6W8X

Cryo-EM of the S. solfataricus pilus


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The structures of two archaeal type IV pili illuminate evolutionary relationships.

Wang, F.Baquero, D.P.Su, Z.Beltran, L.C.Prangishvili, D.Krupovic, M.Egelman, E.H.

(2020) Nat Commun 11: 3424-3424

  • DOI: https://doi.org/10.1038/s41467-020-17268-4
  • Primary Citation of Related Structures:  
    6W8U, 6W8X

  • PubMed Abstract: 

    We have determined the cryo-electron microscopic (cryo-EM) structures of two archaeal type IV pili (T4P), from Pyrobaculum arsenaticum and Saccharolobus solfataricus, at 3.8 Å and 3.4 Å resolution, respectively. This triples the number of high resolution archaeal T4P structures, and allows us to pinpoint the evolutionary divergence of bacterial T4P, archaeal T4P and archaeal flagellar filaments. We suggest that extensive glycosylation previously observed in T4P of Sulfolobus islandicus is a response to an acidic environment, as at even higher temperatures in a neutral environment much less glycosylation is present for Pyrobaculum than for Sulfolobus and Saccharolobus pili. Consequently, the Pyrobaculum filaments do not display the remarkable stability of the Sulfolobus filaments in vitro. We identify the Saccharolobus and Pyrobaculum T4P as host receptors recognized by rudivirus SSRV1 and tristromavirus PFV2, respectively. Our results illuminate the evolutionary relationships among bacterial and archaeal T4P filaments and provide insights into archaeal virus-host interactions.


  • Organizational Affiliation

    Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA, 22908, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
pilin132Saccharolobus solfataricusMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for A0A157T322 (Saccharolobus solfataricus)
Explore A0A157T322 
Go to UniProtKB:  A0A157T322
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A157T322
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR35GM122510

Revision History  (Full details and data files)

  • Version 1.0: 2020-07-08
    Type: Initial release
  • Version 1.1: 2021-10-06
    Changes: Database references
  • Version 1.2: 2024-05-29
    Changes: Data collection