3ri5: Difference between revisions

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[[Image:3ri5.png|left|200px]]
==C. elegans glutamate-gated chloride channel (GluCl) in complex with Fab, ivermectin and picrotoxin==
<StructureSection load='3ri5' size='340' side='right' caption='[[3ri5]], [[Resolution|resolution]] 3.40&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3ri5]] is a 15 chain structure with sequence from [http://en.wikipedia.org/wiki/Caenorhabditis_elegans Caenorhabditis elegans] and [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3RI5 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3RI5 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</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=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=OCT:N-OCTANE'>OCT</scene>, <scene name='pdbligand=RI5:(1AR,2AR,3S,6R,6AS,8AS,8BR,9R)-2A-HYDROXY-8B-METHYL-9-(PROP-1-EN-2-YL)HEXAHYDRO-3,6-METHANO-1,5,7-TRIOXACYCLOPENTA[IJ]CYCLOPROPA[A]AZULENE-4,8(3H)-DIONE'>RI5</scene>, <scene name='pdbligand=UND:UNDECANE'>UND</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3rhw|3rhw]]</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">glc-1, F11A5.10 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=6239 Caenorhabditis elegans])</td></tr>
<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=3ri5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ri5 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3ri5 RCSB], [http://www.ebi.ac.uk/pdbsum/3ri5 PDBsum]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== 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.


{{STRUCTURE_3ri5|  PDB=3ri5  |  SCENE=  }}
Principles of activation and permeation in an anion-selective Cys-loop receptor.,Hibbs RE, Gouaux E Nature. 2011 May 15. PMID:21572436<ref>PMID:21572436</ref>


===C. elegans glutamate-gated chloride channel (GluCl) in complex with Fab, ivermectin and picrotoxin===
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 
</div>
{{ABSTRACT_PUBMED_21572436}}
 
==About this Structure==
[[3ri5]] is a 15 chain structure with sequence from [http://en.wikipedia.org/wiki/Caenorhabditis_elegans Caenorhabditis elegans] and [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3RI5 OCA].


==See Also==
==See Also==
*[[Monoclonal Antibody|Monoclonal Antibody]]
*[[Monoclonal Antibody|Monoclonal Antibody]]
 
== References ==
==Reference==
<references/>
<ref group="xtra">PMID:021572436</ref><references group="xtra"/>
__TOC__
</StructureSection>
[[Category: Caenorhabditis elegans]]
[[Category: Caenorhabditis elegans]]
[[Category: Mus musculus]]
[[Category: Mus musculus]]
[[Category: Gouaux, E.]]
[[Category: Gouaux, E]]
[[Category: Hibbs, R E.]]
[[Category: Hibbs, R E]]
[[Category: Cys-loop receptor]]
[[Category: Cys-loop receptor]]
[[Category: Glycosylation]]
[[Category: Glycosylation]]

Revision as of 15:17, 9 December 2014

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

Structural highlights

3ri5 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.
Ligands:, , , , , ,
Gene:glc-1, F11A5.10 (Caenorhabditis elegans)
Resources:FirstGlance, OCA, RCSB, PDBsum

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.

See Also

References

  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

3ri5, resolution 3.40Å

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