1BGQ

RADICICOL BOUND TO THE ATP BINDING SITE OF THE N-TERMINAL DOMAIN OF THE YEAST HSP90 CHAPERONE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.200 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.4 of the entry. See complete history


Literature

Structural basis for inhibition of the Hsp90 molecular chaperone by the antitumor antibiotics radicicol and geldanamycin.

Roe, S.M.Prodromou, C.O'Brien, R.Ladbury, J.E.Piper, P.W.Pearl, L.H.

(1999) J Med Chem 42: 260-266

  • DOI: https://doi.org/10.1021/jm980403y
  • Primary Citation of Related Structures:  
    1BGQ

  • PubMed Abstract: 

    The cellular activity of several regulatory and signal transduction proteins, which depend on the Hsp90 molecular chaperone for folding, is markedly decreased by geldanamycin and by radicicol (monorden). We now show that these unrelated compounds both bind to the N-terminal ATP/ADP-binding domain of Hsp90, with radicicol displaying nanomolar affinity, and both inhibit the inherent ATPase activity of Hsp90 which is essential for its function in vivo. Crystal structure determinations of Hsp90 N-terminal domain complexes with geldanamycin and radicicol identify key aspects of their nucleotide mimicry and suggest a rational basis for the design of novel antichaperone drugs.


  • Organizational Affiliation

    Department of Biochemistry and Molecular Biology, University College London, Gower Street, London WC1E 6BT, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HEAT SHOCK PROTEIN 90225Saccharomyces cerevisiaeMutation(s): 0 
UniProt
Find proteins for P02829 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P02829 
Go to UniProtKB:  P02829
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02829
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
RDC
Query on RDC

Download Ideal Coordinates CCD File 
B [auth A]RADICICOL
C18 H17 Cl O6
WYZWZEOGROVVHK-GTMNPGAYSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
RDC PDBBind:  1BGQ Kd: 2.7 (nM) from 1 assay(s)
BindingDB:  1BGQ IC50: min: 30, max: 200 (nM) from 4 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.200 
  • Space Group: P 43 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 73.94α = 90
b = 73.94β = 90
c = 110.86γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
MOSFLMdata reduction
CCP4data scaling
X-PLORphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1999-06-08
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-08-02
    Changes: Database references, Derived calculations, Other, Refinement description
  • Version 1.4: 2024-05-22
    Changes: Data collection