6EJF

Thermus thermophilus PilF ATPase (apoprotein form)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.00 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

Structural cycle of the Thermus thermophilus PilF ATPase: the powering of type IVa pilus assembly.

Collins, R.Karuppiah, V.Siebert, C.A.Dajani, R.Thistlethwaite, A.Derrick, J.P.

(2018) Sci Rep 8: 14022-14022

  • DOI: https://doi.org/10.1038/s41598-018-32218-3
  • Primary Citation of Related Structures:  
    5OIU, 6EJF, 6F8L

  • PubMed Abstract: 

    Type IV pili are responsible for a diverse range of functions, including twitching motility and cell adhesion. Assembly of the pilus fiber is driven by a cytoplasmic ATPase: it interacts with an inner membrane complex of biogenesis proteins which, in turn, bind to nascent pilin subunits and mediate fiber assembly. Here we report the structural characterization of the PilF TFP assembly ATPase from Thermus thermophilus. The crystal structure of a recombinant C-terminal fragment of PilF revealed bound, unhydrolysed ATP, although the full length complex was enzymatically active. 3D reconstructions were carried out by single particle cryoelectron microscopy for full length apoprotein PilF and in complex with AMPPNP. The structure forms an hourglass-like shape, with the ATPase domains in one half and the N1 domains in the second half which, we propose, interact with the other pilus biogenesis components. Molecular models for both forms were generated: binding of AMPPNP causes an upward shift of the N1 domains towards the ATPase domains of ~8 Å. We advocate a model in which ATP hydrolysis is linked to displacement of the N1 domains which is associated with lifting pilin subunits out of the inner membrane, and provide the activation energy needed to form the pilus fiber.


  • Organizational Affiliation

    School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Oxford Road, Manchester, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Type IV pilus assembly protein PilF146Thermus thermophilus HB8Mutation(s): 0 
Gene Names: TTHA0364
UniProt
Find proteins for Q5SLC9 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore Q5SLC9 
Go to UniProtKB:  Q5SLC9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5SLC9
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Type IV pilus assembly protein PilF137Thermus thermophilus HB8Mutation(s): 0 
Gene Names: TTHA0364
UniProt
Find proteins for Q5SLC9 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore Q5SLC9 
Go to UniProtKB:  Q5SLC9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5SLC9
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Type IV pilus assembly protein PilF409Thermus thermophilus HB8Mutation(s): 0 
Gene Names: TTHA0364
UniProt
Find proteins for Q5SLC9 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore Q5SLC9 
Go to UniProtKB:  Q5SLC9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5SLC9
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.00 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: 2018-08-01
    Type: Initial release
  • Version 1.1: 2018-10-24
    Changes: Data collection, Database references