Cited by 410Mitochondrial Function and PathologyATP Synthase and ATPases ResearchMetabolism, Diabetes, and Cancer

The basal proton conductance of mitochondria depends on adenine nucleotide translocase content

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Brand, Martin D., Pakay, Julian L., Ocloo, Augustine, Kokoszka, Jason, Wallace, Douglas C., Brookes, Paul S., Cornwall, Emma J.·2005·Biochemical Journal

Abstract

The basal proton conductance of mitochondria causes mild uncoupling and may be an important contributor to metabolic rate. The molecular nature of the proton-conductance pathway is unknown. We show that the proton conductance of muscle mitochondria from mice in which isoform 1 of the adenine nucleotide translocase has been ablated is half that of wild-type controls. Overexpression of the adenine nucleotide translocase encoded by the stress-sensitive B gene in Drosophila mitochondria increases proton conductance, and underexpression decreases it, even when the carrier is fully inhibited using carboxyatractylate. We conclude that half to two-thirds of the basal proton conductance of mitochondria is catalysed by the adenine nucleotide carrier, independently of its ATP/ADP exchange or fatty-acid-dependent proton-leak functions.

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  1. Cornwall, E. (2004) The role of the adenine nucleotide translocase in mitochondrial proton leak, PhD thesis, pp. 197, University of Cambridge, Cambridge 42

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Authors
Brand, M. D., Pakay, J. L., Ocloo, A., Kokoszka, J., Wallace, D. C., Brookes, P. S., & Cornwall, E. J.
Affiliations
  • MRC Mitochondrial Biology Unit (GB)
  • Emory University (US)
  • Department of Molecular and Cellular Pathology, University of Birmingham, Birmingham, AL 35294, U.S.A.
Corresponding author
Ocloo, Augustine
Venue
Biochemical Journal
Published
2005-11-22
Volume
392
Issue
2
Pages
353-362
ISSN
  • 0264-6021 (ISSN-L)
  • 1470-8728
OpenAlex
W1996324277
Cited by
410
References
52
Citations by year
2026: 6 · 2025: 20 · 2024: 13 · 2023: 23 · 2022: 25 · 2021: 20 · 2020: 25 · 2019: 17 · 2018: 13 · 2017: 19 · 2016: 14 · 2015: 18 · 2014: 23 · 2013: 21 · 2012: 23
FWCI
6.60
Type
journal article
Language
en
Open access
Locations
  • Biochemical Journal (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Cambridge Commonwealth Trust
  • National Institutes of Health
  • Medical Research Council
  • National Institute of Neurological Disorders and Stroke (NS 41850, R01NS041850)
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
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
Keywords
adenine nucleotide translocase, adenine nucleotide carrier, mitochondrial uncoupling, muscle mitochondria, B gene, carboxyatractylate, ADP/ATP exchange, metabolic rate
MeSH terms
Mitochondrial ADP, ATP Translocases, Animals, Cattle, Drosophila melanogaster, Female, Horses, Male, Membrane Potentials, Mitochondria, Phospholipids, Protein Binding, Protons, Rabbits, Swine, Gene Expression Regulation, Enzymologic, Mice, Knockout, Cell Respiration, Drosophila Proteins, Mice, Rats

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