4EGK

Human Hsp90-alpha ATPase domain bound to Radicicol


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.69 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.201 

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:  

  • 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 competi ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Heat shock protein HSP 90-alpha
A
232Homo sapiensMutation(s): 0 
Gene Names: HSP90AA1 (HSP90A, HSPC1, HSPCA)
Find proteins for P07900 (Homo sapiens)
Go to Gene View: HSP90AA1
Go to UniProtKB:  P07900
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
RDC
Query on RDC

Download SDF File 
Download CCD File 
A
RADICICOL
MONORDEN
C18 H17 Cl O6
WYZWZEOGROVVHK-GTMNPGAYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
RDCIC50: 150 nM (92) BINDINGDB
RDCIC50: 40 nM BINDINGMOAD
RDCKd: 19 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.69 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.201 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 52.440α = 90.00
b = 43.880β = 113.81
c = 53.640γ = 90.00
Software Package:
Software NamePurpose
PROTEUM2data collection
REFMACrefinement
PROTEUM2data reduction
PROTEUM2data scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



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
    Type: Database references