3B27

Hsp90 alpha N-terminal domain in complex with an inhibitor Ro4919127


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.184 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Lead generation of heat shock protein 90 inhibitors by a combination of fragment-based approach, virtual screening, and structure-based drug design

Miura, T.Fukami, T.A.Hasegawa, K.Ono, N.Suda, A.Shindo, H.Yoon, D.O.Kim, S.J.Na, Y.J.Aoki, Y.Shimma, N.Tsukuda, T.Shiratori, Y.

(2011) Bioorg.Med.Chem.Lett. 21: 5778-5783

  • DOI: 10.1016/j.bmcl.2011.08.001
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Heat shock protein 90 (Hsp90) is a molecular chaperone which regulates maturation and stabilization of its substrate proteins, known as client proteins. Many client proteins of Hsp90 are involved in tumor progression and survival and therefore Hsp90 ...

    Heat shock protein 90 (Hsp90) is a molecular chaperone which regulates maturation and stabilization of its substrate proteins, known as client proteins. Many client proteins of Hsp90 are involved in tumor progression and survival and therefore Hsp90 can be a good target for developing anticancer drugs. With the aim of efficiently identifying a new class of orally available inhibitors of the ATP binding site of this protein, we conducted fragment screening and virtual screening in parallel against Hsp90. This approach quickly identified 2-aminotriazine and 2-aminopyrimidine derivatives as specific ligands to Hsp90 with high ligand efficiency. In silico evaluation of the 3D X-ray Hsp90 complex structures of the identified hits allowed us to promptly design CH5015765, which showed high affinity for Hsp90 and antitumor activity in human cancer xenograft mouse models.


    Organizational Affiliation

    Kamakura Research Laboratories, Chugai Pharmaceutical Co., Ltd, 200 Kajiwara, Kamakura, Kanagawa 247-8530, Japan. miuratka@chugai-pharm.co.jp




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Heat shock protein HSP 90-alpha
A
229Homo sapiensMutation(s): 0 
Gene 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
B2T
Query on B2T

Download SDF File 
Download CCD File 
A
4-(2-chlorophenyl)-6-(methylsulfanyl)-1,3,5-triazin-2-amine
C10 H9 Cl N4 S
JVOIPLKVZOLUDL-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
B2TIC50: 750 nM (100) BINDINGDB
B2TKd: 6900 nM (100) BINDINGDB
B2TKd: 6900 nM BINDINGMOAD
B2TKd: 6900 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.184 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 52.524α = 90.00
b = 43.996β = 113.90
c = 53.804γ = 90.00
Software Package:
Software NamePurpose
TNTrefinement
HKL-2000data scaling
MOLREPphasing
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
DENZOdata reduction
HKL-2000data reduction
BUSTERrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2011-07-21 
  • Released Date: 2011-09-14 
  • Deposition Author(s): Fukami, T.A., Ono, N.

Revision History 

  • Version 1.0: 2011-09-14
    Type: Initial release
  • Version 1.1: 2013-06-19
    Type: Database references
  • Version 1.2: 2017-10-11
    Type: Refinement description