1OEL

CONFORMATIONAL VARIABILITY IN THE REFINED STRUCTURE OF THE CHAPERONIN GROEL AT 2.8 ANGSTROM RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.227 
  • R-Value Observed: 0.227 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Conformational variability in the refined structure of the chaperonin GroEL at 2.8 A resolution.

Braig, K.Adams, P.D.Brunger, A.T.

(1995) Nat Struct Biol 2: 1083-1094

  • DOI: 10.1038/nsb1295-1083
  • Primary Citation of Related Structures:  
    1OEL

  • PubMed Abstract: 
  • Improved refinement of the crystal structure of GroEL from Escherichia coli has resulted in a complete atomic model for the first 524 residues. A new torsion-angle dynamics method and non-crystallographic symmetry restraints were used in the refineme ...

    Improved refinement of the crystal structure of GroEL from Escherichia coli has resulted in a complete atomic model for the first 524 residues. A new torsion-angle dynamics method and non-crystallographic symmetry restraints were used in the refinement. The model indicates that conformational variability exists due to rigid-body movements between the apical and intermediate domains of GroEL, resulting in deviations from strict seven-fold symmetry. The regions of the protein involved in polypeptide and GroES binding show unusually high B factors; these values may indicate mobility or discrete disorder. The variability of these regions may play a role in the ability of GroEL to bind a wide variety of substrates.


    Related Citations: 
    • The Crystal Structure of the Bacterial Chaperonin Groel at 2.8 Angstrom
      Braig, K., Otwinowski, Z., Hegde, R., Boisvert, D.C., Joachimiak, A., Horwich, A.L., Sigler, P.B.
      (1994) Nature 371: 578
    • Residues in Chaperonin Groel Required for Polypeptide Binding and Release
      Fenton, W.A., Kashi, Y., Furtak, K., Horwich, A.L.
      (1994) Nature 371: 614

    Organizational Affiliation

    Department of Genetics, Yale University, New Haven, Connecticut 06510, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GROEL (HSP60 CLASS)A, B, C, D, E, F, G547Escherichia coliMutation(s): 2 
Gene Names: groEL
Find proteins for P0A6F5 (Escherichia coli (strain K12))
Explore P0A6F5 
Go to UniProtKB:  P0A6F5
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.227 
  • R-Value Observed: 0.227 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 178.38α = 90
b = 204.98β = 90
c = 280.98γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1996-04-03
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance