3J0P

Core of mammalian 80S pre-ribosome in complex with tRNAs fitted to a 10.6A cryo-em map: rotated PRE state 1


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 10.6 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure and dynamics of the Mammalian ribosomal pretranslocation complex.

Budkevich, T.Giesebrecht, J.Altman, R.B.Munro, J.B.Mielke, T.Nierhaus, K.H.Blanchard, S.C.Spahn, C.M.

(2011) Mol Cell 44: 214-224

  • DOI: 10.1016/j.molcel.2011.07.040
  • Primary Citation of Related Structures:  
    3J0Q, 3J0L, 3J0O, 3J0P

  • PubMed Abstract: 
  • Although the structural core of the ribosome is conserved in all kingdoms of life, eukaryotic ribosomes are significantly larger and more complex than their bacterial counterparts. The extent to which these differences influence the molecular mechanism of translation remains elusive ...

    Although the structural core of the ribosome is conserved in all kingdoms of life, eukaryotic ribosomes are significantly larger and more complex than their bacterial counterparts. The extent to which these differences influence the molecular mechanism of translation remains elusive. Multiparticle cryo-electron microscopy and single-molecule FRET investigations of the mammalian pretranslocation complex reveal spontaneous, large-scale conformational changes, including an intersubunit rotation of the ribosomal subunits. Through structurally related processes, tRNA substrates oscillate between classical and at least two distinct hybrid configurations facilitated by localized changes in their L-shaped fold. Hybrid states are favored within the mammalian complex. However, classical tRNA positions can be restored by tRNA binding to the E site or by the eukaryotic-specific antibiotic and translocation inhibitor cycloheximide. These findings reveal critical distinctions in the structural and energetic features of bacterial and mammalian ribosomes, providing a mechanistic basis for divergent translation regulation strategies and species-specific antibiotic action.


    Organizational Affiliation

    Institut für Medizinische Physik und Biophysik, Charité - Universitätsmedizin Berlin, Ziegelstrasse 5-9, 10117 Berlin, Germany.



Macromolecules

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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
Ribosomal protein S15S125Oryctolagus cuniculusMutation(s): 0 
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
Ribosomal protein S23L141Oryctolagus cuniculusMutation(s): 0 
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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetailsImage
Ribosomal protein S30X68Oryctolagus cuniculusMutation(s): 0 
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Entity ID: 14
MoleculeChainsSequence LengthOrganismDetailsImage
Ribosomal protein L10aB213Oryctolagus cuniculusMutation(s): 0 
Find proteins for P0CX43 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Go to UniProtKB:  P0CX43
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  • Reference Sequence
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Entity ID: 1
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40S ribosomal RNA fragmenta48Oryctolagus cuniculus
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  • Entity ID: 2
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    40S ribosomal RNA fragmentc17Oryctolagus cuniculus
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    • Entity ID: 3
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      40S ribosomal RNA fragmentd7Oryctolagus cuniculus
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      Entity ID: 4
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      40S ribosomal RNA fragmentg31Oryctolagus cuniculus
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      • Entity ID: 5
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        40S ribosomal RNA fragmentG13Oryctolagus cuniculus
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        Entity ID: 6
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        40S ribosomal RNA fragmentf21Oryctolagus cuniculus
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        Entity ID: 7
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        40S ribosomal RNA fragmenth111Oryctolagus cuniculus
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        Entity ID: 11
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        60S ribosomal RNA fragment2112Oryctolagus cuniculus
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        • Entity ID: 12
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          60S ribosomal RNA fragment312Oryctolagus cuniculus
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          Entity ID: 13
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          60S ribosomal RNA fragment750Oryctolagus cuniculus
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          Entity ID: 15
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          tRNAY75Oryctolagus cuniculus
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          • Entity ID: 16
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            mRNA fragmenty3Oryctolagus cuniculus
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            Entity ID: 17
            MoleculeChainsLengthOrganismImage
            tRNAW77Oryctolagus cuniculus
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            • Entity ID: 18
              MoleculeChainsLengthOrganismImage
              mRNA fragmentw2Oryctolagus cuniculus
              Experimental Data & Validation

              Experimental Data

              • Method: ELECTRON MICROSCOPY
              • Resolution: 10.6 Å
              • Aggregation State: PARTICLE 
              • Reconstruction Method: SINGLE PARTICLE 

              Structure Validation

              View Full Validation Report



              Entry History 

              Deposition Data

              Revision History 

              • Version 1.0: 2011-11-16
                Type: Initial release
              • Version 1.1: 2018-07-18
                Changes: Data collection, Database references