2CGT

GROEL-ADP-gp31 COMPLEX


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

An Expanded Protein Folding Cage in the Groel-Gp31 Complex.

Clare, D.K.Bakkes, P.J.Van Heerikhuizen, H.Van Der Vies, S.M.Saibil, H.R.

(2006) J Mol Biol 358: 905

  • DOI: https://doi.org/10.1016/j.jmb.2006.02.033
  • Primary Citation of Related Structures:  
    2CGT

  • PubMed Abstract: 

    Bacteriophage T4 produces a GroES analogue, gp31, which cooperates with the Escherichia coli GroEL to fold its major coat protein gp23. We have used cryo-electron microscopy and image processing to obtain three-dimensional structures of the E.coli chaperonin GroEL complexed with gp31, in the presence of both ATP and ADP. The GroEL-gp31-ADP map has a resolution of 8.2 A, which allows accurate fitting of the GroEL and gp31 crystal structures. Comparison of this fitted structure with that of the GroEL-GroES-ADP structure previously determined by cryo-electron microscopy shows that the folding cage is expanded. The enlarged volume for folding is consistent with the size of the bacteriophage coat protein gp23, which is the major substrate of GroEL-gp31 chaperonin complex. At 56 kDa, gp23 is close to the maximum size limit of a polypeptide that is thought to fit inside the GroEL-GroES folding cage.


  • Organizational Affiliation

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


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
60 KDA GROEL
A, B, C, D, E
A, B, C, D, E, F, G, H, I, J, K, L, M, N
547Escherichia coliMutation(s): 0 
UniProt
Find proteins for P0A6F5 (Escherichia coli (strain K12))
Explore P0A6F5 
Go to UniProtKB:  P0A6F5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0A6F5
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
CAPSID ASSEMBLY PROTEIN GP31
O, P, Q, R, S
O, P, Q, R, S, T, U
111Tequatrovirus T4Mutation(s): 0 
UniProt
Find proteins for P17313 (Enterobacteria phage T4)
Explore P17313 
Go to UniProtKB:  P17313
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP17313
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONIMAGIC
RECONSTRUCTIONSPIDER

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-03-29
    Type: Initial release
  • Version 1.1: 2013-08-07
    Changes: Derived calculations, Other, Source and taxonomy, Structure summary, Version format compliance
  • Version 1.2: 2017-08-30
    Changes: Data collection, Refinement description
  • Version 1.3: 2019-10-23
    Changes: Data collection, Other