5GAD

RNC-SRP-SR complex early state


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Structures of the E. coli translating ribosome with SRP and its receptor and with the translocon.

Jomaa, A.Boehringer, D.Leibundgut, M.Ban, N.

(2016) Nat Commun 7: 10471-10471

  • DOI: 10.1038/ncomms10471
  • Primary Citation of Related Structures:  
    5GAH, 5GAG, 5GAD, 5GAF, 5GAE

  • PubMed Abstract: 
  • Co-translational protein targeting to membranes is a universally conserved process. Central steps include cargo recognition by the signal recognition particle and handover to the Sec translocon. Here we present snapshots of key co-translational-targe ...

    Co-translational protein targeting to membranes is a universally conserved process. Central steps include cargo recognition by the signal recognition particle and handover to the Sec translocon. Here we present snapshots of key co-translational-targeting complexes solved by cryo-electron microscopy at near-atomic resolution, establishing the molecular contacts between the Escherichia coli translating ribosome, the signal recognition particle and the translocon. Our results reveal the conformational changes that regulate the latching of the signal sequence, the release of the heterodimeric domains of the signal recognition particle and its receptor, and the handover of the signal sequence to the translocon. We also observe that the signal recognition particle and the translocon insert-specific structural elements into the ribosomal tunnel to remodel it, possibly to sense nascent chains. Our work provides structural evidence for a conformational state of the signal recognition particle and its receptor primed for translocon binding to the ribosome-nascent chain complex.


    Organizational Affiliation

    Department of Biology, Institute of Molecular Biology and Biophysics, Otto-Stern-Weg 5, ETH Zurich CH-8093, Switzerland.



Macromolecules

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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L2C273Escherichia coliMutation(s): 0 
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Entity ID: 6
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50S ribosomal protein L3D209Escherichia coliMutation(s): 0 
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Entity ID: 7
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50S ribosomal protein L4E201Escherichia coliMutation(s): 0 
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Entity ID: 8
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50S ribosomal protein L5F179Escherichia coliMutation(s): 0 
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Entity ID: 9
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50S ribosomal protein L6G177Escherichia coliMutation(s): 0 
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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L9H149Escherichia coliMutation(s): 0 
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Entity ID: 11
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50S ribosomal protein L10I165Escherichia coliMutation(s): 0 
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Entity ID: 12
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50S ribosomal protein L11J142Escherichia coliMutation(s): 0 
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Entity ID: 13
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50S ribosomal protein L13K142Escherichia coliMutation(s): 0 
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Entity ID: 14
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50S ribosomal protein L14L123Escherichia coliMutation(s): 0 
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Entity ID: 15
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50S ribosomal protein L15M144Escherichia coliMutation(s): 0 
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Entity ID: 16
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50S ribosomal protein L16N136Escherichia coliMutation(s): 0 
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Entity ID: 17
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50S ribosomal protein L17O127Escherichia coliMutation(s): 0 
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Entity ID: 18
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50S ribosomal protein L18P117Escherichia coliMutation(s): 0 
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Entity ID: 19
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50S ribosomal protein L19Q115Escherichia coliMutation(s): 0 
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Entity ID: 20
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50S ribosomal protein L20R118Escherichia coliMutation(s): 0 
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Entity ID: 21
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50S ribosomal protein L21S103Escherichia coliMutation(s): 0 
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Entity ID: 22
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50S ribosomal protein L22T110Escherichia coliMutation(s): 0 
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Entity ID: 23
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50S ribosomal protein L23U100Escherichia coliMutation(s): 0 
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Entity ID: 24
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50S ribosomal protein L24V104Escherichia coliMutation(s): 0 
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Entity ID: 25
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50S ribosomal protein L25W94Escherichia coliMutation(s): 0 
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Entity ID: 26
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50S ribosomal protein L27X85Escherichia coliMutation(s): 0 
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Entity ID: 27
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50S ribosomal protein L28Y78Escherichia coliMutation(s): 0 
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Entity ID: 28
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50S ribosomal protein L29Z63Escherichia coliMutation(s): 0 
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Entity ID: 29
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50S ribosomal protein L30a59Escherichia coliMutation(s): 0 
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Entity ID: 30
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50S ribosomal protein L32b57Escherichia coliMutation(s): 0 
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Entity ID: 31
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50S ribosomal protein L33c55Escherichia coliMutation(s): 0 
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Entity ID: 32
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50S ribosomal protein L34d46Escherichia coliMutation(s): 0 
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Entity ID: 33
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50S ribosomal protein L35e65Escherichia coliMutation(s): 0 
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Entity ID: 34
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50S ribosomal protein L36f38Escherichia coliMutation(s): 0 
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Entity ID: 35
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Signal recognition particle protein Ffhi450Escherichia coliMutation(s): 0 
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Entity ID: 36
MoleculeChainsSequence LengthOrganismDetailsImage
1A9L SSk18Escherichia coliMutation(s): 0 
EC: 3.1.3.1
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Entity ID: 37
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Signal recognition particle receptor FtsYl497Escherichia coliMutation(s): 0 
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Entity ID: 1
MoleculeChainsLengthOrganismImage
ESRP 4.5S RNA1113Escherichia coli
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  • Entity ID: 2
    MoleculeChainsLengthOrganismImage
    tRNA CCAend23Escherichia coli
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    Entity ID: 3
    MoleculeChainsLengthOrganismImage
    23S rRNAA2903Escherichia coli
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    Entity ID: 4
    MoleculeChainsLengthOrganismImage
    5S rRNAB120Escherichia coli
    Small Molecules
    Ligands 3 Unique
    IDChainsName / Formula / InChI Key2D Diagram3D Interactions
    GNP
    Query on GNP

    Download CCD File 
    i, l
    PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER
    C10 H17 N6 O13 P3
    UQABYHGXWYXDTK-UUOKFMHZSA-N
     Ligand Interaction
    ZN
    Query on ZN

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    f
    ZINC ION
    Zn
    PTFCDOFLOPIGGS-UHFFFAOYSA-N
     Ligand Interaction
    MG
    Query on MG

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    2, A, B, C, D, E, P, R, b, i, l
    MAGNESIUM ION
    Mg
    JLVVSXFLKOJNIY-UHFFFAOYSA-N
     Ligand Interaction
    Experimental Data & Validation

    Experimental Data

    • Method: ELECTRON MICROSCOPY
    • Resolution: 3.70 Å
    • Aggregation State: PARTICLE 
    • Reconstruction Method: SINGLE PARTICLE 

    Structure Validation

    View Full Validation Report



    Entry History 

    Deposition Data

    Revision History 

    • Version 1.0: 2016-01-27
      Type: Initial release
    • Version 1.1: 2016-02-03
      Changes: Database references
    • Version 1.2: 2017-08-30
      Changes: Data collection
    • Version 1.3: 2019-11-06
      Changes: Data collection
    • Version 1.4: 2019-12-11
      Changes: Other