3WHA

Hsp90 alpha N-terminal domain in complex with a tricyclic inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.3 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.184 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Design and synthesis of 2-amino-6-(1H,3H-benzo[de]isochromen-6-yl)-1,3,5-triazines as novel Hsp90 inhibitors

Suda, A.Kawasaki, K.Komiyama, S.Isshiki, Y.Yoon, D.-O.Kim, S.-J.Na, Y.-J.Hasegawa, K.Fukami, T.A.Sato, S.Miura, T.Ono, N.Yamazaki, T.Saitoh, R.Shimma, N.Shiratori, Y.Tsukuda, T.

(2014) Bioorg.Med.Chem. 22: 892-905

  • DOI: 10.1016/j.bmc.2013.11.036

  • PubMed Abstract: 
  • A novel series of 2-amino-1,3,5-triazines bearing a tricyclic moiety as heat shock protein 90 (Hsp90) inhibitors is described. Molecular design was performed using X-ray cocrystal structures of the lead compound CH5015765 and natural Hsp90 inhibitor ...

    A novel series of 2-amino-1,3,5-triazines bearing a tricyclic moiety as heat shock protein 90 (Hsp90) inhibitors is described. Molecular design was performed using X-ray cocrystal structures of the lead compound CH5015765 and natural Hsp90 inhibitor geldanamycin with Hsp90. We optimized affinity to Hsp90, in vitro cell growth inhibitory activity, water solubility, and liver microsomal stability of inhibitors and identified CH5138303. This compound showed high binding affinity for N-terminal Hsp90α (Kd=0.52nM) and strong in vitro cell growth inhibition against human cancer cell lines (HCT116 IC50=0.098μM, NCI-N87 IC50=0.066μM) and also displayed high oral bioavailability in mice (F=44.0%) and potent antitumor efficacy in a human NCI-N87 gastric cancer xenograft model (tumor growth inhibition=136%).


    Organizational Affiliation

    Discovery Research Center, C&C Research Laboratories, DRC Natural Sciences Campus, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do 440-746, Republic of Korea.,Research Division, Chugai Pharmaceutical Co., Ltd, 200 Kajiwara, Kamakura, Kanagawa 247-8530, Japan.,Research Division, Chugai Pharmaceutical Co., Ltd, 200 Kajiwara, Kamakura, Kanagawa 247-8530, Japan. Electronic address: sudaats@chugai-pharm.co.jp.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Heat shock protein HSP 90-alpha
A, B
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 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
WHA
Query on WHA

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Download CCD File 
A, B
4-{[4-amino-6-(5-chloro-1H,3H-benzo[de]isochromen-6-yl)-1,3,5-triazin-2-yl]sulfanyl}butanamide
C19 H18 Cl N5 O2 S
VIGHQZSTZWNWFA-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
WHAKd: 0.48 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.3 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.184 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 107.170α = 90.00
b = 98.920β = 124.55
c = 64.240γ = 90.00
Software Package:
Software NamePurpose
BUSTERrefinement
BUSTER-TNTrefinement
PHASERphasing
PDB_EXTRACTdata extraction
XDSdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2013-08-23 
  • Released Date: 2014-01-29 
  • Deposition Author(s): Fukami, T.A., Ono, N.

Revision History 

  • Version 1.0: 2014-01-29
    Type: Initial release