1UYM

Human Hsp90-beta with PU3 (9-Butyl-8(3,4,5-trimethoxy-benzyl)-9H-purin-6-ylamine)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.294 
  • R-Value Work: 0.235 

wwPDB Validation 3D Report Full Report


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

  • 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 enha ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HEAT SHOCK PROTEIN HSP 90-BETA
A
220Homo sapiensGene Names: HSP90AB1 (HSP90B, HSPC2, HSPCB)
Find proteins for P08238 (Homo sapiens)
Go to Gene View: HSP90AB1
Go to UniProtKB:  P08238
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PU3
Query on PU3

Download SDF File 
Download CCD File 
A
9-BUTYL-8-(3,4,5-TRIMETHOXYBENZYL)-9H-PURIN-6-AMINE
C19 H25 N5 O3
TUOSCZDRWRYPRS-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
PU3EC50: 15000 - 40000 nM (100) BINDINGDB
PU3IC50: 1000 nM (100) BINDINGDB
PU3IC50: 1000 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.294 
  • R-Value Work: 0.235 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 66.861α = 90.00
b = 90.707β = 90.00
c = 96.289γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
d*TREKdata reduction
MOLREPphasing
d*TREKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-08-17
    Type: Initial release
  • Version 1.1: 2011-05-07
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-07-05
    Type: Data collection