6CJS

Candida albicans Hsp90 nucleotide binding domain in complex with AUY922


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.167 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.4 of the entry. See complete history


Literature

Structural basis for species-selective targeting of Hsp90 in a pathogenic fungus.

Whitesell, L.Robbins, N.Huang, D.S.McLellan, C.A.Shekhar-Guturja, T.LeBlanc, E.V.Nation, C.S.Hui, R.Hutchinson, A.Collins, C.Chatterjee, S.Trilles, R.Xie, J.L.Krysan, D.J.Lindquist, S.Porco Jr., J.A.Tatu, U.Brown, L.E.Pizarro, J.Cowen, L.E.

(2019) Nat Commun 10: 402-402

  • DOI: https://doi.org/10.1038/s41467-018-08248-w
  • Primary Citation of Related Structures:  
    6CJI, 6CJJ, 6CJL, 6CJP, 6CJR, 6CJS

  • PubMed Abstract: 

    New strategies are needed to counter the escalating threat posed by drug-resistant fungi. The molecular chaperone Hsp90 affords a promising target because it supports survival, virulence and drug-resistance across diverse pathogens. Inhibitors of human Hsp90 under development as anticancer therapeutics, however, exert host toxicities that preclude their use as antifungals. Seeking a route to species-selectivity, we investigate the nucleotide-binding domain (NBD) of Hsp90 from the most common human fungal pathogen, Candida albicans. Here we report structures for this NBD alone, in complex with ADP or in complex with known Hsp90 inhibitors. Encouraged by the conformational flexibility revealed by these structures, we synthesize an inhibitor with >25-fold binding-selectivity for fungal Hsp90 NBD. Comparing co-crystals occupied by this probe vs. anticancer Hsp90 inhibitors revealed major, previously unreported conformational rearrangements. These insights and our probe's species-selectivity in culture support the feasibility of targeting Hsp90 as a promising antifungal strategy.


  • Organizational Affiliation

    Department of Molecular Genetics, University of Toronto, Toronto, ON, M5G 1M1, Canada.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Heat shock protein 90 homolog230Candida albicans SC5314Mutation(s): 0 
Gene Names: HSP90CAALFM_C702030WACaJ7.0234CaO19.13868CaO19.6515
UniProt
Find proteins for P46598 (Candida albicans (strain SC5314 / ATCC MYA-2876))
Explore P46598 
Go to UniProtKB:  P46598
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP46598
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
2GJ (Subject of Investigation/LOI)
Query on 2GJ

Download Ideal Coordinates CCD File 
B [auth A]5-[2,4-DIHYDROXY-5-(1-METHYLETHYL)PHENYL]-N-ETHYL-4-[4-(MORPHOLIN-4-YLMETHYL)PHENYL]ISOXAZOLE-3-CARBOXAMIDE
C26 H31 N3 O5
NDAZATDQFDPQBD-UHFFFAOYSA-N
EDO
Query on EDO

Download Ideal Coordinates CCD File 
C [auth A]1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.167 
  • Space Group: I 41 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.21α = 90
b = 86.21β = 90
c = 225.846γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
Cootmodel building

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United States1R01AI120958

Revision History  (Full details and data files)

  • Version 1.0: 2019-01-30
    Type: Initial release
  • Version 1.1: 2019-02-13
    Changes: Data collection, Database references
  • Version 1.2: 2019-02-20
    Changes: Author supporting evidence, Data collection
  • Version 1.3: 2019-12-18
    Changes: Author supporting evidence
  • Version 1.4: 2023-10-04
    Changes: Data collection, Database references, Refinement description