3ZPZ

Visualizing GroEL-ES in the Act of Encapsulating a Non-Native Substrate Protein


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.9 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Visualizing Groel/Es in the Act of Encapsulating a Folding Protein

Chen, D.-H.Madan, D.Weaver, J.Lin, Z.Schroder, G.F.Chiu, W.Rye, H.S.

(2013) Cell 153: 1354

  • DOI: 10.1016/j.cell.2013.04.052
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The GroEL/ES chaperonin system is required for the assisted folding of many proteins. How these substrate proteins are encapsulated within the GroEL-GroES cavity is poorly understood. Using symmetry-free, single-particle cryo-electron microscopy, we ...

    The GroEL/ES chaperonin system is required for the assisted folding of many proteins. How these substrate proteins are encapsulated within the GroEL-GroES cavity is poorly understood. Using symmetry-free, single-particle cryo-electron microscopy, we have characterized a chemically modified mutant of GroEL (EL43Py) that is trapped at a normally transient stage of substrate protein encapsulation. We show that the symmetric pattern of the GroEL subunits is broken as the GroEL cis-ring apical domains reorient to accommodate the simultaneous binding of GroES and an incompletely folded substrate protein (RuBisCO). The collapsed RuBisCO folding intermediate binds to the lower segment of two apical domains, as well as to the normally unstructured GroEL C-terminal tails. A comparative structural analysis suggests that the allosteric transitions leading to substrate protein release and folding involve concerted shifts of GroES and the GroEL apical domains and C-terminal tails.


    Organizational Affiliation

    Verna and Marrs McLean Department of Biochemistry and Molecular Biology, National Center for Macromolecular Imaging, Baylor College of Medicine, Houston, TX 77030, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
60 KDA CHAPERONIN
A, B, C, D, E, F, G, H, I, J, K, L, M, N
526Escherichia 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
10 KDA CHAPERONIN
O, P, Q, R, S, T, U
97Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: groS (groES, mopB)
Find proteins for P0A6F9 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A6F9
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download SDF File 
Download CCD File 
A, B, C, D, E, F, G
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, B, C, D, E, F, G
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.9 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: 2013-06-19
    Type: Initial release
  • Version 1.1: 2017-08-23
    Type: Data collection, Refinement description