Cited by 169Mitochondrial Function and PathologyATP Synthase and ATPases ResearchAdipose Tissue and Metabolism

Mitochondrial proton leak and the uncoupling protein 1 homologues

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Stuart, J.A, Cadenas, S, Jekabsons, M.B, Roussel, D, Brand, M.D·2001·Biochimica et Biophysica Acta (BBA) - Bioenergetics

Abstract

Mitochondrial proton leak is the largest single contributor to the standard metabolic rate (SMR) of a rat, accounting for about 20% of SMR. Yet the mechanisms by which proton leak occurs are incompletely understood. The available evidence suggests that both phospholipids and proteins in the mitochondrial inner membrane are important determinants of proton conductance. The uncoupling protein 1 homologues (e.g. UCP2, UCP3) may play a role in mediating proton leak, but it is unlikely they account for all of the observed proton conductance. Experimental data regarding the functions of these proteins include important ambiguities and contradictions which must be addressed before their function can be confirmed. The physiological role of the proton leak, and of the uncoupling protein 1 homologues, remains similarly unclear.

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  1. B. Cannon, A. Matthias, V. Golozoubova, K.B.E. Ohlson, U. Andersson, A. Jacobsson, J. Nedergaard, Unifying and distinguishing features of brown and white adipose tissues: UCP1 versus other UCPs, in: G. Ailhaud, B. Guy-Grands (Eds.), Progress in Obesity Research, John Libbey and Com- pany, 1999, pp. 13^26.
  2. M.B. Jekabsons, B.A. Horwitz, Nucleotide e¡ects on liver and muscle mitochondrial nonphosphorylating respiration and membrane potential, Biochim. Biophys. Acta, in press.

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Authors
Stuart, J. A., Cadenas, S., Jekabsons, M. B., Roussel, D., & Brand, M. D.
Affiliations
  • University of Cambridge (GB)
  • MRC Mitochondrial Biology Unit (GB)
Corresponding author
Brand, M.D
Venue
Biochimica et Biophysica Acta (BBA) - Bioenergetics
Publisher
Elsevier BV
Published
2001-03
Volume
1504
Issue
1
Pages
144-158
ISSN
0005-2728 (ISSN-L)
OpenAlex
W2051826214
Cited by
169
References
74
Citations by year
2026: 3 · 2025: 1 · 2024: 1 · 2023: 2 · 2022: 4 · 2021: 3 · 2020: 7 · 2019: 4 · 2018: 6 · 2017: 3 · 2016: 2 · 2015: 4 · 2014: 2 · 2013: 5 · 2012: 5
FWCI
1.51
Type
journal article
Language
en
Open access
Locations
  • Biochimica et Biophysica Acta (BBA) - Bioenergetics (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › ATP Synthase and ATPases Research
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
mitochondrial proton leak, UCP2, UCP3, inner mitochondrial membrane, proton conductance, standard metabolic rate, mitochondrial membrane phospholipids, mitochondrial membrane proteins
MeSH terms
Uncoupling Protein 2, Uncoupling Protein 3, Uncoupling Protein 1, Amino Acid Sequence, Animals, Basal Metabolism, Carrier Proteins, Diffusion, Humans, Intracellular Membranes, Ion Channels, Membrane Proteins, Mitochondria, Molecular Sequence Data, Proteins, Protons, RNA, Messenger, Sequence Alignment, Sequence Homology, Models, Animal, Mitochondrial Proteins, Membrane Transport Proteins, Animals, Genetically Modified

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