2CG9

Crystal structure of an Hsp90-Sba1 closed chaperone complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.353 
  • R-Value Work: 0.312 

wwPDB Validation 3D Report Full Report


This is version 1.2 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:  

  • 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 ...

    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

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ATP-DEPENDENT MOLECULAR CHAPERONE HSP82
A, B
677Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: HSP82 (HSP90)
Find proteins for P02829 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P02829
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
CO-CHAPERONE PROTEIN SBA1
X, Y
134Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 1 
Gene Names: SBA1
Find proteins for P28707 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P28707
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP

Download SDF File 
Download 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: 3.1 Å
  • R-Value Free: 0.353 
  • R-Value Work: 0.312 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 126.729α = 90.00
b = 126.729β = 90.00
c = 279.777γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
MOSFLMdata reduction
SCALAdata scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-04-12
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance