4EGI

Hsp90-alpha ATPase domain in complex with 2-Amino-4-ethylthio-6-methyl-1,3,5-triazine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.79 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.204 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Fragment screening using capillary electrophoresis (CEfrag) for hit identification of heat shock protein 90 ATPase inhibitors.

Austin, C.Pettit, S.N.Magnolo, S.K.Sanvoisin, J.Chen, W.Wood, S.P.Freeman, L.D.Pengelly, R.J.Hughes, D.E.

(2012) J Biomol Screen 17: 868-876

  • DOI: 10.1177/1087057112445785
  • Primary Citation of Related Structures:  
    4EGH, 4EGI, 4EGK

  • PubMed Abstract: 
  • CEfrag is a new fragment screening technology based on affinity capillary electrophoresis (ACE). Here we report on the development of a mobility shift competition assay using full-length human heat shock protein 90α (Hsp90α), radicicol as the competitor probe ligand, and successful screening of the Selcia fragment library ...

    CEfrag is a new fragment screening technology based on affinity capillary electrophoresis (ACE). Here we report on the development of a mobility shift competition assay using full-length human heat shock protein 90α (Hsp90α), radicicol as the competitor probe ligand, and successful screening of the Selcia fragment library. The CEfrag assay was able to detect weaker affinity (IC(50) >500 µM) fragments than were detected by a fluorescence polarization competition assay using FITC-labeled geldanamycin. The binding site of selected fragments was determined by co-crystallization with recombinant Hsp90α N-terminal domain and X-ray analysis. The results of this study confirm that CEfrag is a sensitive microscale technique enabling detection of fragments binding to the biological target in near-physiological solution.


    Organizational Affiliation

    Discovery, Selcia Ltd, Fyfield Business and Research Park, Ongar, UK. carol.austin@selcia.com



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Heat shock protein HSP 90-alphaA232Homo sapiensMutation(s): 0 
Gene Names: HSP90AA1HSP90AHSPC1HSPCA
Find proteins for P07900 (Homo sapiens)
Explore P07900 
Go to UniProtKB:  P07900
NIH Common Fund Data Resources
PHAROS  P07900
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
B2J
Query on B2J

Download CCD File 
A
4-(ethylsulfanyl)-6-methyl-1,3,5-triazin-2-amine
C6 H10 N4 S
PJQMCVIFTDRXNT-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
B2JIC50 :  150000   nM  PDBBind
B2JKd:  42000   nM  BindingDB
B2JIC50:  150000   nM  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.79 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.204 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.5α = 90
b = 43.82β = 113.87
c = 53.81γ = 90
Software Package:
Software NamePurpose
PROTEUM2data collection
PHASERphasing
REFMACrefinement
PROTEUM2data reduction
PROTEUM2data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2012-03-31 
  • Released Date: 2012-05-23 
  • Deposition Author(s): Chen, W.J., Wood, S.P.

Revision History 

  • Version 1.0: 2012-05-23
    Type: Initial release
  • Version 1.1: 2012-10-17
    Changes: Database references