3BM9

Discovery of Benzisoxazoles as Potent Inhibitors of Chaperone Hsp90


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.186 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.165 

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This is version 1.1 of the entry. See complete history


Literature

Discovery of benzisoxazoles as potent inhibitors of chaperone heat shock protein 90.

Gopalsamy, A.Shi, M.Golas, J.Vogan, E.Jacob, J.Johnson, M.Lee, F.Nilakantan, R.Petersen, R.Svenson, K.Chopra, R.Tam, M.S.Wen, Y.Ellingboe, J.Arndt, K.Boschelli, F.

(2008) J Med Chem 51: 373-375

  • DOI: 10.1021/jm701385c
  • Primary Citation of Related Structures:  
    3BM9, 3BMY

  • PubMed Abstract: 
  • Heat shock protein 90 (Hsp90) is a molecular chaperone that is responsible for activating many signaling proteins and is a promising target in tumor biology. We have identified small-molecule benzisoxazole derivatives as Hsp90 inhibitors. Crystallographic studies show that these compounds bind in the ATP binding pocket interacting with the Asp93 ...

    Heat shock protein 90 (Hsp90) is a molecular chaperone that is responsible for activating many signaling proteins and is a promising target in tumor biology. We have identified small-molecule benzisoxazole derivatives as Hsp90 inhibitors. Crystallographic studies show that these compounds bind in the ATP binding pocket interacting with the Asp93. Structure based optimization led to the identification of potent analogues, such as 13, with good biochemical profiles.


    Organizational Affiliation

    Chemical and Screening Sciences, Wyeth Research, Pearl River, NY 10965, USA. gopalsa@wyeth.com



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Heat shock protein HSP 90-alphaA226Homo sapiensMutation(s): 0 
Gene Names: HSP90AA1HSP90AHSPC1HSPCA
UniProt & NIH Common Fund Data Resources
Find proteins for P07900 (Homo sapiens)
Explore P07900 
Go to UniProtKB:  P07900
PHAROS:  P07900
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BXZ (Subject of Investigation/LOI)
Query on BXZ

Download Ideal Coordinates CCD File 
B [auth A]4-bromo-6-(6-hydroxy-1,2-benzisoxazol-3-yl)benzene-1,3-diol
C13 H8 Br N O4
LZACPHWPRDKUPK-UHFFFAOYSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
BXZ PDBBind:  3BM9 IC50: 190 (nM) from 1 assay(s)
BindingDB:  3BM9 IC50: 190 (nM) from 1 assay(s)
Binding MOAD:  3BM9 IC50: 190 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.186 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.165 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 66.089α = 90
b = 89.033β = 90
c = 100.172γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
StructureStudiodata collection
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-07-08
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance