3ria: Difference between revisions

Latest revision as of 06:43, 27 November 2024

C. elegans glutamate-gated chloride channel (GluCl) in complex with Fab, ivermectin and iodide.

Structural highlights

3ria is a 15 chain structure with sequence from Caenorhabditis elegans and Mus musculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 3.8Å
Ligands:	CL, IOD, IVM, LMT, OCT, UND
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Publication Abstract from PubMed

Fast inhibitory neurotransmission is essential for nervous system function and is mediated by binding of inhibitory neurotransmitters to receptors of the Cys-loop family embedded in the membranes of neurons. Neurotransmitter binding triggers a conformational change in the receptor, opening an intrinsic chloride channel and thereby dampening neuronal excitability. Here we present the first three-dimensional structure, to our knowledge, of an inhibitory anion-selective Cys-loop receptor, the homopentameric Caenorhabditis elegans glutamate-gated chloride channel alpha (GluCl), at 3.3 A resolution. The X-ray structure of the GluCl-Fab complex was determined with the allosteric agonist ivermectin and in additional structures with the endogenous neurotransmitter l-glutamate and the open-channel blocker picrotoxin. Ivermectin, used to treat river blindness, binds in the transmembrane domain of the receptor and stabilizes an open-pore conformation. Glutamate binds in the classical agonist site at subunit interfaces, and picrotoxin directly occludes the pore near its cytosolic base. GluCl provides a framework for understanding mechanisms of fast inhibitory neurotransmission and allosteric modulation of Cys-loop receptors.

Principles of activation and permeation in an anion-selective Cys-loop receptor.,Hibbs RE, Gouaux E Nature. 2011 May 15. PMID:21572436^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Hibbs RE, Gouaux E. Principles of activation and permeation in an anion-selective Cys-loop receptor. Nature. 2011 May 15. PMID:21572436 doi:10.1038/nature10139

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OCA

[1] Hibbs RE, Gouaux E. Principles of activation and permeation in an anion-selective Cys-loop receptor. Nature. 2011 May 15. PMID:21572436 doi:10.1038/nature10139

[1]

@@ Line 3: / Line 3: @@
 <StructureSection load='3ria' size='340' side='right'caption='[[3ria]], [[Resolution|resolution]] 3.80&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3ria]] is a 15 chain structure with sequence from [https://en.wikipedia.org/wiki/Caeel Caeel] and [https://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3RIA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3RIA FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3ria]] is a 15 chain structure with sequence from [https://en.wikipedia.org/wiki/Caenorhabditis_elegans Caenorhabditis elegans] and [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3RIA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3RIA FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=IOD:IODIDE+ION'>IOD</scene>, <scene name='pdbligand=IVM:(2AE,4E,5S,6S,6R,7S,8E,11R,13R,15S,17AR,20R,20AR,20BS)-6-[(2S)-BUTAN-2-YL]-20,20B-DIHYDROXY-5,6,8,19-TETRAMETHYL-17-OXO-3,4,5,6,6,10,11,14,15,17,17A,20,20A,20B-TETRADECAHYDRO-2H,7H-SPIRO[11,15-METHANOFURO[4,3,2-PQ][2,6]BENZODIOXACYCLOOCTADECINE-13,2-PYRAN]-7-YL+2,6-DIDEOXY-4-O-(2,6-DIDEOXY-3-O-METHYL-ALPHA-L-ARABINO-HEXOPYRANOSYL)-3-O-METHYL-ALPHA-L-ARABINO-HEXOPYRANOSIDE'>IVM</scene>, <scene name='pdbligand=LMT:DODECYL-BETA-D-MALTOSIDE'>LMT</scene>, <scene name='pdbligand=OCT:N-OCTANE'>OCT</scene>, <scene name='pdbligand=UND:UNDECANE'>UND</scene></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.8&#8491;</td></tr>
-<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[3rhw|3rhw]], [[3ri5|3ri5]], [[3rif|3rif]]</div></td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=IOD:IODIDE+ION'>IOD</scene>, <scene name='pdbligand=IVM:(2AE,4E,5S,6S,6R,7S,8E,11R,13R,15S,17AR,20R,20AR,20BS)-6-[(2S)-BUTAN-2-YL]-20,20B-DIHYDROXY-5,6,8,19-TETRAMETHYL-17-OXO-3,4,5,6,6,10,11,14,15,17,17A,20,20A,20B-TETRADECAHYDRO-2H,7H-SPIRO[11,15-METHANOFURO[4,3,2-PQ][2,6]BENZODIOXACYCLOOCTADECINE-13,2-PYRAN]-7-YL+2,6-DIDEOXY-4-O-(2,6-DIDEOXY-3-O-METHYL-ALPHA-L-ARABINO-HEXOPYRANOSYL)-3-O-METHYL-ALPHA-L-ARABINO-HEXOPYRANOSIDE'>IVM</scene>, <scene name='pdbligand=LMT:DODECYL-BETA-D-MALTOSIDE'>LMT</scene>, <scene name='pdbligand=OCT:N-OCTANE'>OCT</scene>, <scene name='pdbligand=UND:UNDECANE'>UND</scene></td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">glc-1, F11A5.10 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=6239 CAEEL])</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=3ria FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ria OCA], [https://pdbe.org/3ria PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3ria RCSB], [https://www.ebi.ac.uk/pdbsum/3ria PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3ria ProSAT]</span></td></tr>
 </table>
@@ Line 25: / Line 24: @@
 __TOC__
 </StructureSection>
-[[Category: Caeel]]
+[[Category: Caenorhabditis elegans]]
 [[Category: Large Structures]]
-[[Category: Lk3 transgenic mice]]
+[[Category: Mus musculus]]
-[[Category: Gouaux, E]]
+[[Category: Gouaux E]]
-[[Category: Hibbs, R E]]
+[[Category: Hibbs RE]]
-[[Category: Cys-loop receptor]]
-[[Category: Glycosylation]]
-[[Category: Ivermectin]]
-[[Category: Ligand-gated ion channel]]
-[[Category: Membrane protein]]
-[[Category: Neurotransmitter receptor]]
-[[Category: Picrotoxin]]
-[[Category: Transport protein]]
-[[Category: Transport protein-immune system complex]]

3ria: Difference between revisions

Latest revision as of 06:43, 27 November 2024

C. elegans glutamate-gated chloride channel (GluCl) in complex with Fab, ivermectin and iodide.

Structural highlights

Publication Abstract from PubMed

See Also

References

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