Cited by 228Mitochondrial Function and PathologyATP Synthase and ATPases ResearchAdipose Tissue and Metabolism

UCP2 and UCP3 rise in starved rat skeletal muscle but mitochondrial proton conductance is unchanged

Cadenas, Susana, Buckingham, Julie A., Samec, Sonia, Seydoux, Josiane, Din, Nanni, Dulloo, Abdul G., Brand, Martin D.·1999·FEBS Letters

Abstract

The relationship between UCP2 and UCP3 expression and mitochondrial proton conductance of rat skeletal muscle was examined. Rats were starved for 24 h and the levels of UCP2 and UCP3 mRNA and UCP3 protein were determined by Northern and Western blots. Proton conductance was measured by titrating mitochondrial respiration rate and membrane potential with malonate. Starvation increased UCP2 and UCP3 mRNA levels more than 5‐fold and 4‐fold, respectively, and UCP3 protein levels by 2‐fold. However, proton conductance remained unchanged. These results suggest either that Northern and Western blots do not reflect the levels of active protein or that these UCPs do not catalyse the basal proton conductance in skeletal muscle mitochondria.

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Crossref · 10.1016/s0014-5793(99)01540-9

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Authors
Cadenas, S., Buckingham, J. A., Samec, S., Seydoux, J., Din, N., Dulloo, A. G., & Brand, M. D.
Affiliations
  • University of Cambridge (GB)
  • University of Geneva (CH)
  • Novo Nordisk (Denmark) (DK)
  • University of Fribourg (CH)
Corresponding author
Brand, Martin D.
Venue
FEBS Letters
Publisher
Wiley
Published
1999-11-30
Volume
462
Issue
3
Pages
257-260
ISSN
  • 0014-5793 (ISSN-L)
  • 1873-3468
OpenAlex
W2072444935
Cited by
227
References
25
Citations by year
2024: 2 · 2023: 1 · 2021: 3 · 2019: 6 · 2018: 5 · 2017: 2 · 2016: 4 · 2015: 8 · 2014: 3 · 2013: 12 · 2012: 5
FWCI
6.90
Type
journal article
Language
en
Open access
closed
Locations
  • FEBS Letters (publishedVersion)
  • PubMed (publishedVersion)
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
UCP2, UCP3, uncoupling proteins, skeletal muscle, starvation, mRNA expression, protein abundance, mitochondrial respiration, membrane potential
MeSH terms
Uncoupling Protein 2, Uncoupling Protein 3, Animals, Carrier Proteins, Electrophysiology, Female, Food Deprivation, Ion Channels, Kinetics, Mitochondria, Proteins, Protons, RNA, Messenger, Uncoupling Agents, Blotting, Northern, Blotting, Western, Rats, Wistar, Muscle, Skeletal, Mitochondrial Proteins, Membrane Transport Proteins, Rats

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