1UY6

Human Hsp90-alpha with 9-Butyl-8-(3,4,5-trimethoxy-benzyl)-9H-purin-6-ylamine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 
    0.231 (Depositor), 0.240 (DCC) 
  • R-Value Work: 
    0.182 (Depositor), 0.190 (DCC) 
  • R-Value Observed: 
    0.184 (Depositor) 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted PU3Click on this verticalbar to view details

This is version 1.3 of the entry. See complete history


Literature

Structure-Activity Relationships in Purine-Based Inhibitor Binding to Hsp90 Isoforms

Wright, L.Barril, X.Dymock, B.Sheridan, L.Surgenor, A.Beswick, M.Drysdale, M.Collier, A.Massey, A.Davies, N.Fink, A.Fromont, C.Aherne, W.Boxall, K.Sharp, S.Workman, P.Hubbard, R.E.

(2004) Chem Biol 11: 775

  • DOI: https://doi.org/10.1016/j.chembiol.2004.03.033
  • Primary Citation of Related Structures:  
    1UY6, 1UY7, 1UY8, 1UY9, 1UYC, 1UYD, 1UYE, 1UYF, 1UYG, 1UYH, 1UYI, 1UYK, 1UYL, 1UYM

  • PubMed Abstract: 

    Inhibition of the ATPase activity of the chaperone protein HSP90 is a potential strategy for treatment of cancers. We have determined structures of the HSP90alpha N-terminal domain complexed with the purine-based inhibitor, PU3, and analogs with enhanced potency both in enzyme and cell-based assays. The compounds induce upregulation of HSP70 and downregulation of the known HSP90 client proteins Raf-1, CDK4, and ErbB2, confirming that the molecules inhibit cell growth by a mechanism dependent on HSP90 inhibition. We have also determined the first structure of the N-terminal domain of HSP90beta, complexed with PU3. The structures allow a detailed rationale to be developed for the observed affinity of the PU3 class of compounds for HSP90 and also provide a structural framework for design of compounds with improved binding affinity and drug-like properties.


  • Organizational Affiliation

    Vernalis (R&D) Ltd., Granta Park, Abington, Cambridge CB1 6GB, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HEAT SHOCK PROTEIN HSP 90-ALPHA236Homo sapiensMutation(s): 0 
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
GTEx:  ENSG00000080824 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP07900
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
PU3
Query on PU3

Download Ideal Coordinates CCD File 
B [auth A]9-BUTYL-8-(3,4,5-TRIMETHOXYBENZYL)-9H-PURIN-6-AMINE
C19 H25 N5 O3
TUOSCZDRWRYPRS-UHFFFAOYSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
PU3 BindingDB:  1UY6 IC50: min: 1000, max: 2.00e+5 (nM) from 2 assay(s)
EC50: min: 3200, max: 4.00e+4 (nM) from 3 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free:  0.231 (Depositor), 0.240 (DCC) 
  • R-Value Work:  0.182 (Depositor), 0.190 (DCC) 
  • R-Value Observed: 0.184 (Depositor) 
Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 66.93α = 90
b = 91.017β = 90
c = 98.331γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted PU3Click on this verticalbar to view details

Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2004-07-01
    Type: Initial release
  • Version 1.1: 2011-05-07
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-12-13
    Changes: Data collection, Database references, Other, Refinement description