3IZJ

Mm-cpn rls with ATP and AlFx


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.9 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

Dual Action of ATP Hydrolysis Couples Lid Closure to Substrate Release into the Group II Chaperonin Chamber.

Douglas, N.R.Reissmann, S.Zhang, J.Chen, B.Jakana, J.Kumar, R.Chiu, W.Frydman, J.

(2011) Cell 144: 240-252

  • DOI: 10.1016/j.cell.2010.12.017
  • Primary Citation of Related Structures:  3IZH, 3IZI, 3IZK, 3IZL, 3IZM, 3IZN

  • PubMed Abstract: 
  • Group II chaperonins are ATP-dependent ring-shaped complexes that bind nonnative polypeptides and facilitate protein folding in archaea and eukaryotes. A built-in lid encapsulates substrate proteins within the central chaperonin chamber. Here, we des ...

    Group II chaperonins are ATP-dependent ring-shaped complexes that bind nonnative polypeptides and facilitate protein folding in archaea and eukaryotes. A built-in lid encapsulates substrate proteins within the central chaperonin chamber. Here, we describe the fate of the substrate during the nucleotide cycle of group II chaperonins. The chaperonin substrate-binding sites are exposed, and the lid is open in both the ATP-free and ATP-bound prehydrolysis states. ATP hydrolysis has a dual function in the folding cycle, triggering both lid closure and substrate release into the central chamber. Notably, substrate release can occur in the absence of a lid, and lid closure can occur without substrate release. However, productive folding requires both events, so that the polypeptide is released into the confined space of the closed chamber where it folds. Our results show that ATP hydrolysis coordinates the structural and functional determinants that trigger productive folding.


    Organizational Affiliation

    Department of Biology, Stanford University, Stanford, CA 94305-5020, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Chaperonin
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P
513Methanococcus maripaludisN/A
Find proteins for Q877G8 (Methanococcus maripaludis)
Go to UniProtKB:  Q877G8
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.9 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: 2011-02-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance