Biological Assembly 1  

 3D View: Structure | Electron Density

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Protein Workshop | Ligand Explorer

Global Symmetry: Dihedral - D3  (3D View)
Global Stoichiometry: Hetero 12-mer - A6B Pseudo Symmetry: Dihedral - D3  (3D View)
Pseudo Stoichiometry: Homo 12-mer - A12 

Biological assembly 1 assigned by authors and generated by PQS (software)

Biological Assembly 2  

 3D View: Structure | Electron Density

Standalone Viewers  (To be retired June 1st  )
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Global Symmetry: Dihedral - D3  (3D View)
Global Stoichiometry: Hetero 12-mer - A6B Pseudo Symmetry: Dihedral - D3  (3D View)
Pseudo Stoichiometry: Homo 12-mer - A12 

Biological assembly 2 assigned by authors and generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 67.52 kDa 
• Atom Count: 4140 
• Residue Count: 519 
• Unique protein chains: 1

1GME

Crystal structure and assembly of an eukaryotic small heat shock protein

• DOI: 10.2210/pdb1GME/pdb

• Classification: CHAPERONE
• Organism(s): Triticum aestivum
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2001-09-13 Released: 2001-11-29 
• Deposition Author(s): Van Montfort, R.L.M., Basha, E., Friedrich, K.L., Slingsby, C., Vierling, E.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.286 
• R-Value Work: 0.231 
• R-Value Observed: 0.231 

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 Biol 8: 1025

• PubMed: 11702068 
• DOI: 10.1038/nsb722
• Structures With Same Primary Citation


• 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 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.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
HEAT SHOCK PROTEIN 16.9B	A, B, C, D	151	Triticum aestivum	Mutation(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: 2.70 Å
• R-Value Free: 0.286 
• R-Value Work: 0.231 
• R-Value Observed: 0.231 
• Space Group: H 3 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 171.645	α = 90
b = 171.645	β = 90
c = 124.157	γ = 120

Software Package:

Software Name	Purpose
CNS	refinement
MOSFLM	data reduction
SCALA	data scaling
SnB	phasing
SHARP	phasing
SOLOMON	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2001-09-13 
• Released Date: 2001-11-29 
Deposition Author(s): Van Montfort, R.L.M., Basha, E., Friedrich, K.L., Slingsby, C., Vierling, E.

Revision History 

• Version 1.0: 2001-11-29
  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: 2017-07-05
  Changes: Refinement description