ISDA

Entry Detail

PDB ID:

5FHM

Keywords:

Title:

Crystal structure of the GluA2 ligand-binding domain (S1S2J) in complex with (S)-2-Amino-3-(5-(2-(3-(aminomethyl)benzyl)-2H-tetrazol-5-yl)-3-hydroxyisoxazol-4-yl)propanoic acid at resolution 1.55 A resolution

Biological Source:

Source Organism:

Rattus norvegicus

Host Organism:

Escherichia coli BL21(DE3)

PDB Version:

Deposition Date:

2015-12-22

Release Date:

2016-03-02

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.55 Å

R-Value Free:

0.15

R-Value Work:

0.13

R-Value Observed:

0.13

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Glutamate receptor 2,Glutamate receptor 2
Chain IDs:A, B
Chain Length:264
Number of Molecules:2
Biological Source:Rattus norvegicus

UniProt ID:P19491 Pfam ID:PF10613, PF00060

Ligand Molecules

5XP

ACT

EDO

GOL

SO4

Primary Citation

Tweaking Subtype Selectivity and Agonist Efficacy at (S)-2-Amino-3-(3-hydroxy-5-methyl-isoxazol-4-yl)propionic acid (AMPA) Receptors in a Small Series of BnTetAMPA Analogues.

Wang, S.Y, Larsen, Y, Navarrete, C.V, Jensen, A.A, Nielsen, B, Al-Musaed, A, Frydenvang, K, Kastrup, J.S, Pickering, D.S, Clausen, R.P, Vogensen, S.B, Frydenvang, K, Greenwood, J.R, Postorino, G, Nielsen, B, Pickering, D.S, Ebert, B, Bolcho, U, Egebjerg, J, Gajhede, M, Kastrup, J.S, Johansen, T.N, Clausen, R.P, Krogsgaard-Larsen, P.Show

J.Med.Chem. 59 2244 2254 (2016)

PMID: 26862980 DOI: 10.1021/acs.jmedchem.5b01982

Abstact

A series of analogues of the (S)-2-Amino-3-(3-hydroxy-5-methyl-isoxazol-4-yl)propionic acid (AMPA) receptor agonist BnTetAMPA (5b) were synthesized and characterized pharmacologically in radioligand binding assays at native and cloned AMPA receptors and functionally by two-electrode voltage clamp electrophysiology at the four homomeric AMPA receptors expressed in Xenopus laevis oocytes. The analogues 6 and 7 exhibit very different pharmacological profiles with binding affinity preference for the subtypes GluA1 and GluA3, respectively. X-ray crystal structures of three ligands (6, 7, and 8) in complex with the agonist binding domain (ABD) of GluA2 show that they induce full domain closure despite their low agonist efficacies. Trp767 in GluA2 ABD could be an important determinant for partial agonism of this compound series at AMPA receptors, since agonist efficacy also correlated with the location of the Trp767 side chain.

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