2WW9

Cryo-EM structure of the active yeast Ssh1 complex bound to the yeast 80S ribosome


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.60 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report



Literature

Structure of Monomeric Yeast and Mammalian Sec61 Complexes Interacting with the Translating Ribosome.

Becker, T.Bhushan, S.Jarasch, A.Armache, J.P.Funes, S.Jossinet, F.Gumbart, J.Mielke, T.Berninghausen, O.Schulten, K.Westhof, E.Gilmore, R.Mandon, E.Beckmann, R.

(2009) Science 326: 1369

  • DOI: 10.1126/science.1178535
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The trimeric Sec61/SecY complex is a protein-conducting channel (PCC) for secretory and membrane proteins. Although Sec complexes can form oligomers, it has been suggested that a single copy may serve as an active PCC. We determined subnanometer-reso ...

    The trimeric Sec61/SecY complex is a protein-conducting channel (PCC) for secretory and membrane proteins. Although Sec complexes can form oligomers, it has been suggested that a single copy may serve as an active PCC. We determined subnanometer-resolution cryo-electron microscopy structures of eukaryotic ribosome-Sec61 complexes. In combination with biochemical data, we found that in both idle and active states, the Sec complex is not oligomeric and interacts mainly via two cytoplasmic loops with the universal ribosomal adaptor site. In the active state, the ribosomal tunnel and a central pore of the monomeric PCC were occupied by the nascent chain, contacting loop 6 of the Sec complex. This provides a structural basis for the activity of a solitary Sec complex in cotranslational protein translocation.


    Organizational Affiliation

    Gene Center Munich and Center for Integrated Protein Science, Department of Chemistry and Biochemistry, Ludwig-Maximilians-Universit√§t M√ľnchen, Feodor-Lynen-Strasse 25, 81377 Munich, Germany.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SEC SIXTY-ONE PROTEIN HOMOLOGA490Saccharomyces cerevisiaeMutation(s): 0 
Find proteins for P38353 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROTEIN TRANSPORT PROTEIN SSS1B80Saccharomyces cerevisiaeMutation(s): 0 
Find proteins for P35179 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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  • Reference Sequence

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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
60S RIBOSOMAL PROTEIN L17-AI184Saccharomyces cerevisiaeMutation(s): 0 
Find proteins for P05740 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetails
60S RIBOSOMAL PROTEIN L19J189Saccharomyces cerevisiaeMutation(s): 0 
Find proteins for P0CX82 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 12
MoleculeChainsSequence LengthOrganismDetails
60S RIBOSOMAL PROTEIN L26-AL127Saccharomyces cerevisiaeMutation(s): 0 
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Entity ID: 13
MoleculeChainsSequence LengthOrganismDetails
60S RIBOSOMAL PROTEIN L31-AM113Saccharomyces cerevisiaeMutation(s): 0 
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Entity ID: 11
MoleculeChainsSequence LengthOrganismDetails
60S RIBOSOMAL PROTEIN L25K142Saccharomyces cerevisiaeMutation(s): 0 
Find proteins for P04456 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 14
MoleculeChainsSequence LengthOrganismDetails
60S RIBOSOMAL PROTEIN L35N120Saccharomyces cerevisiaeMutation(s): 0 
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Entity ID: 15
MoleculeChainsSequence LengthOrganismDetails
60S RIBOSOMAL PROTEIN L39O51Saccharomyces cerevisiaeMutation(s): 0 
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
PROTEIN TRANSPORT PROTEIN SEB2C87Saccharomyces cerevisiaeMutation(s): 0 
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
60S RIBOSOMAL PROTEIN L4-BH362Saccharomyces cerevisiaeMutation(s): 0 
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  • Reference Sequence

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Entity ID: 6
MoleculeChainsLengthOrganism
25S RRNAF25Saccharomyces cerevisiae

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Entity ID: 4
MoleculeChainsLengthOrganism
25S RRNAD63Saccharomyces cerevisiae

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Entity ID: 5
MoleculeChainsLengthOrganism
25S RRNAE34Saccharomyces cerevisiae
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Entity ID: 7
MoleculeChainsLengthOrganism
25S RRNAG18Saccharomyces cerevisiae
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.60 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-12-08
    Type: Initial release
  • Version 1.1: 2011-07-20
    Changes: Database references, Derived calculations, Other, Refinement description, Structure summary
  • Version 1.2: 2015-10-28
    Changes: Other
  • Version 1.3: 2017-04-19
    Changes: Other
  • Version 2.0: 2018-10-03
    Changes: Atomic model, Data collection, Derived calculations