1YC1

Crystal Structures of human HSP90alpha complexed with dihydroxyphenylpyrazoles


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.190 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structures of human HSP90alpha-complexed with dihydroxyphenylpyrazoles.

Kreusch, A.Han, S.Brinker, A.Zhou, V.Choi, H.S.He, Y.Lesley, S.A.Caldwell, J.Gu, X.J.

(2005) Bioorg.Med.Chem.Lett. 15: 1475-1478

  • DOI: 10.1016/j.bmcl.2004.12.087
  • Primary Citation of Related Structures:  1YC3, 1YC4

  • PubMed Abstract: 
  • A series of dihydroxyphenylpyrazole compounds were identified as a unique class of reversible Hsp90 inhibitors. The crystal structures for two of the identified compounds complexed with the N-terminal ATP binding domain of human Hsp90alpha were deter ...

    A series of dihydroxyphenylpyrazole compounds were identified as a unique class of reversible Hsp90 inhibitors. The crystal structures for two of the identified compounds complexed with the N-terminal ATP binding domain of human Hsp90alpha were determined. The dihydroxyphenyl ring of the compounds fits deeply into the adenine binding pocket with the C2 hydroxyl group forming a direct hydrogen bond with the side chain of Asp93. The pyrazole ring forms hydrogen bonds to the backbone carbonyl of Gly97, the hydroxyl group of Thr184 and to a water molecule, which is present in all of the published HSP90 structures. One of the identified compounds (G3130) demonstrated cellular activities (in Her-2 degradation and activation of Hsp70 promoter) consistent with the inhibition of cellular Hsp90 functions.


    Organizational Affiliation

    Genomics Institute of the Novartis Research Foundation (GNF), 10675 John Jay Hopkins Drive, San Diego, CA 92121, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Heat shock protein HSP 90-alpha
A
264Homo sapiensGene 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
4BC
Query on 4BC

Download SDF File 
Download CCD File 
A
4-(1,3-BENZODIOXOL-5-YL)-5-(5-ETHYL-2,4-DIHYDROXYPHENYL)-2H-PYRAZOLE-3-CARBOXYLIC ACID
C19 H16 N2 O6
LCTWZJKHOGKNMX-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
4BCKd: 680 nM (91) BINDINGDB
4BCKd: 680 nM BINDINGMOAD
4BCKd: 680 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.190 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 71.611α = 90.00
b = 89.000β = 90.00
c = 88.386γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
HKL-2000data reduction
AMoREphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-02-22
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance