Cited by 447Mitochondrial Function and PathologyATP Synthase and ATPases ResearchMetabolism, Diabetes, and Cancer

Regulation of oxidative phosphorylation in the mammalian cell

Balaban, R. S.·1990·American Journal of Physiology-Cell Physiology

Abstract

The cell is capable of maintaining a steady-state flux of energy from mitochondrial oxidative phosphorylation, producing ATP, to the cytosolic adenosinetriphosphatases (ATPases), performing work. Considerable effort has been devoted to investigating the individual mechanisms involved in these two processes. However, less effort has been directed toward learning how these reactions of energy metabolism interact through the cytosol to maintain the observed steady state in the intact cell. The "classical" model for the cytosolic interaction of these two processes involves the feedback of ATP hydrolysis products, ADP and Pi, from the ATPases to oxidative phosphorylation. This model is based on data from isolated mitochondria in which the rate of oxidative phosphorylation is controlled by the concentration of ADP and Pi. Yet, recent data from intact tissues with high oxidative phosphorylation capacities (i.e., heart, brain, and kidney) indicate that the cytosolic concentration of ADP and Pi do not change significantly with work. These data imply that this simple feedback model is not adequate to explain the regulation of energy metabolism in these tissues. Other sites within the oxidative phosphorylation process must be playing a regulatory role or the kinetics of ATP synthesis must be very different than currently believed to establish the steady state. This review covers the potential sites within oxidative phosphorylation which may be regulated through cytosolic transducers to result in the necessary feedback network regulating the steady-state flow of energy in the cell. These sites will include substrate delivery to the cytochrome chain, the processes involved in the phosphorylation of ADP to ATP, and the delivery of oxygen.

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Crossref · 10.1152/ajpcell.1990.258.3.c377

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Authors
Balaban, R. S.
Affiliations
National Institutes of Health (US)
Corresponding author
Balaban, R. S.
Venue
American Journal of Physiology-Cell Physiology
Published
1990-03-01
Volume
258
Issue
3
Pages
C377-C389
ISSN
  • 0363-6143 (ISSN-L)
  • 1522-1563
OpenAlex
W2129533522
Cited by
446
References
73
Citations by year
2026: 4 · 2025: 4 · 2024: 6 · 2023: 4 · 2022: 8 · 2021: 11 · 2020: 8 · 2019: 8 · 2018: 9 · 2017: 6 · 2016: 14 · 2015: 11 · 2014: 8 · 2013: 10 · 2012: 14
FWCI
6.56
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Physiology-Cell Physiology (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
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
Keywords
oxidative phosphorylation, energy metabolism regulation, ATP hydrolysis, mitochondrial ATP production, oxygen delivery, heart, brain, kidney
MeSH terms
Adenosine Triphosphatases, Adenosine Triphosphate, Animals, Homeostasis, Mammals, Models, Biological, Oxidative Phosphorylation

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