ISDA

Entry Detail

PDB ID:

1MQD

Keywords:

Title:

X-ray structure of the GluR2 ligand-binding core (S1S2J) in complex with (S)-Des-Me-AMPA at 1.46 A resolution. Crystallization in the presence of lithium sulfate.

Biological Source:

Source Organism:

Rattus norvegicus

Host Organism:

Escherichia coli BL21(DE3)

PDB Version:

Deposition Date:

2002-09-16

Release Date:

2003-07-01

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.46 Å

R-Value Free:

0.19

R-Value Work:

0.18

Space Group:

P 1 2 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Glutamate receptor subunit 2
Chain IDs:A, B, C, D
Chain Length:261
Number of Molecules:4
Biological Source:Rattus norvegicus

UniProt ID:P19491 Pfam ID:PF10613, PF00060

Ligand Molecules

GOL

SHI

SO4

Primary Citation

GluR2 ligand-binding core complexes: Importance of the isoxazolol moiety and 5-substituent for the binding mode of AMPA-type agonists.

Kasper, C, Lunn, M.L, Liljefors, T, Gouaux, E, Egebjerg, J, Kastrup, J.S, Hogner, A, Kastrup, J, Jin, R, Liljefors, T, Mayer, M, 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, Y, Jin, R, Gouaux, E.Show

FEBS Lett. 531 173 178 (2002)

PMID: 12417307 DOI: 10.1016/S0014-5793(02)03496-8

Abstact

X-ray structures of the GluR2 ligand-binding core in complex with (S)-Des-Me-AMPA and in the presence and absence of zinc ions have been determined. (S)-Des-Me-AMPA, which is devoid of a substituent in the 5-position of the isoxazolol ring, only has limited interactions with the partly hydrophobic pocket of the ligand-binding site, and adopts an AMPA-like binding mode. The structures, in comparison with other agonist complex structures, disclose the relative importance of the isoxazolol ring and of the substituent in the 5-position for the mode of binding. A relationship appears to exist between the extent of interaction of the ligand with the hydrophobic pocket and the affinity of the ligand.

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Primary Citation of related structures