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5vii

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Revision as of 09:34, 1 January 2020

Crystal structure of GluN1/GluN2A NMDA receptor agonist binding domains with glycine and antagonist, 4-(3-fluoropropyl)phenyl-ACEPC

Structural highlights

5vii is a 2 chain structure with sequence from Buffalo rat. This structure supersedes the now removed PDB entry 5ddx. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, , ,
Related:	5vij, 5vih
Gene:	Grin1, Nmdar1 (Buffalo rat), Grin2a (Buffalo rat)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

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] [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.

Publication Abstract from PubMed

NMDA-type glutamate receptors are ligand-gated ion channels that contribute to excitatory neurotransmission in the central nervous system (CNS). Most NMDA receptors comprise two glycine-binding GluN1 and two glutamate-binding GluN2 subunits (GluN2A-D). We describe highly potent (S)-5-[(R)-2-amino-2-carboxyethyl]-4,5-dihydro-1H-pyrazole-3-carboxylic acid (ACEPC) competitive GluN2 antagonists, of which ST3 has a binding affinity of 52 nM at GluN1/2A and 782 nM at GluN1/2B receptors. This 15-fold preference of ST3 for GluN1/2A over GluN1/2B is improved compared with NVP-AAM077, a widely used GluN2A-selective antagonist, which we show has 11-fold preference for GluN1/2A over GluN1/2B. Crystal structures of the GluN1/2A agonist binding domain (ABD) heterodimer with bound ACEPC antagonists reveal a binding mode in which the ligands occupy a cavity that extends toward the subunit interface between GluN1 and GluN2A ABDs. Mutational analyses show that the GluN2A preference of ST3 is primarily mediated by four nonconserved residues that are not directly contacting the ligand, but positioned within 12 A of the glutamate binding site. Two of these residues influence the cavity occupied by ST3 in a manner that results in favorable binding to GluN2A, but occludes binding to GluN2B. Thus, we reveal opportunities for the design of subunit-selective competitive NMDA receptor antagonists by identifying a cavity for ligand binding in which variations exist between GluN2A and GluN2B subunits. This structural insight suggests that subunit selectivity of glutamate-site antagonists can be mediated by mechanisms in addition to direct contributions of contact residues to binding affinity.

Structural basis of subunit selectivity for competitive NMDA receptor antagonists with preference for GluN2A over GluN2B subunits.,Lind GE, Mou TC, Tamborini L, Pomper MG, De Micheli C, Conti P, Pinto A, Hansen KB Proc Natl Acad Sci U S A. 2017 Aug 15;114(33):E6942-E6951. doi:, 10.1073/pnas.1707752114. Epub 2017 Jul 31. PMID:28760974^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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
↑ Lind GE, Mou TC, Tamborini L, Pomper MG, De Micheli C, Conti P, Pinto A, Hansen KB. Structural basis of subunit selectivity for competitive NMDA receptor antagonists with preference for GluN2A over GluN2B subunits. Proc Natl Acad Sci U S A. 2017 Aug 15;114(33):E6942-E6951. doi:, 10.1073/pnas.1707752114. Epub 2017 Jul 31. PMID:28760974 doi:http://dx.doi.org/10.1073/pnas.1707752114

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/5vii"

@@ Line 1: / Line 1: @@
 ==Crystal structure of GluN1/GluN2A NMDA receptor agonist binding domains with glycine and antagonist, 4-(3-fluoropropyl)phenyl-ACEPC==
-<StructureSection load='5vii' size='340' side='right' caption='[[5vii]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
+<StructureSection load='5vii' size='340' side='right'caption='[[5vii]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5vii]] is a 2 chain structure. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=5ddx 5ddx]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5VII OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5VII FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5vii]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Buffalo_rat Buffalo rat]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=5ddx 5ddx]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5VII OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5VII FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=5DY:5-[(2R)-2-AMINO-2-CARBOXYETHYL]-1-[4-(3-FLUOROPROPYL)PHENYL]-1H-PYRAZOLE-3-CARBOXYLIC+ACID'>5DY</scene>, <scene name='pdbligand=GLY:GLYCINE'>GLY</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5vij|5vij]], [[5vih|5vih]]</td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Grin1, Nmdar1 ([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=5vii FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5vii OCA], [http://pdbe.org/5vii PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5vii RCSB], [http://www.ebi.ac.uk/pdbsum/5vii PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5vii ProSAT]</span></td></tr>
 </table>
@@ Line 19: / Line 20: @@
 </div>
 <div class="pdbe-citations 5vii" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Glutamate receptor 3D structures|Glutamate receptor 3D structures]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
+[[Category: Buffalo rat]]
+[[Category: Large Structures]]
 [[Category: Conti, P]]
 [[Category: Hansen, K B]]

5vii

From Proteopedia

Revision as of 09:34, 1 January 2020

Crystal structure of GluN1/GluN2A NMDA receptor agonist binding domains with glycine and antagonist, 4-(3-fluoropropyl)phenyl-ACEPC

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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