4LWE

Crystal Structure of the human Hsp90-alpha N-domain bound to the hsp90 inhibitor FJ2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.195 
  • R-Value Work: 0.187 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Discovery of potent N-(isoxazol-5-yl)amides as HSP90 inhibitors.

Chen, D.Shen, A.Li, J.Shi, F.Chen, W.Ren, J.Liu, H.Xu, Y.Wang, X.Yang, X.Sun, Y.Yang, M.He, J.Wang, Y.Zhang, L.Huang, M.Geng, M.Xiong, B.Shen, J.

(2014) Eur.J.Med.Chem. 87: 765-781

  • DOI: 10.1016/j.ejmech.2014.09.065
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • HSP90 is ubiquitously overexpressed in a broad spectrum of human cancers and has been recognized as an attractive target for cancer treatment. Here, we described the fragment screening, synthesis and structure-activity relationship studies of small m ...

    HSP90 is ubiquitously overexpressed in a broad spectrum of human cancers and has been recognized as an attractive target for cancer treatment. Here, we described the fragment screening, synthesis and structure-activity relationship studies of small molecule inhibitors with 4,5-diarylisoxazole scaffold targeting HSP90. Among them, the compound N-(3-(2,4-dihydroxy-5-isopropylphenyl)-4-(4-((4-morpholinopiperidin-1-yl)methyl)phenyl)isoxazol-5-yl)cyclopropanecarboxamide (108) showed high affinity for binding to HSP90 (FP binding assay, IC50 = 0.030 μM) and inhibited the proliferation of various human cancer cell lines with averaging GI50 about 88 nM. Compound 108 exhibited its functional inhibition of HSP90 by depleting key signaling pathways and concomitantly elevating of HSP70 and HSP27 in U-87MG cells. Further in vivo studies showed that compound 108 strongly suppressed the tumor growth of human glioblastoma xenograft model U-87MG with T/C = 18.35% at 50 mg/kg q3w/2.5w. Moreover, compound 108 also exhibited good pharmacokinetic properties. Together, our study implicates that compound 108 is a promising candidate of HSP90 inhibitor and is currently advanced to preclinical study.


    Organizational Affiliation

    Department of Medicinal Chemistry, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Heat shock protein HSP 90-alpha
A
208Homo 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
FJ2
Query on FJ2

Download SDF File 
Download CCD File 
A
N-[3-(5-chloro-2,4-dihydroxyphenyl)-4-(4-methoxyphenyl)-1,2-oxazol-5-yl]acetamide
C18 H15 Cl N2 O5
ZPXWZHXHEMSPJU-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
FJ2IC50: 70 nM (100) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.195 
  • R-Value Work: 0.187 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 67.000α = 90.00
b = 90.366β = 90.00
c = 97.646γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
PHENIXmodel building
PHENIXphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-07-30
    Type: Initial release
  • Version 1.1: 2016-10-12
    Type: Database references