2CG9

Crystal structure of an Hsp90-Sba1 closed chaperone complex

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.353 
  • R-Value Work: 0.312 
  • R-Value Observed: 0.314 

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This is version 1.3 of the entry. See complete history. 


Literature

Crystal Structure of an Hsp90-Nucleotide-P23/Sba1 Closed Chaperone Complex

Ali, M.M.U., Roe, S.M., Vaughan, C., Meyer, P., Panaretou, B., Piper, P.W., Prodromou, C., Pearl, L.H.

(2006) Nature 440: 1013

  • DOI: 10.1038/nature04716
  • Primary Citation of Related Structures:  
    2CG9, 2CGE

  • PubMed Abstract: 

    • Hsp90 (heat shock protein of 90 kDa) is a ubiquitous molecular chaperone responsible for the assembly and regulation of many eukaryotic signalling systems and is an emerging target for rational chemotherapy of many cancers. Although the structures of iso ...

    Hsp90 (heat shock protein of 90 kDa) is a ubiquitous molecular chaperone responsible for the assembly and regulation of many eukaryotic signalling systems and is an emerging target for rational chemotherapy of many cancers. Although the structures of isolated domains of Hsp90 have been determined, the arrangement and ATP-dependent dynamics of these in the full Hsp90 dimer have been elusive and contentious. Here we present the crystal structure of full-length yeast Hsp90 in complex with an ATP analogue and the co-chaperone p23/Sba1. The structure reveals the complex architecture of the 'closed' state of the Hsp90 chaperone, the extensive interactions between domains and between protein chains, the detailed conformational changes in the amino-terminal domain that accompany ATP binding, and the structural basis for stabilization of the closed state by p23/Sba1. Contrary to expectations, the closed Hsp90 would not enclose its client proteins but provides a bipartite binding surface whose formation and disruption are coupled to the chaperone ATPase cycle.

    Organizational Affiliation: 

    Section of Structural Biology, Institute of Cancer Research, Chester Beatty Laboratories, 237 Fulham Road, London SW3 6JB, UK.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ATP-DEPENDENT MOLECULAR CHAPERONE HSP82 A, B677Saccharomyces cerevisiaeMutation(s): 0 
Find proteins for P02829 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P02829 
Go to UniProtKB:  P02829
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
CO-CHAPERONE PROTEIN SBA1 X, Y134Saccharomyces cerevisiaeMutation(s): 1 
Find proteins for P28707 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P28707 
Go to UniProtKB:  P28707
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP
Download Ideal Coordinates CCD File 
A, B
ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.353 
  • R-Value Work: 0.312 
  • R-Value Observed: 0.314 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 126.729α = 90
b = 126.729β = 90
c = 279.777γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-04-12
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-05-08
    Changes: Data collection, Derived calculations, Experimental preparation, Other