5UCJ

Hsp90b N-terminal domain with inhibitors


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.69 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.175 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure-guided design of an Hsp90 beta N-terminal isoform-selective inhibitor.

Khandelwal, A.Kent, C.N.Balch, M.Peng, S.Mishra, S.J.Deng, J.Day, V.W.Liu, W.Subramanian, C.Cohen, M.Holzbeierlein, J.M.Matts, R.Blagg, B.S.J.

(2018) Nat Commun 9: 425-425

  • DOI: 10.1038/s41467-017-02013-1
  • Primary Citation of Related Structures:  
    5UC4, 5UCH, 5UCJ, 5UCI

  • PubMed Abstract: 
  • The 90 kDa heat shock protein (Hsp90) is a molecular chaperone responsible for folding proteins that are directly associated with cancer progression. Consequently, inhibition of the Hsp90 protein folding machinery results in a combinatorial attack on ...

    The 90 kDa heat shock protein (Hsp90) is a molecular chaperone responsible for folding proteins that are directly associated with cancer progression. Consequently, inhibition of the Hsp90 protein folding machinery results in a combinatorial attack on numerous oncogenic pathways. Seventeen small-molecule inhibitors of Hsp90 have entered clinical trials, all of which bind the Hsp90 N-terminus and exhibit pan-inhibitory activity against all four Hsp90 isoforms. pan-Inhibition of Hsp90 appears to be detrimental as toxicities have been reported alongside induction of the pro-survival heat shock response. The development of Hsp90 isoform-selective inhibitors represents an alternative approach towards the treatment of cancer that may limit some of the detriments. Described herein is a structure-based approach to design isoform-selective inhibitors of Hsp90β, which induces the degradation of select Hsp90 clients without concomitant induction of Hsp90 levels. Together, these initial studies support the development of Hsp90β-selective inhibitors as a method to overcome the detriments associated with pan-inhibition.


    Organizational Affiliation

    Department of Chemistry and Biochemistry, The University of Notre Dame, 305 McCourtney Hall, Notre Dame, IN, 46556, USA. bblagg@nd.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Heat shock protein HSP 90-betaABCD220Homo sapiensMutation(s): 0 
Gene Names: HSP90AB1HSP90BHSPC2HSPCB
Find proteins for P08238 (Homo sapiens)
Explore P08238 
Go to UniProtKB:  P08238
NIH Common Fund Data Resources
PHAROS  P08238
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
KU3
Query on KU3

Download CCD File 
A, B, C, D
(5-fluoroisoindolin-2-yl)(4-hydroxy-5-isopropylbenzo[d]isoxazol-7-yl)methanone
C19 H17 F N2 O3
XKVXUSFQFBIYEQ-UHFFFAOYSA-N
 Ligand Interaction
DMS
Query on DMS

Download CCD File 
A, B, C, D
DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
KU3Kd:  440   nM  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.69 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.175 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 129.464α = 90
b = 129.464β = 90
c = 106.357γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-3000data reduction
HKL-3000data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2018-01-10
    Type: Initial release
  • Version 1.1: 2018-03-07
    Changes: Database references