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Layered mechanisms regulating the human mitochondrial NAD+ transporter SLC25A51
Shivansh Goyal1, Xiaolu A Cambronne1
1Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712, U.S.A.
Biochemical Society Transactions
|December 18, 2023
Summary
The mitochondrial NAD+ transporter SLC25A51 has a unique mechanism of action. Its import activity is regulated by its structure, microenvironment, and ligand properties.
Area of Science:
- Biochemistry
- Molecular Biology
- Cellular Respiration
Background:
- SLC25A51 is the main mitochondrial NAD+ transporter in humans.
- Its unique structure compared to other mitochondrial carriers makes its mechanism unclear.
- Understanding SLC25A51 is crucial for controlling cellular respiration and NAD+ levels.
Approach:
- This review discusses recent insights into the transport mechanism of SLC25A51.
- It highlights a multitiered regulation governing NAD+ transport.
- Examines factors influencing SLC25A51 import activity: transporter structure, microenvironment, and ligand properties.
Key Points:
- SLC25A51 mediates the influx of oxidized NAD+ into mitochondria.
- Regulation involves the transporter's intrinsic structural characteristics.
- The surrounding microenvironment and properties of NAD+ also play regulatory roles.
Conclusions:
- Recent findings reveal novel insights into SLC25A51's transport mechanism.
- These mechanisms offer new strategies for modulating transporter activity.
- New mechanistic models for the mitochondrial carrier family are proposed.
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