2CGT

GROEL-ADP-gp31 COMPLEX


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.2 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 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: 10.1016/j.jmb.2006.02.033

  • 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 ch ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
60 KDA GROEL
A, B, C, D, E, F, G, H, I, J, K, L, M, N
547Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: groL (groEL, mopA)
Find proteins for P0A6F5 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A6F5
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
CAPSID ASSEMBLY PROTEIN GP31
O, P, Q, R, S, T, U
111Enterobacteria phage T4Mutation(s): 0 
Gene Names: 31
Find proteins for P17313 (Enterobacteria phage T4)
Go to UniProtKB:  P17313
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.2 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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