6OGD

Cryo-EM structure of YenTcA in its prepore state


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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Literature

Cryo-EM structures of the pore-forming A subunit from the Yersinia entomophaga ABC toxin.

Piper, S.J.Brillault, L.Rothnagel, R.Croll, T.I.Box, J.K.Chassagnon, I.Scherer, S.Goldie, K.N.Jones, S.A.Schepers, F.Hartley-Tassell, L.Ve, T.Busby, J.N.Dalziel, J.E.Lott, J.S.Hankamer, B.Stahlberg, H.Hurst, M.R.H.Landsberg, M.J.

(2019) Nat Commun 10: 1952-1952

  • DOI: 10.1038/s41467-019-09890-8
  • Primary Citation of Related Structures:  
    6OGD

  • PubMed Abstract: 
  • ABC toxins are pore-forming virulence factors produced by pathogenic bacteria. YenTcA is the pore-forming and membrane binding A subunit of the ABC toxin YenTc, produced by the insect pathogen Yersinia entomophaga. Here we present cryo-EM structures of YenTcA, purified from the native source ...

    ABC toxins are pore-forming virulence factors produced by pathogenic bacteria. YenTcA is the pore-forming and membrane binding A subunit of the ABC toxin YenTc, produced by the insect pathogen Yersinia entomophaga. Here we present cryo-EM structures of YenTcA, purified from the native source. The soluble pre-pore structure, determined at an average resolution of 4.4 Å, reveals a pentameric assembly that in contrast to other characterised ABC toxins is formed by two TcA-like proteins (YenA1 and YenA2) and decorated by two endochitinases (Chi1 and Chi2). We also identify conformational changes that accompany membrane pore formation by visualising YenTcA inserted into liposomes. A clear outward rotation of the Chi1 subunits allows for access of the protruding translocation pore to the membrane. Our results highlight structural and functional diversity within the ABC toxin subfamily, explaining how different ABC toxins are capable of recognising diverse hosts.


    Organizational Affiliation

    Institute for Molecular Bioscience, The University of Queensland, St Lucia Queensland, 4072, Australia. m.landsberg@uq.edu.au.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Toxin subunit YenA1A, D, G, J, M1164Yersinia entomophagaMutation(s): 0 
Gene Names: yenA1
UniProt
Find proteins for B6A877 (Yersinia entomophaga)
Explore B6A877 
Go to UniProtKB:  B6A877
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Toxin subunit YenA2B, E, H, K, N1364Yersinia entomophagaMutation(s): 0 
Gene Names: yenA2
UniProt
Find proteins for B6A878 (Yersinia entomophaga)
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Go to UniProtKB:  B6A878
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Chitinase 2C, F, I, L, O633Yersinia entomophagaMutation(s): 0 
Gene Names: chi2
EC: 3.2.1.14
UniProt
Find proteins for B6A879 (Yersinia entomophaga)
Explore B6A879 
Go to UniProtKB:  B6A879
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Australian Research Council (ARC)AustraliaDP170104484
Australian Research Council (ARC)AustraliaDP160101018
Royal Society of New ZealandNew Zealand14-UOA-146
Foundation for Science and TechnologyNew ZealandC10X0804

Revision History  (Full details and data files)

  • Version 1.0: 2019-05-08
    Type: Initial release
  • Version 1.1: 2020-01-15
    Changes: Author supporting evidence