4FAT

Ligand-binding domain of GluA2 (flip) ionotropic glutamate receptor in complex with an allosteric modulator


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.4 of the entry. See complete history


Literature

Functional analysis of a novel positive allosteric modulator of AMPA receptors derived from a structure-based drug design strategy.

Harms, J.E.Benveniste, M.Maclean, J.K.Partin, K.M.Jamieson, C.

(2013) Neuropharmacology 64: 45-52

  • DOI: https://doi.org/10.1016/j.neuropharm.2012.06.008
  • Primary Citation of Related Structures:  
    4FAT

  • PubMed Abstract: 

    Positive allosteric modulators of α-amino-3-hydroxy-5-methyl-isoxazole-propionic acid (AMPA) receptors facilitate synaptic plasticity and can improve various forms of learning and memory. These modulators show promise as therapeutic agents for the treatment of neurological disorders such as schizophrenia, ADHD, and mental depression. Three classes of positive modulator, the benzamides, the thiadiazides, and the biarylsulfonamides differentially occupy a solvent accessible binding pocket at the interface between the two subunits that form the AMPA receptor ligand-binding pocket. Here, we describe the electrophysiological properties of a new chemotype derived from a structure-based drug design strategy (SBDD), which makes similar receptor interactions compared to previously reported classes of modulator. This pyrazole amide derivative, JAMI1001A, with a promising developability profile, efficaciously modulates AMPA receptor deactivation and desensitization of both flip and flop receptor isoforms. This article is part of a Special Issue entitled 'Cognitive Enhancers'.


  • Organizational Affiliation

    Department of Biomedical Sciences, Colorado State University, Fort Collins, CO 80523-1617, USA. jonathan.harms@colostate.edu


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glutamate receptor 2263Rattus norvegicusMutation(s): 0 
Gene Names: Gria2Glur2
UniProt
Find proteins for P19491 (Rattus norvegicus)
Explore P19491 
Go to UniProtKB:  P19491
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP19491
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
496
Query on 496

Download Ideal Coordinates CCD File 
C [auth A]2-({[4-(hydroxymethyl)-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetyl}amino)-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide
C16 H17 F3 N4 O3 S
ZGRBZBGNPZBNLW-UHFFFAOYSA-N
GLU
Query on GLU

Download Ideal Coordinates CCD File 
B [auth A]GLUTAMIC ACID
C5 H9 N O4
WHUUTDBJXJRKMK-VKHMYHEASA-N
SO4
Query on SO4

Download Ideal Coordinates CCD File 
D [auth A],
E [auth A],
F [auth A]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL
Query on GOL

Download Ideal Coordinates CCD File 
G [auth A],
H [auth A],
I [auth A],
J [auth A]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
LI
Query on LI

Download Ideal Coordinates CCD File 
K [auth A]LITHIUM ION
Li
HBBGRARXTFLTSG-UHFFFAOYSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
496 BindingDB:  4FAT EC50: 398.11 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.866α = 90
b = 88.143β = 90
c = 47.391γ = 90
Software Package:
Software NamePurpose
AMoREphasing
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-07-11
    Type: Initial release
  • Version 1.1: 2012-10-03
    Changes: Database references
  • Version 1.2: 2017-08-02
    Changes: Advisory, Refinement description, Source and taxonomy
  • Version 1.3: 2017-11-15
    Changes: Refinement description
  • Version 1.4: 2023-09-13
    Changes: Advisory, Data collection, Database references, Derived calculations, Refinement description