2XCM

COMPLEX OF HSP90 N-TERMINAL, SGT1 CS AND RAR1 CHORD2 DOMAIN

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.200 

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Literature

Structural Basis for Assembly of Hsp90-Sgt1-Chord Protein Complexes: Implications for Chaperoning of Nlr Innate Immunity Receptors

Zhang, M., Kadota, Y., Prodromou, C., Shirasu, K., Pearl, L.H.

(2010) Mol Cell 39: 269

  • DOI: 10.1016/j.molcel.2010.05.010
  • Primary Citation of Related Structures:  
    2XCM

  • PubMed Abstract: 

    • Hsp90-mediated function of NLR receptors in plant and animal innate immunity depends on the cochaperone Sgt1 and, at least in plants, on a cysteine- and histidine-rich domains (CHORD)-containing protein Rar1. Functionally, CHORD domains are associated with CS domains, either within the same protein, as in the mammalian melusin and Chp1, or in separate but interacting proteins, as in the plant Rar1 and Sgt1 ...

    Hsp90-mediated function of NLR receptors in plant and animal innate immunity depends on the cochaperone Sgt1 and, at least in plants, on a cysteine- and histidine-rich domains (CHORD)-containing protein Rar1. Functionally, CHORD domains are associated with CS domains, either within the same protein, as in the mammalian melusin and Chp1, or in separate but interacting proteins, as in the plant Rar1 and Sgt1. Both CHORD and CS domains are independently capable of interacting with the molecular chaperone Hsp90 and can coexist in complexes with Hsp90. We have now determined the structure of an Hsp90-CS-CHORD ternary complex, providing a framework for understanding the dynamic nature of Hsp90-Rar1-Sgt1 complexes. Mutational and biochemical analyses define the architecture of the ternary complex that recruits nucleotide-binding leucine-rich repeat receptors (NLRs) by manipulating the structural elements to control the ATPase-dependent conformational cycle of the chaperone.

    Organizational Affiliation: 

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



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CYTOSOLIC HEAT SHOCK PROTEIN 90A, B214Hordeum vulgareMutation(s): 0 
Gene Names: HSP90
UniProt
Find proteins for Q7XJ80 (Hordeum vulgare)
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Go to UniProtKB:  Q7XJ80
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UniProt GroupQ7XJ80
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
SGT1-LIKE PROTEINC, D92Arabidopsis thalianaMutation(s): 0 
Gene Names: SGT1A, At4g23570, F9D16.40
UniProt
Find proteins for Q9SUR9 (Arabidopsis thaliana)
Explore Q9SUR9 
Go to UniProtKB:  Q9SUR9
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UniProt GroupQ9SUR9
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
RAR1E, F74Arabidopsis thalianaMutation(s): 0 
Gene Names: RAR1, PBS2, RPR2, At5g51700, MIO24.17
UniProt
Find proteins for Q9SE33 (Arabidopsis thaliana)
Explore Q9SE33 
Go to UniProtKB:  Q9SE33
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UniProt GroupQ9SE33
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.200 
  • Space Group: P 32
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.89α = 90
b = 88.89β = 90
c = 117.82γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2010-04-23 
  • Released Date: 2010-08-11 
    • Deposition Author(s): Zhang, M., Pearl, L.H.

Revision History  (Full details and data files)

  • Version 1.0: 2010-08-11
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance