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| | ==Crystal structure of GluN1/GluN2A ligand-binding domain in complex with DCKA and glutamate== | | ==Crystal structure of GluN1/GluN2A ligand-binding domain in complex with DCKA and glutamate== |
| - | <StructureSection load='4nf4' size='340' side='right' caption='[[4nf4]], [[Resolution|resolution]] 2.00Å' scene=''> | + | <StructureSection load='4nf4' size='340' side='right'caption='[[4nf4]], [[Resolution|resolution]] 2.00Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4nf4]] is a 2 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=4NF4 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4NF4 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4nf4]] 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=4NF4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4NF4 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=2JK:4-HYDROXY-5,7-DIMETHYLQUINOLINE-2-CARBOXYLIC+ACID'>2JK</scene>, <scene name='pdbligand=GLU:GLUTAMIC+ACID'>GLU</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=2JK:4-HYDROXY-5,7-DIMETHYLQUINOLINE-2-CARBOXYLIC+ACID'>2JK</scene>, <scene name='pdbligand=GLU:GLUTAMIC+ACID'>GLU</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4nf5|4nf5]], [[4nf6|4nf6]], [[4nf8|4nf8]]</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=4nf4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4nf4 OCA], [https://pdbe.org/4nf4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4nf4 RCSB], [https://www.ebi.ac.uk/pdbsum/4nf4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4nf4 ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Grin1, Nmdar1, rat GluN1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10116 Buffalo rat]), Grin2a ([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=4nf4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4nf4 OCA], [http://pdbe.org/4nf4 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4nf4 RCSB], [http://www.ebi.ac.uk/pdbsum/4nf4 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4nf4 ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/NMDZ1_RAT NMDZ1_RAT]] NMDA receptor subtype of glutamate-gated ion channels possesses high calcium permeability and voltage-dependent sensitivity to magnesium. Mediated by glycine. Plays a key role in synaptic plasticity, synaptogenesis, excitotoxicity, memory acquisition and learning. It mediates neuronal functions in glutamate neurotransmission. Is involved in the cell surface targeting of NMDA receptors.<ref>PMID:15996549</ref> [[http://www.uniprot.org/uniprot/NMDE1_RAT NMDE1_RAT]] NMDA receptor subtype of glutamate-gated ion channels possesses high calcium permeability and voltage-dependent sensitivity to magnesium. Activation requires binding of agonist to both types of subunits. | + | [https://www.uniprot.org/uniprot/NMDZ1_RAT NMDZ1_RAT] NMDA receptor subtype of glutamate-gated ion channels possesses high calcium permeability and voltage-dependent sensitivity to magnesium. Mediated by glycine. Plays a key role in synaptic plasticity, synaptogenesis, excitotoxicity, memory acquisition and learning. It mediates neuronal functions in glutamate neurotransmission. Is involved in the cell surface targeting of NMDA receptors.<ref>PMID:15996549</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | </div> | | </div> |
| | <div class="pdbe-citations 4nf4" style="background-color:#fffaf0;"></div> | | <div class="pdbe-citations 4nf4" style="background-color:#fffaf0;"></div> |
| | + | |
| | + | ==See Also== |
| | + | *[[Glutamate receptor 3D structures|Glutamate receptor 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Buffalo rat]] | + | [[Category: Large Structures]] |
| - | [[Category: Annie, J]] | + | [[Category: Rattus norvegicus]] |
| - | [[Category: Furukawa, H]] | + | [[Category: Annie J]] |
| - | [[Category: Tajima, N]] | + | [[Category: Furukawa H]] |
| - | [[Category: Dcka and glutamate]] | + | [[Category: Tajima N]] |
| - | [[Category: Receptor]]
| + | |
| - | [[Category: Transport protein]]
| + | |
| Structural highlights
Function
NMDZ1_RAT NMDA receptor subtype of glutamate-gated ion channels possesses high calcium permeability and voltage-dependent sensitivity to magnesium. Mediated by glycine. Plays a key role in synaptic plasticity, synaptogenesis, excitotoxicity, memory acquisition and learning. It mediates neuronal functions in glutamate neurotransmission. Is involved in the cell surface targeting of NMDA receptors.[1]
Publication Abstract from PubMed
There has been a great level of enthusiasm to downregulate overactive N-methyl-D-aspartate (NMDA) receptors to protect neurons from excitotoxicity. NMDA receptors play pivotal roles in basic brain development and functions as well as in neurological disorders and diseases. However, mechanistic understanding of antagonism in NMDA receptors is limited due to complete lack of antagonist-bound structures for the L-glutamate-binding GluN2 subunits. Here, we report the crystal structures of GluN1/GluN2A NMDA receptor ligand-binding domain (LBD) heterodimers in complex with GluN1- and GluN2-targeting antagonists. The crystal structures reveal that the antagonists, D-(-)-2-amino-5-phosphonopentanoic acid (D-AP5) and 1-(phenanthrene-2-carbonyl)piperazine-2,3-dicarboxylic acid (PPDA), have discrete binding modes and mechanisms for opening of the bilobed architecture of GluN2A LBD compared to the agonist-bound form. The current study shows distinct ways by which the conformations of NMDA receptor LBDs may be controlled and coupled to receptor inhibition and provides possible strategies to develop therapeutic compounds with higher subtype-specificity.
Structural insights into competitive antagonism in NMDA receptors.,Jespersen A, Tajima N, Fernandez-Cuervo G, Garnier-Amblard EC, Furukawa H Neuron. 2014 Jan 22;81(2):366-78. doi: 10.1016/j.neuron.2013.11.033. PMID:24462099[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Inanobe A, Furukawa H, Gouaux E. Mechanism of partial agonist action at the NR1 subunit of NMDA receptors. Neuron. 2005 Jul 7;47(1):71-84. PMID:15996549 doi:10.1016/j.neuron.2005.05.022
- ↑ Jespersen A, Tajima N, Fernandez-Cuervo G, Garnier-Amblard EC, Furukawa H. Structural insights into competitive antagonism in NMDA receptors. Neuron. 2014 Jan 22;81(2):366-78. doi: 10.1016/j.neuron.2013.11.033. PMID:24462099 doi:http://dx.doi.org/10.1016/j.neuron.2013.11.033
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