5OJQ

The modeled structure of of wild type extended type VI secretion system sheath/tube complex in vibrio cholerae based on cryo-EM reconstruction of the non-contractile sheath/tube complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.70 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Cryo-EM structure of the extended type VI secretion system sheath-tube complex.

Wang, J.Brackmann, M.Castano-Diez, D.Kudryashev, M.Goldie, K.N.Maier, T.Stahlberg, H.Basler, M.

(2017) Nat Microbiol 2: 1507-1512

  • DOI: 10.1038/s41564-017-0020-7
  • Primary Citation of Related Structures:  
    5MXN, 5MYU, 5OJQ

  • PubMed Abstract: 
  • The bacterial type VI secretion system (T6SS) uses contraction of a long sheath to quickly thrust a tube with associated effectors across membranes of eukaryotic and bacterial cells 1-5 . Only limited structural information is available about the inherently unstable precontraction state of the T6SS ...

    The bacterial type VI secretion system (T6SS) uses contraction of a long sheath to quickly thrust a tube with associated effectors across membranes of eukaryotic and bacterial cells 1-5 . Only limited structural information is available about the inherently unstable precontraction state of the T6SS. Here, we obtain a 3.7 Å resolution structure of a non-contractile sheath-tube complex using cryo-electron microscopy and show that it resembles the extended T6SS inside Vibrio cholerae cells. We build a pseudo-atomic model of the complete sheath-tube assembly, which provides a mechanistic understanding of coupling sheath contraction with pushing and rotating the inner tube for efficient target membrane penetration. Our data further show that sheath contraction exposes a buried recognition domain to specifically trigger the disassembly and recycling of the T6SS sheath by the cognate ATP-dependent unfoldase ClpV.


    Organizational Affiliation

    Focal Area Infection Biology, Biozentrum, University of Basel, Klingelbergstrasse 50/70, CH-4056, Basel, Switzerland. marek.basler@unibas.ch.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Haemolysin co-regulated protein170Vibrio choleraeMutation(s): 0 
Gene Names: hcphcpAEYB64_08015EYB64_09885F0315_18490FLM12_00410FLM12_14460FXE67_06865
UniProt
Find proteins for P72350 (Vibrio cholerae)
Explore P72350 
Go to UniProtKB:  P72350
Entity Groups  
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UniProt GroupP72350
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Type VI secretion protein473Vibrio choleraeMutation(s): 0 
UniProt
Find proteins for Q9KN57 (Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961))
Explore Q9KN57 
Go to UniProtKB:  Q9KN57
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UniProt GroupQ9KN57
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
VipA155Vibrio choleraeMutation(s): 0 
UniProt
Find proteins for Q9KN58 (Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961))
Explore Q9KN58 
Go to UniProtKB:  Q9KN58
Entity Groups  
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UniProt GroupQ9KN58
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.70 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: HELICAL 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Swiss National Science FoundationSwitzerland31003A_159525

Revision History  (Full details and data files)

  • Version 1.0: 2017-08-09
    Type: Initial release
  • Version 1.1: 2018-10-03
    Changes: Advisory, Data collection, Derived calculations, Other
  • Version 1.2: 2018-10-24
    Changes: Data collection, Database references