3IZI

Mm-cpn rls with ATP


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.70 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

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, 3IZJ, 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 describe the fate of the substrate during the nucleotide cycle of group II chaperonins ...

    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:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Chaperonin
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P
513Methanococcus maripaludisMutation(s): 4 
Gene Names: hsp60MMP1515
UniProt
Find proteins for Q877G8 (Methanococcus maripaludis)
Explore Q877G8 
Go to UniProtKB:  Q877G8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ877G8
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-02-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2018-07-18
    Changes: Data collection