3JC8

Architectural model of the type IVa pilus machine in a piliated state


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Aggregation State: PARTICLE 
  • Reconstruction Method: TOMOGRAPHY 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Architecture of the type IVa pilus machine.

Chang, Y.W.Rettberg, L.A.Treuner-Lange, A.Iwasa, J.Sgaard-Andersen, L.Jensen, G.J.

(2016) Science 351: aad2001-aad2001

  • DOI: 10.1126/science.aad2001
  • Primary Citation of Related Structures:  
    3JC8, 3JC9

  • PubMed Abstract: 
  • Type IVa pili are filamentous cell surface structures observed in many bacteria. They pull cells forward by extending, adhering to surfaces, and then retracting. We used cryo-electron tomography of intact Myxococcus xanthus cells to visualize type IVa pili and the protein machine that assembles and retracts them (the type IVa pilus machine, or T4PM) in situ, in both the piliated and nonpiliated states, at a resolution of 3 to 4 nanometers ...

    Type IVa pili are filamentous cell surface structures observed in many bacteria. They pull cells forward by extending, adhering to surfaces, and then retracting. We used cryo-electron tomography of intact Myxococcus xanthus cells to visualize type IVa pili and the protein machine that assembles and retracts them (the type IVa pilus machine, or T4PM) in situ, in both the piliated and nonpiliated states, at a resolution of 3 to 4 nanometers. We found that T4PM comprises an outer membrane pore, four interconnected ring structures in the periplasm and cytoplasm, a cytoplasmic disc and dome, and a periplasmic stem. By systematically imaging mutants lacking defined T4PM proteins or with individual proteins fused to tags, we mapped the locations of all 10 T4PM core components and the minor pilins, thereby providing insights into pilus assembly, structure, and function.


    Organizational Affiliation

    California Institute of Technology, Pasadena, CA 91125, USA. Howard Hughes Medical Institute, Pasadena, CA 91125, USA. jensen@caltech.edu.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PilAA1A2A3A4A5A6A7A8A1A2A3A4A5A6A7A8A9AaAbAcAdAeAfAgAhAiAjAkAlAmAnAoApAqArAsAtAuAvAwAxAyAz
158Myxococcus xanthus DK 1622Mutation(s): 0 
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Type IV-A pilus assembly ATPase PilB BaBbBcBdBeBf566Myxococcus xanthus DK 1622Mutation(s): 0 
Gene Names: pilBMXAN_5788
Find proteins for Q1D098 (Myxococcus xanthus (strain DK 1622))
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Go to UniProtKB:  Q1D098
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Type 4 fimbrial assembly protein PilC CaCb417Myxococcus xanthus DK 1622Mutation(s): 0 
Gene Names: pilCMXAN_5786
Find proteins for Q1D0A0 (Myxococcus xanthus (strain DK 1622))
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Go to UniProtKB:  Q1D0A0
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
PilNNaNbNcNdNeNfNgNhNaNbNcNdNeNfNgNhNiNjNkNl
225Myxococcus xanthus DK 1622Mutation(s): 0 
Gene Names: pilNMXAN_5775
Find proteins for Q306N5 (Myxococcus xanthus (strain DK 1622))
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
PilOOaObOcOdOeOfOgOhOaObOcOdOeOfOgOhOiOjOkOl
205Myxococcus xanthus DK 1622Mutation(s): 0 
Gene Names: pilOMXAN_5774
Find proteins for Q306N4 (Myxococcus xanthus (strain DK 1622))
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Type IV pilus biogenesis protein PilMMaMbMcMdMeMfMgMhMaMbMcMdMeMfMgMhMiMjMkMl
395Myxococcus xanthus DK 1622Mutation(s): 0 
Gene Names: pilMMXAN_5776
Find proteins for Q1D0B0 (Myxococcus xanthus (strain DK 1622))
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
PilQQaQbQcQdQeQfQgQhQaQbQcQdQeQfQgQhQiQjQkQl
901Myxococcus xanthus DK 1622Mutation(s): 0 
Gene Names: pilQ
Find proteins for Q9ZFG1 (Myxococcus xanthus (strain DK 1622))
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
PilPPaPbPcPdPePfPgPhPaPbPcPdPePfPgPhPiPjPkPl
172Myxococcus xanthus DK 1622Mutation(s): 0 
Gene Names: pilP
Find proteins for Q306N3 (Myxococcus xanthus (strain DK 1622))
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
LysM domain proteinTaTbTcTdTeTfTgThTaTbTcTdTeTfTgThTiTjTkTl
411Myxococcus xanthus DK 1622Mutation(s): 0 
Gene Names: MXAN_3001
Find proteins for Q1D813 (Myxococcus xanthus (strain DK 1622))
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Go to UniProtKB:  Q1D813
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MEA
Query on MEA
A1,A2,A3,A4,A5,A6,A7,A8,A9,Aa,Ab,Ac,Ad,Ae,Af,Ag,Ah,Ai,Aj,Ak,Al,Am,An,Ao,Ap,Aq,Ar,As,At,Au,Av,Aw,Ax,Ay,AzL-PEPTIDE LINKINGC10 H13 N O2PHE
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Aggregation State: PARTICLE 
  • Reconstruction Method: TOMOGRAPHY 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-03-16
    Type: Initial release
  • Version 1.1: 2016-03-23
    Changes: Database references
  • Version 1.2: 2018-07-18
    Changes: Data collection