7VWX

CryoEM structure of football-shaped GroEL:ES2 with RuBisCO


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.60 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

Cryo-EM structures of GroEL:ES 2 with RuBisCO visualize molecular contacts of encapsulated substrates in a double-cage chaperonin.

Kim, H.Park, J.Lim, S.Jun, S.H.Jung, M.Roh, S.H.

(2022) iScience 25: 103704-103704

  • DOI: 10.1016/j.isci.2021.103704
  • Primary Citation of Related Structures:  
    7VWX

  • PubMed Abstract: 
  • The GroEL/GroES chaperonin system assists the folding of many proteins, through conformational transitions driven by ATP hydrolysis. Although structural information about bullet-shaped GroEL:ES 1 complexes has been extensively reported, the substrate interactions of another functional complex, the football-shaped GroEL:ES 2 , remain elusive ...

    The GroEL/GroES chaperonin system assists the folding of many proteins, through conformational transitions driven by ATP hydrolysis. Although structural information about bullet-shaped GroEL:ES 1 complexes has been extensively reported, the substrate interactions of another functional complex, the football-shaped GroEL:ES 2 , remain elusive. Here, we report single-particle cryo-EM structures of reconstituted wild-type GroEL:ES 2 complexes with a chemically denatured substrate, ribulose-1,5-bisphosphate carboxylase oxygenase (RuBisCO). Our structures demonstrate that native-like folded RuBisCO density is captured at the lower part of the GroEL chamber and that GroEL's bulky hydrophobic residues Phe281, Tyr360, and Phe44 contribute to direct contact with RuBisCO density. In addition, our analysis found that GroEL:ES 2 can be occupied by two substrates simultaneously, one in each chamber. Together, these observations provide insights to the football-shaped GroEL:ES 2 complex as a functional state to assist the substrate folding with visualization.


    Organizational Affiliation

    School of Biology, Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, Republic of Korea.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Co-chaperonin GroES97Escherichia coli K-12Mutation(s): 0 
Gene Names: groESgroSmopBb4142JW4102
UniProt
Find proteins for P0A6F9 (Escherichia coli (strain K12))
Explore P0A6F9 
Go to UniProtKB:  P0A6F9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0A6F9
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Chaperonin GroEL548Escherichia coli K-12Mutation(s): 0 
Gene Names: groELgroLmopAb4143JW4103
EC: 5.6.1.7
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
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Ribulose bisphosphate carboxylaseCA [auth a]466Rhodospirillum rubrum ATCC 11170Mutation(s): 0 
Gene Names: cbbMRru_A2400
EC: 4.1.1.39
UniProt
Find proteins for Q2RRP5 (Rhodospirillum rubrum (strain ATCC 11170 / ATH 1.1.1 / DSM 467 / LMG 4362 / NCIMB 8255 / S1))
Explore Q2RRP5 
Go to UniProtKB:  Q2RRP5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ2RRP5
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.60 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Research Foundation (NRF, Korea)Korea, Republic Of--

Revision History  (Full details and data files)

  • Version 1.0: 2022-01-12
    Type: Initial release
  • Version 1.1: 2022-02-16
    Changes: Database references