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==Structure of the human voltage-dependent anion channel== | |||
<StructureSection load='2jk4' size='340' side='right'caption='[[2jk4]], [[Resolution|resolution]] 4.10Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[2jk4]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JK4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2JK4 FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 4.1Å</td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2jk4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2jk4 OCA], [https://pdbe.org/2jk4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2jk4 RCSB], [https://www.ebi.ac.uk/pdbsum/2jk4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2jk4 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/VDAC1_HUMAN VDAC1_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.<ref>PMID:11845315</ref> <ref>PMID:15033708</ref> <ref>PMID:18755977</ref> | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/jk/2jk4_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2jk4 ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The voltage-dependent anion channel (VDAC), also known as mitochondrial porin, is the most abundant protein in the mitochondrial outer membrane (MOM). VDAC is the channel known to guide the metabolic flux across the MOM and plays a key role in mitochondrially induced apoptosis. Here, we present the 3D structure of human VDAC1, which was solved conjointly by NMR spectroscopy and x-ray crystallography. Human VDAC1 (hVDAC1) adopts a beta-barrel architecture composed of 19 beta-strands with an alpha-helix located horizontally midway within the pore. Bioinformatic analysis indicates that this channel architecture is common to all VDAC proteins and is adopted by the general import pore TOM40 of mammals, which is also located in the MOM. | |||
Structure of the human voltage-dependent anion channel.,Bayrhuber M, Meins T, Habeck M, Becker S, Giller K, Villinger S, Vonrhein C, Griesinger C, Zweckstetter M, Zeth K Proc Natl Acad Sci U S A. 2008 Oct 7;105(40):15370-5. Epub 2008 Oct 1. PMID:18832158<ref>PMID:18832158</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 2jk4" style="background-color:#fffaf0;"></div> | |||
==See Also== | ==See Also== | ||
*[[Ion channels|Ion channels]] | *[[Ion channels 3D structures|Ion channels 3D structures]] | ||
== References == | |||
<references/> | |||
__TOC__ | |||
== | </StructureSection> | ||
< | |||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Bayrhuber | [[Category: Large Structures]] | ||
[[Category: Becker | [[Category: Bayrhuber M]] | ||
[[Category: Giller | [[Category: Becker S]] | ||
[[Category: Griesinger | [[Category: Giller K]] | ||
[[Category: Habeck | [[Category: Griesinger C]] | ||
[[Category: Meins | [[Category: Habeck M]] | ||
[[Category: Villinger | [[Category: Meins T]] | ||
[[Category: Vonrhein | [[Category: Villinger S]] | ||
[[Category: Zeth | [[Category: Vonrhein C]] | ||
[[Category: Zweckstetter | [[Category: Zeth K]] | ||
[[Category: Zweckstetter M]] | |||
Latest revision as of 12:38, 9 May 2024
Structure of the human voltage-dependent anion channelStructure 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] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe voltage-dependent anion channel (VDAC), also known as mitochondrial porin, is the most abundant protein in the mitochondrial outer membrane (MOM). VDAC is the channel known to guide the metabolic flux across the MOM and plays a key role in mitochondrially induced apoptosis. Here, we present the 3D structure of human VDAC1, which was solved conjointly by NMR spectroscopy and x-ray crystallography. Human VDAC1 (hVDAC1) adopts a beta-barrel architecture composed of 19 beta-strands with an alpha-helix located horizontally midway within the pore. Bioinformatic analysis indicates that this channel architecture is common to all VDAC proteins and is adopted by the general import pore TOM40 of mammals, which is also located in the MOM. Structure of the human voltage-dependent anion channel.,Bayrhuber M, Meins T, Habeck M, Becker S, Giller K, Villinger S, Vonrhein C, Griesinger C, Zweckstetter M, Zeth K Proc Natl Acad Sci U S A. 2008 Oct 7;105(40):15370-5. Epub 2008 Oct 1. PMID:18832158[4] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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