ISDA

Entry Detail

PDB ID:

2XX9

Keywords:

Title:

Crystal structure of 1-((2-fluoro-4-(3-(trifluoromethyl)-4,5,6,7- tetrahydro-1H-indazol-1-yl)phenyl)methyl)-2-pyrrolidinone in complex with the ligand binding domain of the Rat GluA2 receptor and glutamate at 2.2A resolution.

Biological Source:

Source Organism:

RATTUS NORVEGICUS

Host Organism:

ESCHERICHIA COLI

PDB Version:

Deposition Date:

2010-11-09

Release Date:

2011-04-06

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.97 Å

R-Value Free:

0.22

R-Value Work:

0.18

R-Value Observed:

0.18

Space Group:

P 21 21 2

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:GLUTAMATE RECEPTOR 2
Mutations:YES
Chain IDs:A, B, C
Chain Length:263
Number of Molecules:3
Biological Source:RATTUS NORVEGICUS

UniProt ID:P19491 Pfam ID:PF10613, PF00060

Ligand Molecules

1NF

GLU

SO4

Primary Citation

Integration of Lead Optimization with Crystallography for a Membrane-Bound Ion Channel Target: Discovery of a New Class of Ampa Receptor Positive Allosteric Modulators.

Ward, S.E, Harries, M, Aldegheri, L, Austin, N.E, Ballantine, S, Ballini, E, Bradley, D.M, Bax, B.D, Clarke, B.P, Harris, A.J, Harrison, S.A, Melarange, R.A, Mookherjee, C, Mosley, J, Dal Negro, G, Oliosi, B, Smith, K.J, Thewlis, K.M, Woollard, P.M, Yusaf, S.P.Show

J.Med.Chem. 54 78 ? (2011)

PMID: 21128618 DOI: 10.1021/JM100679E

Abstact

A novel series of AMPAR positive modulators is described that were identified by high throughput screening. The molecules of the series have been optimized from a high quality starting point hit to afford excellent developability, tolerability, and efficacy profiles, leading to identification of a clinical candidate. Unusually for an ion channel target, this optimization was integrated with regular generation of ligand-bound crystal structures and uncovered a novel chemotype with a unique and highly conserved mode of interaction via a trifluoromethyl group.

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Primary Citation of related structures