Journal
EUROPEAN BIOPHYSICS JOURNAL WITH BIOPHYSICS LETTERS
Volume 50, Issue 2, Pages 159-172Publisher
SPRINGER
DOI: 10.1007/s00249-021-01515-7
Keywords
Voltage dependent anion channel; Solid-state NMR; Magic-angle spinning; Membrane protein; Electrophysiology; Molecular dynamics simulations
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Funding
- Projekt DEAL
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The study reviews the structure, gating models, and potential drug targets of VDAC protein. It also explores the sensitivity of VDAC structure to variations in membrane environments, finding that it remains unchanged in different membrane compositions.
The voltage-dependent anion channel (VDAC) is one of the most highly abundant proteins found in the outer mitochondrial membrane, and was one of the earliest discovered. Here we review progress in understanding VDAC function with a focus on its structure, discussing various models proposed for voltage gating as well as potential drug targets to modulate the channel's function. In addition, we explore the sensitivity of VDAC structure to variations in the membrane environment, comparing DMPC-only, DMPC with cholesterol, and near-native lipid compositions, and use magic-angle spinning NMR spectroscopy to locate cholesterol on the outside of the beta-barrel. We find that the VDAC protein structure remains unchanged in different membrane compositions, including conditions with cholesterol.
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