4hfe

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==The GLIC pentameric Ligand-Gated Ion Channel F14'A ethanol-sensitive mutant complexed to ethanol==
==The GLIC pentameric Ligand-Gated Ion Channel F14'A ethanol-sensitive mutant complexed to ethanol==
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<StructureSection load='4hfe' size='340' side='right' caption='[[4hfe]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
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<StructureSection load='4hfe' size='340' side='right'caption='[[4hfe]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[4hfe]] is a 5 chain structure with sequence from [http://en.wikipedia.org/wiki/Glovi Glovi]. The November 2015 RCSB PDB [http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Glutamate-gated Chloride Receptors'' by David Goodsell is [http://dx.doi.org/10.2210/rcsb_pdb/mom_2015_11 10.2210/rcsb_pdb/mom_2015_11]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4HFE OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4HFE FirstGlance]. <br>
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<table><tr><td colspan='2'>[[4hfe]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Gloeobacter_violaceus_PCC_7421 Gloeobacter violaceus PCC 7421]. The November 2015 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Glutamate-gated Chloride Receptors'' by David Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2015_11 10.2210/rcsb_pdb/mom_2015_11]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4HFE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4HFE FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=EOH:ETHANOL'>EOH</scene>, <scene name='pdbligand=LMT:DODECYL-BETA-D-MALTOSIDE'>LMT</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=PLC:DIUNDECYL+PHOSPHATIDYL+CHOLINE'>PLC</scene>, <scene name='pdbligand=UNL:UNKNOWN+LIGAND'>UNL</scene></td></tr>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.8&#8491;</td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4hfb|4hfb]], [[4hfc|4hfc]], [[4hfd|4hfd]], [[4hfh|4hfh]]</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=EOH:ETHANOL'>EOH</scene>, <scene name='pdbligand=LMT:DODECYL-BETA-D-MALTOSIDE'>LMT</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=PLC:DIUNDECYL+PHOSPHATIDYL+CHOLINE'>PLC</scene>, <scene name='pdbligand=UNL:UNKNOWN+LIGAND'>UNL</scene></td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">glvI, glr4197 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=251221 GLOVI])</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4hfe FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4hfe OCA], [https://pdbe.org/4hfe PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4hfe RCSB], [https://www.ebi.ac.uk/pdbsum/4hfe PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4hfe ProSAT]</span></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4hfe FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4hfe OCA], [http://pdbe.org/4hfe PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4hfe RCSB], [http://www.ebi.ac.uk/pdbsum/4hfe PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4hfe ProSAT]</span></td></tr>
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</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/GLIC_GLOVI GLIC_GLOVI]] Cationic channel with similar permeabilities for Na(+) and K(+), that is activated by an increase of the proton concentration on the extracellular side. Displays no permeability for chloride ions. Shows slow kinetics of activation, no desensitization and a single channel conductance of 8 pS. Might contribute to adaptation to external pH change.<ref>PMID:17167423</ref>
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[https://www.uniprot.org/uniprot/GLIC_GLOVI GLIC_GLOVI] Cationic channel with similar permeabilities for Na(+) and K(+), that is activated by an increase of the proton concentration on the extracellular side. Displays no permeability for chloride ions. Shows slow kinetics of activation, no desensitization and a single channel conductance of 8 pS. Might contribute to adaptation to external pH change.<ref>PMID:17167423</ref>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Ethanol alters nerve signalling by interacting with proteins in the central nervous system, particularly pentameric ligand-gated ion channels. A recent series of mutagenesis experiments on Gloeobacter violaceus ligand-gated ion channel, a prokaryotic member of this family, identified a single-site variant that is potentiated by pharmacologically relevant concentrations of ethanol. Here we determine crystal structures of the ethanol-sensitized variant in the absence and presence of ethanol and related modulators, which bind in a transmembrane cavity between channel subunits and may stabilize the open form of the channel. Structural and mutagenesis studies defined overlapping mechanisms of potentiation by alcohols and anaesthetics via the inter-subunit cavity. Furthermore, homology modelling show this cavity to be conserved in human ethanol-sensitive glycine and GABA(A) receptors, and to involve residues previously shown to influence alcohol and anaesthetic action on these proteins. These results suggest a common structural basis for ethanol potentiation of an important class of targets for neurological actions of ethanol.
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Structural basis for potentiation by alcohols and anaesthetics in a ligand-gated ion channel.,Sauguet L, Howard RJ, Malherbe L, Lee US, Corringer PJ, Harris RA, Delarue M Nat Commun. 2013;4:1697. doi: 10.1038/ncomms2682. PMID:23591864<ref>PMID:23591864</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 4hfe" style="background-color:#fffaf0;"></div>
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==See Also==
==See Also==
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*[[Ion channels|Ion channels]]
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*[[Ion channels 3D structures|Ion channels 3D structures]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Glovi]]
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[[Category: Gloeobacter violaceus PCC 7421]]
[[Category: Glutamate-gated Chloride Receptors]]
[[Category: Glutamate-gated Chloride Receptors]]
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[[Category: Large Structures]]
[[Category: RCSB PDB Molecule of the Month]]
[[Category: RCSB PDB Molecule of the Month]]
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[[Category: Corringer, P J]]
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[[Category: Corringer PJ]]
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[[Category: Delarue, M]]
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[[Category: Delarue M]]
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[[Category: Harris, R A]]
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[[Category: Harris RA]]
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[[Category: Howard, R J]]
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[[Category: Howard RJ]]
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[[Category: Lee, U S]]
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[[Category: Lee US]]
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[[Category: Malherbe, L]]
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[[Category: Malherbe L]]
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[[Category: Sauguet, L]]
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[[Category: Sauguet L]]
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[[Category: Ion-channel]]
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[[Category: Membrane protein]]
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[[Category: Pentameric transmembrane channel]]
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[[Category: Transport protein]]
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Current revision

The GLIC pentameric Ligand-Gated Ion Channel F14'A ethanol-sensitive mutant complexed to ethanol

PDB ID 4hfe

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