Acta 1458, 482-510.
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