6ND4

Conformational switches control early maturation of the eukaryotic small ribosomal subunit


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

Conformational switches control early maturation of the eukaryotic small ribosomal subunit.

Hunziker, M.Barandun, J.Buzovetsky, O.Steckler, C.Molina, H.Klinge, S.

(2019) Elife 8

  • DOI: 10.7554/eLife.45185
  • Primary Citation of Related Structures:  
    6ND4

  • PubMed Abstract: 
  • Eukaryotic ribosome biogenesis is initiated with the transcription of pre-ribosomal RNA at the 5' external transcribed spacer, which directs the early association of assembly factors but is absent from the mature ribosome. The subsequent co-transcriptional association of ribosome assembly factors with pre-ribosomal RNA results in the formation of the small subunit processome ...

    Eukaryotic ribosome biogenesis is initiated with the transcription of pre-ribosomal RNA at the 5' external transcribed spacer, which directs the early association of assembly factors but is absent from the mature ribosome. The subsequent co-transcriptional association of ribosome assembly factors with pre-ribosomal RNA results in the formation of the small subunit processome. Here we show that stable rRNA domains of the small ribosomal subunit can independently recruit their own biogenesis factors in vivo. The final assembly and compaction of the small subunit processome requires the presence of the 5' external transcribed spacer RNA and all ribosomal RNA domains. Additionally, our cryo-electron microscopy structure of the earliest nucleolar pre-ribosomal assembly - the 5' external transcribed spacer ribonucleoprotein - provides a mechanism for how conformational changes in multi-protein complexes can be employed to regulate the accessibility of binding sites and therefore define the chronology of maturation events during early stages of ribosome assembly.


    Organizational Affiliation

    Laboratory of Protein and Nucleic Acid Chemistry, The Rockefeller University, New York, United States.



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Utp17D [auth H]853Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Utp8E [auth I]519Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Utp15F [auth J]513Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Utp9G [auth K]183Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Utp5H [auth L]643Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Utp10I [auth M]1,769Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Utp4J [auth N]727Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Utp1K [auth O]923Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Utp6L [auth P]421Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Utp12M [auth Q]917Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Utp13N [auth R]736Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Utp18O [auth S]594Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Utp21P [auth T]939Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Sof1Q [auth U]489Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Utp7R [auth W]554Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Mpp10T [auth A]593Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Bud21U [auth D]214Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Nop56V [auth a]494Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Nop58W [auth b]503Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Nop1.1X [auth c],
Y [auth d]
327Saccharomyces cerevisiae BY4741Mutation(s): 0 
EC: 2.1.1
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Snu13Z [auth e],
AA [auth f]
126Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Rrp9BA [auth g]573Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Utp24CA [auth l]189Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Unidentified fragmentDA [auth x]24Saccharomyces cerevisiae BY4741Mutation(s): 0 
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5'ETS rRNAA [auth 0]700Saccharomyces cerevisiae BY4741
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18S rRNA 5' domain startB [auth 1]15Saccharomyces cerevisiae BY4741
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U3 snoRNAC [auth 2]146Saccharomyces cerevisiae BY4741
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/Office of the DirectorUnited States1DP2GM123459
Swiss National Science FoundationSwitzerland155515

Revision History  (Full details and data files)

  • Version 1.0: 2019-06-19
    Type: Initial release
  • Version 1.1: 2019-06-26
    Changes: Data collection, Structure summary
  • Version 1.2: 2019-07-03
    Changes: Data collection, Database references
  • Version 2.0: 2019-12-18
    Changes: Other, Polymer sequence