1ftl

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(New page: 200px<br /><applet load="1ftl" size="450" color="white" frame="true" align="right" spinBox="true" caption="1ftl, resolution 1.8&Aring;" /> '''CRYSTAL STRUCTURE OF ...)
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[[Image:1ftl.jpg|left|200px]]<br /><applet load="1ftl" size="450" color="white" frame="true" align="right" spinBox="true"
 
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caption="1ftl, resolution 1.8&Aring;" />
 
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'''CRYSTAL STRUCTURE OF THE GLUR2 LIGAND BINDING CORE (S1S2J) IN COMPLEX WITH THE ANTAGONIST DNQX AT 1.8 A RESOLUTION'''<br />
 
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==Overview==
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==CRYSTAL STRUCTURE OF THE GLUR2 LIGAND BINDING CORE (S1S2J) IN COMPLEX WITH THE ANTAGONIST DNQX AT 1.8 A RESOLUTION==
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Crystal structures of the GluR2 ligand binding core (S1S2) have been, determined in the apo state and in the presence of the antagonist DNQX, the partial agonist kainate, and the full agonists AMPA and glutamate. The, domains of the S1S2 ligand binding core are expanded in the apo state and, contract upon ligand binding with the extent of domain separation, decreasing in the order of apo &gt; DNQX &gt; kainate &gt; glutamate approximately, equal to AMPA. These results suggest that agonist-induced domain closure, gates the transmembrane channel and the extent of receptor activation, depends upon the degree of domain closure. AMPA and glutamate also promote, a 180 degrees flip of a trans peptide bond in the ligand binding site. The, crystal packing of the ligand binding cores suggests modes for, subunit-subunit contact in the intact receptor and mechanisms by which, allosteric effectors modulate receptor activity.
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<StructureSection load='1ftl' size='340' side='right'caption='[[1ftl]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1ftl]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FTL OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1FTL FirstGlance]. <br>
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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]] 1.8&#8491;</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=DNQ:6,7-DINITROQUINOXALINE-2,3-DIONE'>DNQ</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></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=1ftl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ftl OCA], [https://pdbe.org/1ftl PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ftl RCSB], [https://www.ebi.ac.uk/pdbsum/1ftl PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ftl ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/GRIA2_RAT GRIA2_RAT] Receptor for glutamate that functions as ligand-gated ion channel in the central nervous system and plays an important role in excitatory synaptic transmission. L-glutamate acts as an excitatory neurotransmitter at many synapses in the central nervous system. Binding of the excitatory neurotransmitter L-glutamate induces a conformation change, leading to the opening of the cation channel, and thereby converts the chemical signal to an electrical impulse. The receptor then desensitizes rapidly and enters a transient inactive state, characterized by the presence of bound agonist. In the presence of CACNG4 or CACNG7 or CACNG8, shows resensitization which is characterized by a delayed accumulation of current flux upon continued application of glutamate.<ref>PMID:9351977</ref> <ref>PMID:19265014</ref> <ref>PMID:21172611</ref> <ref>PMID:12501192</ref> <ref>PMID:12015593</ref> <ref>PMID:12872125</ref> <ref>PMID:12730367</ref> <ref>PMID:16192394</ref> <ref>PMID:15591246</ref> <ref>PMID:17018279</ref> <ref>PMID:16483599</ref> <ref>PMID:19946266</ref> <ref>PMID:21317873</ref> <ref>PMID:21846932</ref>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ft/1ftl_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1ftl ConSurf].
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<div style="clear:both"></div>
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==About this Structure==
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==See Also==
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1FTL is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus] with SO4 and DNQ as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1FTL OCA].
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*[[Glutamate receptor 3D structures|Glutamate receptor 3D structures]]
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== References ==
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==Reference==
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<references/>
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Mechanisms for activation and antagonism of an AMPA-sensitive glutamate receptor: crystal structures of the GluR2 ligand binding core., Armstrong N, Gouaux E, Neuron. 2000 Oct;28(1):165-81. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=11086992 11086992]
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
[[Category: Rattus norvegicus]]
[[Category: Rattus norvegicus]]
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[[Category: Single protein]]
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[[Category: Armstrong N]]
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[[Category: Armstrong, N.]]
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[[Category: Gouaux E]]
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[[Category: Gouaux, E.]]
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[[Category: DNQ]]
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[[Category: SO4]]
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[[Category: antagonist]]
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[[Category: dnqx]]
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[[Category: glutamate receptor]]
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[[Category: ligand binding core]]
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[[Category: s1s2]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Tue Nov 20 15:16:04 2007''
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Current revision

CRYSTAL STRUCTURE OF THE GLUR2 LIGAND BINDING CORE (S1S2J) IN COMPLEX WITH THE ANTAGONIST DNQX AT 1.8 A RESOLUTION

PDB ID 1ftl

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