2GO5

Structure of signal recognition particle receptor (SR) in complex with signal recognition particle (SRP) and ribosome nascent chain complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Signal Recognition Particle Receptor Exposes the Ribosomal Translocon Binding Site

Halic, M.Gartmann, M.Schlenker, O.Mielke, T.Pool, M.R.Sinning, I.Beckmann, R.

(2006) Science 312: 745-747

  • DOI: 10.1126/science.1124864
  • Primary Citation of Related Structures:  
    2GO5

  • PubMed Abstract: 
  • Signal sequences of secretory and membrane proteins are recognized by the signal recognition particle (SRP) as they emerge from the ribosome. This results in their targeting to the membrane by docking with the SRP receptor, which facilitates transfer of the ribosome to the translocon ...

    Signal sequences of secretory and membrane proteins are recognized by the signal recognition particle (SRP) as they emerge from the ribosome. This results in their targeting to the membrane by docking with the SRP receptor, which facilitates transfer of the ribosome to the translocon. Here, we present the 8 angstrom cryo-electron microscopy structure of a "docking complex" consisting of a SRP-bound 80S ribosome and the SRP receptor. Interaction of the SRP receptor with both SRP and the ribosome rearranged the S domain of SRP such that a ribosomal binding site for the translocon, the L23e/L35 site, became exposed, whereas Alu domain-mediated elongation arrest persisted.


    Organizational Affiliation

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



Macromolecules

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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Signal recognition particle 19 kDa protein (SRP19)C [auth B]108Canis sp.Mutation(s): 0 
Find proteins for Q5RBR1 (Pongo abelii)
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Signal recognition particle 54 kDa protein (SRP54)D [auth W]109Canis sp.Mutation(s): 0 
EC: 3.6.5
Find proteins for P61010 (Canis lupus familiaris)
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  • Reference Sequence
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Signal recognition particle receptor alpha subunit (SR a)E [auth 1]185Homo sapiensMutation(s): 0 
Gene Names: SRPRASRPR
Find proteins for P08240 (Homo sapiens)
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PHAROS:  P08240
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  • Reference Sequence
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Signal recognition particle receptor beta subunit (SR b)F [auth 2]214Mus musculusMutation(s): 0 
Gene Names: Srprb
Find proteins for P47758 (Mus musculus)
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IMPC:  MGI:102964
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  • Reference Sequence
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
ribosomal protein L35G [auth 5]124Triticum sp.Mutation(s): 0 
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  • Reference Sequence
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
ribosomal protein L23H [auth 4]152Triticum sp.Mutation(s): 0 
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
ribosomal protein L31I [auth 6]123Triticum sp.Mutation(s): 0 
Find proteins for Q5XLD9 (Zea mays)
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  • Reference Sequence
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Entity ID: 1
MoleculeChainsLengthOrganismImage
SRP RNAA127Canis sp.
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Entity ID: 2
MoleculeChainsLengthOrganismImage
ribosomal RNAB [auth 9]90Triticum sp.
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.40 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: 2006-06-13
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance