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Cited by 353

The DOI matches its Crossref record; 98 of the 98 references it cites were found in a registry or an index.

The Protonmotive Q Cycle in Mitochondria and Bacteria

Brandt, Ulrich, Trumpower, Bernard·1994·Critical Reviews in Biochemistry and Molecular Biology

Abstract

The cytochrome bc1 complex is an oligomeric electron transfer enzyme located in the inner membrane of mitochondria and the plasma membrane of bacteria. The cytochrome bc1 complex participates in respiration in eukaryotic cells and also participates in respiration, cyclic photosynthetic electron transfer, denitrification, and nitrogen fixation in a phylogenetically diverse collection of bacteria. In all of these organisms, the cytochrome bc1 complex transfers electrons from ubiquinol to cytochrome c and links this electron transfer to translocation of protons across the membrane in which it resides, thus converting the available free energy of the oxidation-reduction reaction into an electrochemical proton gradient. The mechanism by which the cytochrome bc1 complex achieves this energy transduction is the protonmotive Q cycle. The Q cycle mechanism has been documented by extensive experimentation, and recent investigations have focused on structural features of the three redox subunits of the bc1 complex essential to the protonmotive and electrogenic activities of this membranous enzyme.

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Metadata

Authors
Brandt, U., & Trumpower, B.
Venue
Critical Reviews in Biochemistry and Molecular Biology
Published
1994-01
Volume
29
Issue
3
Pages
165-197
ISSN
  • 0045-6411 (ISSN-L)
  • 1040-9238
  • 1549-7798
OpenAlex
W2048484224
Cited by
353
References
98
FWCI
1.45
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: The Protonmotive Q Cycle in Mitochondria and Bacteria. https://app.cochat.ai/papers/10.3109/10409239409086800
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Brandt, U., & Trumpower, B. (1994). The Protonmotive Q Cycle in Mitochondria and Bacteria. Critical Reviews in Biochemistry and Molecular Biology. https://doi.org/10.3109/10409239409086800

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