6J0N

Cryo-EM Structure of an Extracellular Contractile Injection System, baseplate in extended state, refined in C6 symmetry


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 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 and Assembly of an Extracellular Contractile Injection System.

Jiang, F.Li, N.Wang, X.Cheng, J.Huang, Y.Yang, Y.Yang, J.Cai, B.Wang, Y.P.Jin, Q.Gao, N.

(2019) Cell 177: 370-383.e15

  • DOI: 10.1016/j.cell.2019.02.020
  • Primary Citation of Related Structures:  
    6J0M, 6J0N, 6J0F, 6J0C, 6J0B

  • PubMed Abstract: 
  • Contractile injection systems (CISs) are cell-puncturing nanodevices that share ancestry with contractile tail bacteriophages. Photorhabdus virulence cassette (PVC) represents one group of extracellular CISs that are present in both bacteria and arch ...

    Contractile injection systems (CISs) are cell-puncturing nanodevices that share ancestry with contractile tail bacteriophages. Photorhabdus virulence cassette (PVC) represents one group of extracellular CISs that are present in both bacteria and archaea. Here, we report the cryo-EM structure of an intact PVC from P. asymbiotica. This over 10-MDa device resembles a simplified T4 phage tail, containing a hexagonal baseplate complex with six fibers and a capped 117-nanometer sheath-tube trunk. One distinct feature of the PVC is the presence of three variants for both tube and sheath proteins, indicating a functional specialization of them during evolution. The terminal hexameric cap docks onto the topmost layer of the inner tube and locks the outer sheath in pre-contraction state with six stretching arms. Our results on the PVC provide a framework for understanding the general mechanism of widespread CISs and pave the way for using them as delivery tools in biological or therapeutic applications.


    Organizational Affiliation

    State Key Laboratory of Membrane Biology, Peking-Tsinghua Center for Life Sciences, School of Life Sciences, Peking University, Beijing, PRC. Electronic address: gaon@pku.edu.cn.



Macromolecules
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Pvc4VWXYZa410Photorhabdus asymbiotica subsp. asymbiotica ATCC 43949Mutation(s): 0 
Gene Names: PAU_03350PA-RVA20-21-0168
Find proteins for B6VNP1 (Photorhabdus asymbiotica subsp. asymbiotica (strain ATCC 43949 / 3105-77))
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Go to UniProtKB:  B6VNP1
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Pvc9DEFGHI140Photorhabdus asymbiotica subsp. asymbiotica ATCC 43949Mutation(s): 0 
Gene Names: PAU_03345PA-RVA20-21-0163
Find proteins for B6VNN6 (Photorhabdus asymbiotica subsp. asymbiotica (strain ATCC 43949 / 3105-77))
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Pvc11JKLMNO728Photorhabdus asymbiotica subsp. asymbiotica ATCC 43949Mutation(s): 0 
Gene Names: PAU_03343PA-RVA20-21-0161
Find proteins for B6VNN4 (Photorhabdus asymbiotica subsp. asymbiotica (strain ATCC 43949 / 3105-77))
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Pvc12PQRSTU950Photorhabdus asymbiotica subsp. asymbiotica ATCC 43949Mutation(s): 0 
Gene Names: PAU_03342PA-RVA20-21-0160
Find proteins for B6VNN3 (Photorhabdus asymbiotica subsp. asymbiotica (strain ATCC 43949 / 3105-77))
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Pvc7bcdefg229Photorhabdus asymbiotica subsp. asymbiotica ATCC 43949Mutation(s): 0 
Gene Names: PAU_03347PA-RVA20-21-0165
Find proteins for B6VNN8 (Photorhabdus asymbiotica subsp. asymbiotica (strain ATCC 43949 / 3105-77))
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Pvc2hijklm355Photorhabdus asymbiotica subsp. asymbiotica ATCC 43949Mutation(s): 0 
Gene Names: PAU_03352PA-RVA20-21-0170
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
Pvc5nopqrs152Photorhabdus asymbiotica subsp. asymbiotica ATCC 43949Mutation(s): 0 
Gene Names: PAU_03349PA-RVA20-21-0167
Find proteins for B6VNP0 (Photorhabdus asymbiotica subsp. asymbiotica (strain ATCC 43949 / 3105-77))
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
Pvc112345z149Photorhabdus asymbiotica subsp. asymbiotica ATCC 43949Mutation(s): 0 
Gene Names: PAU_03353PA-RVA20-21-0171
Find proteins for B6VNP4 (Photorhabdus asymbiotica subsp. asymbiotica (strain ATCC 43949 / 3105-77))
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
Pvc3tuvwxy440Photorhabdus asymbiotica subsp. asymbiotica ATCC 43949Mutation(s): 0 
Gene Names: PAU_03351PA-RVA20-21-0169
Find proteins for B6VNP2 (Photorhabdus asymbiotica subsp. asymbiotica (strain ATCC 43949 / 3105-77))
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of ChinaChina--

Revision History 

  • Version 1.0: 2019-04-10
    Type: Initial release
  • Version 1.1: 2019-04-17
    Changes: Data collection, Database references