ANT1 Protein is a protein encoded by the [SLC25A4](/genes/slc25a4) gene that ant1 catalyzes the exchange of mitochondrial atp for cytosolic adp:. This page describes its structure, normal nervous system function, role in neurodegenerative disease, and potential as a therapeutic target.
ANT1 (Adenine Nucleotide Translocase 1), encoded by [SLC25A4](/genes/slc25a4), is a mitochondrial carrier protein that exchanges ADP and ATP across the inner mitochondrial membrane.
ANT1 Protein is a protein encoded by the [SLC25A4](/genes/slc25a4) gene that ant1 catalyzes the exchange of mitochondrial atp for cytosolic adp:. This page describes its structure, normal nervous system function, role in neurodegenerative disease, and potential as a therapeutic target.
ANT1 (Adenine Nucleotide Translocase 1), encoded by [SLC25A4](/genes/slc25a4), is a mitochondrial carrier protein that exchanges ADP and ATP across the inner mitochondrial membrane.
Protein Infobox
Structure
ANT1 is a 326-amino acid protein with three tandem repeats, each containing a conserved motif. The protein forms a bundle of six transmembrane helices that create a pore across the mitochondrial inner membrane. The substrate binding site is located in the center of the pore.
Normal Function
ANT1 catalyzes the exchange of mitochondrial ATP for cytosolic ADP:
Forward transport: Exports newly synthesized ATP from mitochondria to cytosol
Reverse transport: Imports ADP from cytosol for ATP synthesis
Required for oxidative phosphorylation: Essential for cellular energy production
Regulates mitochondrial membrane potential: Maintains the proton gradient
Role in Neurodegeneration
Mitochondrial Myopathy and Encephalomyopathy
ANT1 mutations cause mitochondrial myopathy (MIM 103560)
Symptoms include exercise intolerance, cardiomyopathy, and lactic acidosis
Ragged-red fibers observed in muscle biopsies
Alzheimer's Disease
Reduced ANT1 activity in AD brains
Impaired ATP export contributes to energy deficits
ANT1 dysfunction may contribute to mitochondrial complex I deficiency
Altered mitochondrial ATP/ADP exchange in dopaminergic [neurons](/entities/neurons)
May sensitize neurons to environmental toxins
Amyotrophic Lateral SALS
Altered mitochondrial energy metabolism in ALS
ANT1 may be affected by mutant SOD1
Reduced ATP production contributes to motor neuron vulnerability
Sideroblastic Anemia with B cell Intramedullary Hematopoiesis
SLC25A38 mutations cause this disorder (MIM 205950)
Therapeutic Targeting
Coenzyme Q10: Improves mitochondrial function
L-carnitine: Supports fatty acid oxidation and mitochondrial function
Riboflavin: Supports mitochondrial metabolism
Mitochondrial peptides: SS-31 (MitoQ) being studied
Key Publications
[@palmieri2004]: Palmieri F. [The mitochondrial transporter family (SLC25): physiological and pathological implications](https://pubmed.ncbi.nlm.nih.gov/15650848/). Pflugers Arch. 2004;447(5):689-709.
[@fiore2000]: Fiore C, et al. [Mitochondrial adenine nucleotide translocase: a target for neuroprotection](https://pubmed.ncbi.nlm.nih.gov/10813814/). J Bioenerg Biomembr. 2000;32(2):141-150.
[@klingenberg2008]: Klingenberg M. [The ADP/ATP carrier and mitochondrial permeability transition](https://doi.org/10.1002/ijcb.20180). Int J Biochem Cell Biol. 2008;40(12):2626-2631.
[@browne2009]: Browne SE, et al. [Mitochondrial dysfunction in Alzheimer's disease](https://pubmed.ncbi.nlm.nih.gov/17482545/). J Bioenerg Biomembr. 2009;41(6):445-450.
Related Pages
[SLC25A4 Gene](/genes/slc25a4)
[Mitochondrial dysfunction in neurodegeneration](/mitochondrial-dysfunction-in-neurodegeneration)
[Palmieri F, The mitochondrial transporter family (SLC25): physiological and pathological implications (2004)](https://pubmed.ncbi.nlm.nih.gov/15650848/)
[Fiore C, et al, Mitochondrial adenine nucleotide translocase: a target for neuroprotection (2000)](https://pubmed.ncbi.nlm.nih.gov/10813814/)
[Klingenberg M, The ADP/ATP carrier and mitochondrial permeability transition (2008)](https://doi.org/10.1002/ijcb.20180)
[Browne SE, et al, Mitochondrial dysfunction in Alzheimer's disease (2009)](https://pubmed.ncbi.nlm.nih.gov/17482545/)