5jdp
E73V mutant of the human voltage-dependent anion channel
Structural highlights
FunctionVDAC1_HUMAN Forms a channel through the mitochondrial outer membrane and also the plasma membrane. The channel at the outer mitochondrial membrane allows diffusion of small hydrophilic molecules; in the plasma membrane it is involved in cell volume regulation and apoptosis. It adopts an open conformation at low or zero membrane potential and a closed conformation at potentials above 30-40 mV. The open state has a weak anion selectivity whereas the closed state is cation-selective. May participate in the formation of the permeability transition pore complex (PTPC) responsible for the release of mitochondrial products that triggers apoptosis.[1] [2] [3] Publication Abstract from PubMed15 N spin-relaxation rates are demonstrated to provide critical information about the long-range structure and internal motions of membrane proteins. Combined with an improved calculation method, the relaxation-rate-derived structure of the 283-residue human voltage-dependent anion channel revealed an anisotropically shaped barrel with a rigidly attached N-terminal helix. Our study thus establishes an NMR spectroscopic approach to determine the structure and dynamics of mammalian membrane proteins at high accuracy and resolution. High-Resolution NMR Determination of the Dynamic Structure of Membrane Proteins.,Jaremko M, Jaremko L, Villinger S, Schmidt CD, Griesinger C, Becker S, Zweckstetter M Angew Chem Int Ed Engl. 2016 Jul 27. doi: 10.1002/anie.201602639. PMID:27461260[4] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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