ISDA

Deposition Date 2003-01-14

Release Date 2003-03-11

Last Version Date 2024-11-20

Entry Detail

PDB ID:

1NNP

Keywords:

MEMBRANE PROTEIN

Title:

X-ray structure of the GluR2 ligand-binding core (S1S2J) in complex with (S)-ATPA at 1.9 A resolution. Crystallization without zinc ions.

Biological Source:

Source Organism:

Rattus norvegicus (Taxon ID: 10116)

Host Organism:

Escherichia coli BL21(DE3)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.90 Å

R-Value Free:

0.21

R-Value Work:

0.19

Space Group:

P 21 21 2

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Glutamate receptor 2
Gene (Uniprot):Gria2
Chain IDs:A, B
Chain Length:263
Number of Molecules:2
Biological Source:Rattus norvegicus

UniProt ID:P19491 Pfam ID:PF10613, PF00060

Ligand Molecules

CE2

SO4

Primary Citation

Three-Dimensional Structure of the Ligand-Binding Core of GluR2 in Complex with the Agonist (S)-ATPA: Implications for Receptor Subunit Selectivity.

Lunn, M.L, Hogner, A, Stensbol, T.B, Gouaux, E, Egebjerg, J, Kastrup, J.S, Hogner, A, Kastrup, J.S, Jin, R, Liljefors, T, Mayer, M.L, Egebjerg, J, Larsen, I, Gouaux, E, Armstrong, N, Gouaux, E, Sun, Y, Olson, R, Horning, M, Armstrong, N, Mayer, M, Gouaux, E, Chen, G.Q, Sun, R, Jin, R, Gouaux, E.Show

J.Med.Chem. 46 872 875 (2003)

PMID: 12593667 DOI: 10.1021/jm021020+

Abstact

Two X-ray structures of the GluR2 ligand-binding core in complex with (S)-2-amino-3-(5-tert-butyl-3-hydroxy-4-isoxazolyl)propionic acid ((S)-ATPA) have been determined with and without Zn(2+) ions. (S)-ATPA induces a domain closure of ca. 21 degrees compared to the apo form. The tert-butyl moiety of (S)-ATPA is buried in a partially hydrophobic pocket and forces the ligand into the glutamate-like binding mode. The structures provide new insight into the molecular basis of agonist selectivity between AMPA and kainate receptors.

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