2JKI

Complex of Hsp90 N-terminal and Sgt1 CS domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.3 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural and Functional Coupling of Hsp90- and Sgt1-Centred Multi-Protein Complexes.

Zhang, M.Boter, M.Li, K.Kadota, Y.Panaretou, B.Prodromou, C.Shirasu, K.Pearl, L.H.

(2008) Embo J. 27: 2789

  • DOI: 10.1038/emboj.2008.190

  • PubMed Abstract: 
  • Sgt1 is an adaptor protein implicated in a variety of processes, including formation of the kinetochore complex in yeast, and regulation of innate immunity systems in plants and animals. Sgt1 has been found to associate with SCF E3 ubiquitin ligases, ...

    Sgt1 is an adaptor protein implicated in a variety of processes, including formation of the kinetochore complex in yeast, and regulation of innate immunity systems in plants and animals. Sgt1 has been found to associate with SCF E3 ubiquitin ligases, the CBF3 kinetochore complex, plant R proteins and related animal Nod-like receptors, and with the Hsp90 molecular chaperone. We have determined the crystal structure of the core Hsp90-Sgt1 complex, revealing a distinct site of interaction on the Hsp90 N-terminal domain. Using the structure, we developed mutations in Sgt1 interfacial residues, which specifically abrogate interaction with Hsp90, and disrupt Sgt1-dependent functions in vivo, in plants and yeast. We show that Sgt1 bridges the Hsp90 molecular chaperone system to the substrate-specific arm of SCF ubiquitin ligase complexes, suggesting a role in SCF assembly and regulation, and providing multiple complementary routes for ubiquitination of Hsp90 client proteins.


    Organizational Affiliation

    Section of Structural Biology, The Institute of Cancer Research, Chester Beatty Laboratories, London, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CYTOSOLIC HEAT SHOCK PROTEIN 90
A, B, C
223Hordeum vulgareGene Names: HSP90
Find proteins for Q7XJ80 (Hordeum vulgare)
Go to UniProtKB:  Q7XJ80
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
SGT1-LIKE PROTEIN
S, T, U
90Arabidopsis thalianaGene Names: SGT1A
Find proteins for Q9SUR9 (Arabidopsis thaliana)
Go to UniProtKB:  Q9SUR9
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download SDF File 
Download CCD File 
A, B, C
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.3 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.199 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 100.268α = 90.00
b = 129.654β = 90.00
c = 135.998γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2008-08-28 
  • Released Date: 2008-10-07 
  • Deposition Author(s): Zhang, M., Pearl, L.H.

Revision History 

  • Version 1.0: 2008-10-07
    Type: Initial release
  • Version 1.1: 2011-05-07
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance