3INX

HSP90 N-TERMINAL DOMAIN with pochoxime B


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Inhibition of HSP90 with pochoximes: SAR and structure-based insights.

Barluenga, S.Fontaine, J.G.Wang, C.Aouadi, K.Chen, R.Beebe, K.Neckers, L.Winssinger, N.

(2009) Chembiochem 10: 2753-2759

  • DOI: 10.1002/cbic.200900494
  • Primary Citation of Related Structures:  
    3INW, 3INX

  • PubMed Abstract: 
  • The pochoximes, based on the radicicol pharmacophore, are potent inhibitors of heat shock protein 90 (HSP90) that retain their activity in vivo. Herein we report an extended library that broadly explores the structure-activity relationship (SAR) of the pochoximes with four points of diversity ...

    The pochoximes, based on the radicicol pharmacophore, are potent inhibitors of heat shock protein 90 (HSP90) that retain their activity in vivo. Herein we report an extended library that broadly explores the structure-activity relationship (SAR) of the pochoximes with four points of diversity. Several modifications were identified that afford improved cellular efficacy, new opportunities for conjugation, and further diversifications. Cocrystal structures of pochoximes A and B with HSP90 show that pochoximes bind to a different conformation of HSP90 than radicicol and provide a rationale for the enhanced affinity of the pochoximes relative to radicicol and the pochonins.


    Organizational Affiliation

    Institut de Science et d'Ingénierie Supramoleculaires, Université de Strasbourg, CNRS (UMR7006), 8 Allée Gaspard Monge, 67000 Strasbourg, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Heat shock protein HSP 90-alphaA228Homo sapiensMutation(s): 0 
Gene Names: HSP90AA1HSP90AHSPC1HSPCA
EC: 3.6.4.10
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 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
JZC (Subject of Investigation/LOI)
Query on JZC

Download Ideal Coordinates CCD File 
D [auth A](5E,9E,11E)-14,16-dihydroxy-3,4,7,8-tetrahydro-1H-2-benzoxacyclotetradecine-1,11(12H)-dione 11-[O-(2-oxo-2-piperidin-1-ylethyl)oxime]
C24 H30 N2 O6
NHVOTZLAUSUFLW-LUHBRQSQSA-N
 Ligand Interaction
DMS
Query on DMS

Download Ideal Coordinates CCD File 
B [auth A], C [auth A]DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
JZC Binding MOAD:  3INX IC50: 22 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 67.2α = 90
b = 89.618β = 90
c = 98.385γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
AMoREphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment  



Entry History 

Deposition Data

  • Deposited Date: 2009-08-13 
  • Released Date: 2010-08-18 
  • Deposition Author(s): Korndoerfer, I.P.

Revision History  (Full details and data files)

  • Version 1.0: 2010-08-18
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance