Cited by 513ATP Synthase and ATPases ResearchMitochondrial Function and PathologyEnzyme Structure and Function

Bioenergetic cost of making an adenosine triphosphate molecule in animal mitochondria

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Watt, Ian N., Montgomery, Martin G., Runswick, Michael J., Leslie, Andrew G. W., Walker, John E.·2010·Proceedings of the National Academy of Sciences

Abstract

The catalytic domain of the F-ATPase in mitochondria protrudes into the matrix of the organelle, and is attached to the membrane domain by central and peripheral stalks. Energy for the synthesis of ATP from ADP and phosphate is provided by the transmembrane proton-motive-force across the inner membrane, generated by respiration. The proton-motive force is coupled mechanically to ATP synthesis by the rotation at about 100 times per second of the central stalk and an attached ring of c-subunits in the membrane domain. Each c-subunit carries a glutamate exposed around the midpoint of the membrane on the external surface of the ring. The rotation is generated by protonation and deprotonation successively of each glutamate. Each 360° rotation produces three ATP molecules, and requires the translocation of one proton per glutamate by each c-subunit in the ring. In fungi, eubacteria, and plant chloroplasts, ring sizes of c 10 –c 15 subunits have been observed, implying that these enzymes need 3.3–5 protons to make each ATP, but until now no higher eukaryote has been examined. As shown here in the structure of the bovine F 1 -c-ring complex, the c-ring has eight c-subunits. As the sequences of c-subunits are identical throughout almost all vertebrates and are highly conserved in invertebrates, their F-ATPases probably contain c 8 -rings also. Therefore, in about 50,000 vertebrate species, and probably in many or all of the two million invertebrate species, 2.7 protons are required by the F-ATPase to make each ATP molecule.

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  • Oxidative phosphorylation is the largest source of cellular ATP.

    “Whereas oxidative phosphorylation is the largest source of cellular ATP, the potential energy generated by the ETC is also harnessed for biosynthetic purposes.”

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Authors
Watt, I. N., Montgomery, M. G., Runswick, M. J., Leslie, A. G. W., & Walker, J. E.
Affiliations
  • MRC Mitochondrial Biology Unit (GB)
  • MRC Laboratory of Molecular Biology (GB)
Venue
Proceedings of the National Academy of Sciences
Published
2010-09-16
Volume
107
Issue
39
Pages
16823-16827
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2052618584
Cited by
513
References
31
Citations by year
2026: 14 · 2025: 24 · 2024: 23 · 2023: 24 · 2022: 37 · 2021: 32 · 2020: 46 · 2019: 29 · 2018: 29 · 2017: 33 · 2016: 30 · 2015: 43 · 2014: 29 · 2013: 46 · 2012: 41
FWCI
15.62
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • DORA PSI (Paul Scherrer Institute) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › ATP Synthase and ATPases Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
Keywords
F-ATPase, mitochondrial ATP synthase, bioenergetics, ATP production, proton motive force, C ring, subunit c, proton translocation, proton stoichiometry, mitochondrial respiration
MeSH terms
Adenosine Diphosphate, Adenosine Triphosphate, Amino Acid Sequence, Animals, Catalysis, Cattle, Energy Metabolism, Proton-Translocating ATPases, Mitochondria, Molecular Sequence Data, Catalytic Domain

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