Cited by 53Mitochondrial Function and PathologyMetabolism, Diabetes, and CancerAutophagy in Disease and Therapy

Adenine Nucleotide Translocase Is Acetylated in Vivo in Human Muscle: Modeling Predicts a Decreased ADP Affinity and Altered Control of Oxidative Phosphorylation

Open access
Mielke, Clinton, Lefort, Natalie, McLean, Carrie G., Cordova, Jeanine M., Langlais, Paul R., Bordner, Andrew J., Te, Jerez A., Ozkan, S. Banu +2 more·2014·Biochemistry

Abstract

Proteomics techniques have revealed that lysine acetylation is abundant in mitochondrial proteins. This study was undertaken (1) to determine the relationship between mitochondrial protein acetylation and insulin sensitivity in human skeletal muscle, identifying key acetylated proteins, and (2) to use molecular modeling techniques to understand the functional consequences of acetylation of adenine nucleotide translocase 1 (ANT1), which we found to be abundantly acetylated. Eight lean and eight obese nondiabetic subjects had euglycemic clamps and muscle biopsies for isolation of mitochondrial proteins and proteomics analysis. A number of acetylated mitochondrial proteins were identified in muscle biopsies. Overall, acetylation of mitochondrial proteins was correlated with insulin action (r = 0.60; P < 0.05). Of the acetylated proteins, ANT1, which catalyzes ADP–ATP exchange across the inner mitochondrial membrane, was acetylated at lysines 10, 23, and 92. The extent of acetylation of lysine 23 decreased following exercise, depending on insulin sensitivity. Molecular dynamics modeling and ensemble docking simulations predicted the ADP binding site of ANT1 to be a pocket of positively charged residues, including lysine 23. Calculated ADP–ANT1 binding affinities were physiologically relevant and predicted substantial reductions in affinity upon acetylation of lysine 23. Insertion of these derived binding affinities as parameters into a complete mathematical description of ANT1 kinetics predicted marked reductions in adenine nucleotide flux resulting from acetylation of lysine 23. Therefore, acetylation of ANT1 could have dramatic physiological effects on ADP–ATP exchange. Dysregulation of acetylation of mitochondrial proteins such as ANT1 therefore could be related to changes in mitochondrial function that are associated with insulin resistance.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1021/bi401651e

Cites

44 of 44 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Mielke, C., Lefort, N., McLean, C. G., Cordova, J. M., Langlais, P. R., Bordner, A. J., Te, J. A., Ozkan, S. B., Willis, W. T., & Mandarino, L. J.
Affiliations
  • Arizona State University (US)
  • Mayo Clinic in Arizona (US)
Corresponding author
Mandarino, Lawrence J.
Venue
Biochemistry
Published
2014-06-02
Volume
53
Issue
23
Pages
3817-3829
ISSN
  • 0006-2960 (ISSN-L)
  • 1520-4995
OpenAlex
W2314015436
Cited by
53
References
44
Citations by year
2026: 2 · 2024: 4 · 2023: 4 · 2022: 10 · 2021: 6 · 2020: 4 · 2019: 6 · 2018: 7 · 2017: 3 · 2016: 5 · 2015: 2
FWCI
1.37
Type
journal article
Language
en
Open access
Locations
  • Biochemistry (publishedVersion, other-oa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (R01DK047936, R01DK066483)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
lysine acetylation, mitochondrial protein acetylation, insulin sensitivity, skeletal muscle, ADP/ATP exchange, oxidative phosphorylation, insulin resistance, obesity, physical activity, molecular dynamics simulation, ensemble docking, mitochondrial function
MeSH terms
Acetylation, Adenosine Diphosphate, Adult, Binding Sites, Female, Humans, Insulin Resistance, Lysine, Male, Middle Aged, Mitochondria, Muscle, Motor Activity, Muscle Proteins, Obesity, Oxidative Phosphorylation, Protein Processing, Post-Translational, Down-Regulation, Body Mass Index, Muscle, Skeletal, Adenine Nucleotide Translocator 1, Molecular Dynamics Simulation, Molecular Docking Simulation

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review