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PDBsum entry 4x48

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protein ligands metals Protein-protein interface(s) links
Membrane protein PDB id
4x48

 

 

 

 

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Contents
Protein chains
258 a.a.
Ligands
GLU ×3
XPF ×2
Metals
_ZN ×5
Waters ×702
PDB id:
4x48
Name: Membrane protein
Title: Crystal structure of glur2 ligand-binding core
Structure: Glutamate receptor 2. Chain: a, b, c. Fragment: ligand binding domain, engineered single chain. Synonym: glur-2,ampa-selective glutamate receptor 2,glur-b,glur-k2, glutamate receptor ionotropic,ampa 2,glua2,glur-2,ampa-selective glutamate receptor 2,glur-b,glur-k2,glutamate receptor ionotropic, ampa 2,glua2. Engineered: yes
Source: Rattus norvegicus. Rat. Organism_taxid: 10116. Gene: gria2, glur2. Expressed in: escherichia coli. Expression_system_taxid: 562
Resolution:
1.89Å     R-factor:   0.175     R-free:   0.197
Authors: J.Pandit
Key ref: C.L.Shaffer et al. (2015). The discovery and characterization of the α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor potentiator N-{(3S,4S)-4-[4-(5-cyano-2-thienyl)phenoxy]tetrahydrofuran-3-yl}propane-2-sulfonamide (PF-04958242). J Med Chem, 58, 4291-4308. PubMed id: 25905800 DOI: 10.1021/acs.jmedchem.5b00300
Date:
02-Dec-14     Release date:   06-May-15    
PROCHECK
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 Headers
 References

Protein chains
Pfam   ArchSchema ?
P19491  (GRIA2_RAT) -  Glutamate receptor 2 from Rattus norvegicus
Seq:
Struc:
 
Seq:
Struc:
883 a.a.
258 a.a.*
Key:    PfamA domain  Secondary structure  CATH domain
* PDB and UniProt seqs differ at 2 residue positions (black crosses)

 

 
DOI no: 10.1021/acs.jmedchem.5b00300 J Med Chem 58:4291-4308 (2015)
PubMed id: 25905800  
 
 
The discovery and characterization of the α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor potentiator N-{(3S,4S)-4-[4-(5-cyano-2-thienyl)phenoxy]tetrahydrofuran-3-yl}propane-2-sulfonamide (PF-04958242).
C.L.Shaffer, N.C.Patel, J.Schwarz, R.J.Scialis, Y.Wei, X.J.Hou, L.Xie, K.Karki, D.K.Bryce, S.M.Osgood, W.E.Hoffmann, J.T.Lazzaro, C.Chang, D.F.McGinnis, S.M.Lotarski, J.Liu, R.S.Obach, M.L.Weber, L.Chen, K.R.Zasadny, P.A.Seymour, C.J.Schmidt, M.Hajós, R.S.Hurst, J.Pandit, C.J.O'Donnell.
 
  ABSTRACT  
 
A unique tetrahydrofuran ether class of highly potent α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor potentiators has been identified using rational and structure-based drug design. An acyclic lead compound, containing an ether-linked isopropylsulfonamide and biphenyl group, was pharmacologically augmented by converting it to a conformationally constrained tetrahydrofuran to improve key interactions with the human GluA2 ligand-binding domain. Subsequent replacement of the distal phenyl motif with 2-cyanothiophene to enhance its potency, selectivity, and metabolic stability afforded N-{(3S,4S)-4-[4-(5-cyano-2-thienyl)phenoxy]tetrahydrofuran-3-yl}propane-2-sulfonamide (PF-04958242, 3), whose preclinical characterization suggests an adequate therapeutic index, aided by low projected human oral pharmacokinetic variability, for clinical studies exploring its ability to attenuate cognitive deficits in patients with schizophrenia.
 

 

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