3BFU image
Entry Detail
PDB ID:
3BFU
Title:
Structure of the ligand-binding core of GluR2 in complex with the agonist (R)-TDPA at 1.95 A resolution
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2007-11-23
Release Date:
2008-10-14
Method Details:
Experimental Method:
Resolution:
1.95 Å
R-Value Free:
0.23
R-Value Work:
0.20
Space Group:
P 1 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Glutamate receptor 2
Chain IDs:A, B, C, D
Chain Length:263
Number of Molecules:4
Biological Source:Rattus norvegicus
Ligand Molecules
Primary Citation
Structures of the ligand-binding core of iGluR2 in complex with the agonists (R)- and (S)-2-amino-3-(4-hydroxy-1,2,5-thiadiazol-3-yl)propionic acid explain their unusual equipotency.
J.Med.Chem. 51 1459 1463 (2008)
PMID: 18269227 DOI: 10.1021/jm701126w

Abstact

AMPA-type ionotropic glutamate receptors generally display high stereoselectivity in agonist binding. However, the stereoisomers of 2-amino-3-(4-hydroxy-1,2,5-thiadiazol-3-yl)propionic acid (TDPA) have similar enantiopharmacology. To understand this observation, we have determined the X-ray structures of (R)-TDPA and (S)-TDPA in complex with the ligand-binding core of iGluR2 and investigated the binding pharmacology at AMPA and kainate receptors. Both enantiomers induce full domain closure in iGluR2 but adopt different conformations when binding to the receptor, which may explain the similar enantiopharmacology.

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Primary Citation of related structures