1GME

Crystal structure and assembly of an eukaryotic small heat shock protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.231 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal Structure and Assembly of an Eukaryotic Small Heat Shock Protein

Van Montfort, R.L.M.Basha, E.Friedrich, K.L.Slingsby, C.Vierling, E.

(2001) Nat.Struct.Mol.Biol. 8: 1025

  • DOI: 10.1038/nsb722

  • PubMed Abstract: 
  • The 2.7 A structure of wheat HSP16.9, a member of the small heat shock proteins (sHSPs), indicates how its alpha-crystallin domain and flanking extensions assemble into a dodecameric double disk. The folding of the monomer and assembly of the oligome ...

    The 2.7 A structure of wheat HSP16.9, a member of the small heat shock proteins (sHSPs), indicates how its alpha-crystallin domain and flanking extensions assemble into a dodecameric double disk. The folding of the monomer and assembly of the oligomer are mutually interdependent, involving strand exchange, helix swapping, loose knots and hinged extensions. In support of the chaperone mechanism, the substrate-bound dimers, in temperature-dependent equilibrium with higher assembly forms, have unfolded N-terminal arms and exposed conserved hydrophobic binding sites on the alpha-crystallin domain. The structure also provides a model by which members of the sHSP protein family bind unfolded substrates, which are involved in a variety of neurodegenerative diseases and cataract formation.


    Organizational Affiliation

    Department of Crystallography, Birkbeck College, Malet Street, London WC1E 7HX UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HEAT SHOCK PROTEIN 16.9B
A, B, C, D
151Triticum aestivumMutation(s): 0 
Gene Names: hsp16.9B
Find proteins for Q41560 (Triticum aestivum)
Go to UniProtKB:  Q41560
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.231 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 171.645α = 90.00
b = 171.645β = 90.00
c = 124.157γ = 120.00
Software Package:
Software NamePurpose
SOLOMONphasing
SnBphasing
SCALAdata scaling
CNSrefinement
SHARPphasing
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-11-29
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-07-05
    Type: Refinement description