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C├ęcile Martel, Zhenyu Wang, Catherine Brenner
The voltage-dependent anion channel (VDAC) or porin is a major membrane protein integrated into the mitochondrial outer membrane in eukaryotes. It is encoded as three isoforms (VDAC1 to 3), which play differential roles in metabolism and cell death. As a channel, VDAC mediates metabolites, ions and water movements through the outer membrane in physiological conditions, but it can also participate to mitochondrial membrane permeabilization, an apoptotic checkpoint in stress and pathological conditions. Indeed, due to its subcellular location, VDAC interacts with many molecules as diverse as NAD+, lipids and cytosolic proteins such as hexokinase, tubulin, GSK3, Bax and Bcl-2 family members and mitochondrial proteins, such as the adenine nucleotide translocase (ANT)...
November 2014: Mitochondrion
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