6dw0: Difference between revisions
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
==Cryo-EM structure of the benzodiazepine-sensitive alpha1beta1gamma2S tri-heteromeric GABAA receptor in complex with GABA (Whole map)== | ==Cryo-EM structure of the benzodiazepine-sensitive alpha1beta1gamma2S tri-heteromeric GABAA receptor in complex with GABA (Whole map)== | ||
<StructureSection load='6dw0' size='340' side='right' caption='[[6dw0]], [[Resolution|resolution]] 3.80Å' scene=''> | <StructureSection load='6dw0' size='340' side='right'caption='[[6dw0]], [[Resolution|resolution]] 3.80Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[6dw0]] is a 5 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6DW0 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6DW0 FirstGlance]. <br> | <table><tr><td colspan='2'>[[6dw0]] is a 5 chain structure with sequence from [http://en.wikipedia.org/wiki/Buffalo_rat Buffalo rat]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6DW0 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6DW0 FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ABU:GAMMA-AMINO-BUTANOIC+ACID'>ABU</scene>, <scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ABU:GAMMA-AMINO-BUTANOIC+ACID'>ABU</scene>, <scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr> | ||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[6dw1|6dw1]]</td></tr> | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[6dw1|6dw1]]</td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Gabrg2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10116 Buffalo rat]), Gabra1, Gabra-1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10116 Buffalo rat]), Gabrb1, Gabrb-1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10116 Buffalo rat])</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=6dw0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6dw0 OCA], [http://pdbe.org/6dw0 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6dw0 RCSB], [http://www.ebi.ac.uk/pdbsum/6dw0 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6dw0 ProSAT]</span></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=6dw0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6dw0 OCA], [http://pdbe.org/6dw0 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6dw0 RCSB], [http://www.ebi.ac.uk/pdbsum/6dw0 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6dw0 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
| Line 19: | Line 20: | ||
</div> | </div> | ||
<div class="pdbe-citations 6dw0" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 6dw0" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[GABA receptor 3D structures|GABA receptor 3D structures]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Buffalo rat]] | |||
[[Category: Large Structures]] | |||
[[Category: Gouaux, E]] | [[Category: Gouaux, E]] | ||
[[Category: Phulera, S]] | [[Category: Phulera, S]] | ||
Revision as of 20:22, 20 November 2019
Cryo-EM structure of the benzodiazepine-sensitive alpha1beta1gamma2S tri-heteromeric GABAA receptor in complex with GABA (Whole map)Cryo-EM structure of the benzodiazepine-sensitive alpha1beta1gamma2S tri-heteromeric GABAA receptor in complex with GABA (Whole map)
Structural highlights
Function[GBRG2_RAT] GABA, the major inhibitory neurotransmitter in the vertebrate brain, mediates neuronal inhibition by binding to the GABA/benzodiazepine receptor and opening an integral chloride channel. [GBRB1_RAT] Component of the heteropentameric receptor for GABA, the major inhibitory neurotransmitter in the vertebrate brain. Functions also as histamine receptor and mediates cellular responses to histamine. Functions as receptor for diazepines and various anesthetics, such as pentobarbital; these are bound at a separate allosteric effector binding site. Functions as ligand-gated chloride channel.[1] [2] [GBRA1_RAT] Component of the heteropentameric receptor for GABA, the major inhibitory neurotransmitter in the vertebrate brain. Functions also as histamine receptor and mediates cellular responses to histamine. Functions as receptor for diazepines and various anesthetics, such as pentobarbital; these are bound at a separate allosteric effector binding site. Functions as ligand-gated chloride channel.[3] [4] [5] Publication Abstract from PubMedFast inhibitory neurotransmission in mammalian nervous system is largely mediated by GABAA receptors, chloride-selective members of the superfamily of pentameric Cys-loop receptors. Native GABAA receptors are heteromeric assemblies sensitive to many important drugs, from sedatives to anesthetics and anticonvulsant agents, with mutant forms of GABAA receptors implicated in multiple neurological diseases. Despite profound importance of heteromeric GABAA receptors in neuroscience and medicine, they have proven recalcitrant to structure determination. Here we present the structure of tri-heteromeric alpha1beta1gamma2SEM GABAA receptor in complex with GABA, determined by single particle cryo-EM at 3.1-3.8 A resolution, elucidating molecular principles of receptor assembly and agonist binding. Remarkable N-linked glycosylation on the alpha1 subunit occludes the extracellular vestibule of the ion channel and is poised to modulate receptor assembly and perhaps ion channel gating. Our work provides a pathway to structural studies of heteromeric GABAA receptors and a framework for rational design of novel therapeutic agents. Cryo-EM structure of the benzodiazepine-sensitive alpha1beta1gamma2S tri-heteromeric GABAA receptor in complex with GABA.,Phulera S, Zhu H, Yu J, Claxton DP, Yoder N, Yoshioka C, Gouaux E Elife. 2018 Jul 25;7. pii: 39383. doi: 10.7554/eLife.39383. PMID:30044221[6] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
|
| ||||||||||||||||||||