5W0S

GroEL using cryoEM


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.5 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

Subunit conformational variation within individual GroEL oligomers resolved by Cryo-EM.

Roh, S.H.Hryc, C.F.Jeong, H.H.Fei, X.Jakana, J.Lorimer, G.H.Chiu, W.

(2017) Proc. Natl. Acad. Sci. U.S.A. 114: 8259-8264

  • DOI: 10.1073/pnas.1704725114

  • PubMed Abstract: 
  • Single-particle electron cryo-microscopy (cryo-EM) is an emerging tool for resolving structures of conformationally heterogeneous particles; however, each structure is derived from an average of many particles with presumed identical conformations. W ...

    Single-particle electron cryo-microscopy (cryo-EM) is an emerging tool for resolving structures of conformationally heterogeneous particles; however, each structure is derived from an average of many particles with presumed identical conformations. We used a 3.5-Å cryo-EM reconstruction with imposed D7 symmetry to further analyze structural heterogeneity among chemically identical subunits in each GroEL oligomer. Focused classification of the 14 subunits in each oligomer revealed three dominant classes of subunit conformations. Each class resembled a distinct GroEL crystal structure in the Protein Data Bank. The conformational differences stem from the orientations of the apical domain. We mapped each conformation class to its subunit locations within each GroEL oligomer in our dataset. The spatial distributions of each conformation class differed among oligomers, and most oligomers contained 10-12 subunits of the three dominant conformation classes. Adjacent subunits were found to more likely assume the same conformation class, suggesting correlation among subunits in the oligomer. This study demonstrates the utility of cryo-EM in revealing structure dynamics within a single protein oligomer.


    Organizational Affiliation

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




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
524Escherichia coli (strain K12)Gene Names: groL (groEL, mopA)
Find proteins for P0A6F5 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A6F5
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.5 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2017-05-31 
  • Released Date: 2017-08-09 
  • Deposition Author(s): Roh, S.H., Chiu, W.

Funding OrganizationCountryGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesP41GM103832

Revision History 

  • Version 1.0: 2017-08-09
    Type: Initial release
  • Version 1.1: 2017-08-16
    Type: Database references, Refinement description
  • Version 1.2: 2017-09-20
    Type: Author supporting evidence