8fe1
From Proteopedia
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(New page: '''Unreleased structure''' The entry 8fe1 is ON HOLD Authors: Description: Category: Unreleased Structures) |
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| - | '''Unreleased structure''' | ||
| - | + | ==Alpha1/BetaB Heteromeric Glycine Receptor in 1 mM Glycine 20 uM Ivermectin State== | |
| + | <StructureSection load='8fe1' size='340' side='right'caption='[[8fe1]], [[Resolution|resolution]] 3.00Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[8fe1]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Danio_rerio Danio rerio]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8FE1 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8FE1 FirstGlance]. <br> | ||
| + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3Å</td></tr> | ||
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=D10:DECANE'>D10</scene>, <scene name='pdbligand=GLY:GLYCINE'>GLY</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=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=PLM:PALMITIC+ACID'>PLM</scene>, <scene name='pdbligand=PX4:1,2-DIMYRISTOYL-SN-GLYCERO-3-PHOSPHOCHOLINE'>PX4</scene></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=8fe1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8fe1 OCA], [https://pdbe.org/8fe1 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8fe1 RCSB], [https://www.ebi.ac.uk/pdbsum/8fe1 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8fe1 ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/GLRA1_DANRE GLRA1_DANRE] Glycine receptors are ligand-gated chloride channels. Channel opening is triggered by extracellular glycine (PubMed:10188956, PubMed:26344198). Plays an important role in the down-regulation of neuronal excitability. Contributes to the generation of inhibitory postsynaptic currents. Channel activity is potentiated by ethanol (By similarity).[UniProtKB:P23415]<ref>PMID:10188956</ref> <ref>PMID:26344198</ref> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Glycine Receptors (GlyRs) provide inhibitory neuronal input in the spinal cord and brainstem, which is critical for muscle coordination and sensory perception. Synaptic GlyRs are a heteromeric assembly of alpha and beta subunits. Here we present cryo-EM structures of full-length zebrafish alpha1beta(B)GlyR in the presence of an antagonist (strychnine), agonist (glycine), or agonist with a positive allosteric modulator (glycine/ivermectin). Each structure shows a distinct pore conformation with varying degrees of asymmetry. Molecular dynamic simulations found the structures were in a closed (strychnine) and desensitized states (glycine and glycine/ivermectin). Ivermectin binds at all five interfaces, but in a distinct binding pose at the beta-alpha interface. Subunit-specific features were sufficient to solve structures without a fiduciary marker and to confirm the 4alpha:1beta stoichiometry recently observed. We also report features of the extracellular and intracellular domains. Together, our results show distinct compositional and conformational properties of alpha(1)betaGlyR and provide a framework for further study of this physiologically important channel. | ||
| - | + | , PMID:36914669<ref>PMID:36914669</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | [[Category: | + | </div> |
| + | <div class="pdbe-citations 8fe1" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Danio rerio]] | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Chakrapani S]] | ||
| + | [[Category: Gibbs E]] | ||
Current revision
Alpha1/BetaB Heteromeric Glycine Receptor in 1 mM Glycine 20 uM Ivermectin State
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