1RY1

Structure of the signal recognition particle interacting with the elongation-arrested ribosome


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 12.0 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

Structure of the signal recognition particle interacting with the elongation-arrested ribosome

Halic, M.Becker, T.Pool, M.R.Spahn, C.M.Grassucci, R.A.Frank, J.Beckmann, R.

(2004) Nature 427: 808-814

  • DOI: 10.1038/nature02342
  • Primary Citation of Related Structures:  
    1RY1

  • PubMed Abstract: 
  • Cotranslational translocation of proteins across or into membranes is a vital process in all kingdoms of life. It requires that the translating ribosome be targeted to the membrane by the signal recognition particle (SRP), an evolutionarily conserved ribonucleoprotein particle ...

    Cotranslational translocation of proteins across or into membranes is a vital process in all kingdoms of life. It requires that the translating ribosome be targeted to the membrane by the signal recognition particle (SRP), an evolutionarily conserved ribonucleoprotein particle. SRP recognizes signal sequences of nascent protein chains emerging from the ribosome. Subsequent binding of SRP leads to a pause in peptide elongation and to the ribosome docking to the membrane-bound SRP receptor. Here we present the structure of a targeting complex consisting of mammalian SRP bound to an active 80S ribosome carrying a signal sequence. This structure, solved to 12 A by cryo-electron microscopy, enables us to generate a molecular model of SRP in its functional conformation. The model shows how the S domain of SRP contacts the large ribosomal subunit at the nascent chain exit site to bind the signal sequence, and that the Alu domain reaches into the elongation-factor-binding site of the ribosome, explaining its elongation arrest activity.


    Organizational Affiliation

    Institute of Biochemistry, Charité, University Medical School, Humboldt University of Berlin, Monbijoustrasse 2, 10117 Berlin, Germany.



Macromolecules

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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
SRP9I [auth C]85Canis lupus familiarisMutation(s): 0 
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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetailsImage
SRP14J [auth D]106Canis lupus familiarisMutation(s): 0 
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Entity ID: 11
MoleculeChainsSequence LengthOrganismDetailsImage
SRP19K [auth B]108Canis lupus familiarisMutation(s): 0 
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Entity ID: 12
MoleculeChainsSequence LengthOrganismDetailsImage
SRP54NGL [auth U]296Canis lupus familiarisMutation(s): 0 
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Entity ID: 13
MoleculeChainsSequence LengthOrganismDetailsImage
SRP54MM [auth W]109Canis lupus familiarisMutation(s): 0 
EC: 3.6.5
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Entity ID: 14
MoleculeChainsSequence LengthOrganismDetailsImage
signal sequence peptideN [auth S]18Triticum aestivumMutation(s): 0 
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Entity ID: 1
MoleculeChainsLengthOrganismImage
SRP Alu domainA [auth E]50Canis lupus familiaris
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Entity ID: 2
MoleculeChainsLengthOrganismImage
SRP S domainB [auth A]128Canis lupus familiaris
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Entity ID: 3
MoleculeChainsLengthOrganismImage
SRP RNAC [auth M]27Canis lupus familiaris
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Entity ID: 4
MoleculeChainsLengthOrganismImage
SRP RNAD [auth N]31Canis lupus familiaris
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Entity ID: 5
MoleculeChainsLengthOrganismImage
SRP RNAE [auth O]24Canis lupus familiaris
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  • Entity ID: 6
    MoleculeChainsLengthOrganismImage
    SRP RNAF [auth P]20Canis lupus familiaris
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    • Entity ID: 7
      MoleculeChainsLengthOrganismImage
      SRP RNAG [auth Q]12Canis lupus familiaris
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      • Entity ID: 8
        MoleculeChainsLengthOrganismImage
        SRP RNAH [auth R]12Canis lupus familiaris
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        Experimental Data & Validation

        Experimental Data

        • Method: ELECTRON MICROSCOPY
        • Resolution: 12.0 Å
        • Aggregation State: PARTICLE 
        • Reconstruction Method: SINGLE PARTICLE 

        Structure Validation

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        Entry History 

        Deposition Data

        Revision History  (Full details and data files)

        • Version 1.0: 2004-04-20
          Type: Initial release
        • Version 1.1: 2007-10-16
          Changes: Version format compliance
        • Version 1.2: 2011-07-13
          Changes: Version format compliance
        • Version 1.3: 2018-04-18
          Changes: Data collection, Database references, Source and taxonomy, Structure summary
        • Version 1.4: 2018-07-18
          Changes: Data collection