7P6U

Lon protease from Thermus Thermophilus


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.90 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 structure of the full-length Lon protease from Thermus thermophilus.

Coscia, F.Lowe, J.

(2021) FEBS Lett 595: 2691-2700

  • DOI: https://doi.org/10.1002/1873-3468.14199
  • Primary Citation of Related Structures:  
    7P6U

  • PubMed Abstract: 

    In bacteria, Lon is a large hexameric ATP-dependent protease that targets misfolded and also folded substrates, some of which are involved in cell division and survival of cellular stress. The N-terminal domain of Lon facilitates substrate recognition, but how the domains confer such activity has remained unclear. Here, we report the full-length structure of Lon protease from Thermus thermophilus at 3.9 Å resolution in a substrate-engaged state. The six N-terminal domains are arranged in three pairs, stabilized by coiled-coil segments and forming an additional channel for substrate sensing and entry into the AAA+ ring. Sequence conservation analysis and proteolysis assays confirm that this architecture is required for the degradation of both folded and unfolded substrates in bacteria.


  • Organizational Affiliation

    MRC Laboratory of Molecular Biology, Cambridge Biomedical Campus, Cambridge, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Lon protease
A, B, C, D, E
A, B, C, D, E, F
795Thermus thermophilusMutation(s): 0 
Gene Names: lonlon_1TthHC11_08200
EC: 3.4.21.53
UniProt
Find proteins for Q72KS4 (Thermus thermophilus (strain ATCC BAA-163 / DSM 7039 / HB27))
Explore Q72KS4 
Go to UniProtKB:  Q72KS4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ72KS4
Sequence Annotations
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  • Reference Sequence

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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)G [auth S]7Thermus thermophilusMutation(s): 0 
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Medical Research Council (MRC, United Kingdom)United KingdomU105184326
Wellcome TrustUnited Kingdom202754/Z/16/Z

Revision History  (Full details and data files)

  • Version 1.0: 2021-10-27
    Type: Initial release
  • Version 1.1: 2021-11-17
    Changes: Data collection, Database references