2QF6

HSP90 complexed with A56322


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.231 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Discovery and design of novel HSP90 inhibitors using multiple fragment-based design strategies.

Huth, J.R.Park, C.Petros, A.M.Kunzer, A.R.Wendt, M.D.Wang, X.Lynch, C.L.Mack, J.C.Swift, K.M.Judge, R.A.Chen, J.Richardson, P.L.Jin, S.Tahir, S.K.Matayoshi, E.D.Dorwin, S.A.Ladror, U.S.Severin, J.M.Walter, K.A.Bartley, D.M.Fesik, S.W.Elmore, S.W.Hajduk, P.J.

(2007) Chem.Biol.Drug Des. 70: 1-12

  • DOI: 10.1111/j.1747-0285.2007.00535.x
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The molecular chaperone HSP90 has been shown to facilitate cancer cell survival by stabilizing key proteins responsible for a malignant phenotype. We report here the results of parallel fragment-based drug design approaches in the design of novel HSP ...

    The molecular chaperone HSP90 has been shown to facilitate cancer cell survival by stabilizing key proteins responsible for a malignant phenotype. We report here the results of parallel fragment-based drug design approaches in the design of novel HSP90 inhibitors. Initial aminopyrimidine leads were elaborated using high-throughput organic synthesis to yield nanomolar inhibitors of the enzyme. Second site leads were also identified which bound to HSP90 in two distinct conformations, an 'open' and 'closed' form. Intriguingly, linked fragment approaches targeting both of these conformations were successful in producing novel, micromolar inhibitors. Overall, this study shows that, with only a few fragment hits, multiple lead series can be generated for HSP90 due to the inherent flexibility of the active site. Thus, ample opportunities exist to use these lead series in the development of clinically useful HSP90 inhibitors for the treatment of cancers.


    Organizational Affiliation

    Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, IL 60064, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Heat shock protein HSP 90-alpha
A, B, C, D
207Homo 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
A56
Query on A56

Download SDF File 
Download CCD File 
A, B, C, D
6-(3-BROMO-2-NAPHTHYL)-1,3,5-TRIAZINE-2,4-DIAMINE
C13 H10 Br N5
RXSSKAZHCZWJPP-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
A56IC50: 462 nM (92) BINDINGDB
A56Ki: 320 nM (99) BINDINGDB
A56Kd: <10000 nM (99) BINDINGDB
A56Ki: 320 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.231 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 118.824α = 90.00
b = 118.824β = 90.00
c = 180.779γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
HKL-2000data collection
HKL-2000data reduction
CNSphasing
CNXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2007-06-26 
  • Released Date: 2008-07-01 
  • Deposition Author(s): Park, C.H.

Revision History 

  • Version 1.0: 2008-07-01
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance