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



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
  • Structures With Same Primary Citation

  • 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-transcrip ...

    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.



Macromolecules

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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetails
Utp4N727Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 11
MoleculeChainsSequence LengthOrganismDetails
Utp1O923Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 12
MoleculeChainsSequence LengthOrganismDetails
Utp6P421Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 13
MoleculeChainsSequence LengthOrganismDetails
Utp12Q917Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 14
MoleculeChainsSequence LengthOrganismDetails
Utp13R736Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 15
MoleculeChainsSequence LengthOrganismDetails
Utp18S594Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 16
MoleculeChainsSequence LengthOrganismDetails
Utp21T939Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 17
MoleculeChainsSequence LengthOrganismDetails
Sof1U489Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 18
MoleculeChainsSequence LengthOrganismDetails
Utp7W554Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 19
MoleculeChainsSequence LengthOrganismDetails
Imp3Z183Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 20
MoleculeChainsSequence LengthOrganismDetails
Mpp10A593Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 21
MoleculeChainsSequence LengthOrganismDetails
Bud21D214Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 22
MoleculeChainsSequence LengthOrganismDetails
Nop56a494Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 23
MoleculeChainsSequence LengthOrganismDetails
Nop58b503Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 24
MoleculeChainsSequence LengthOrganismDetails
Nop1.1c, d327Saccharomyces cerevisiae BY4741Mutation(s): 0 
EC: 2.1.1
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Entity ID: 25
MoleculeChainsSequence LengthOrganismDetails
Snu13e, f126Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 26
MoleculeChainsSequence LengthOrganismDetails
Rrp9g573Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 27
MoleculeChainsSequence LengthOrganismDetails
Utp24l189Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 28
MoleculeChainsSequence LengthOrganismDetails
Unidentified fragmentx24Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Utp17H853Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
Utp8I519Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
Utp15J513Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
Utp9K183Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
Utp5L643Saccharomyces cerevisiae BY4741Mutation(s): 0 
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
Utp10M1769Saccharomyces cerevisiae BY4741Mutation(s): 0 
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  • Reference Sequence

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Entity ID: 1
MoleculeChainsLengthOrganism
5'ETS rRNA0700Saccharomyces cerevisiae BY4741
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Entity ID: 2
MoleculeChainsLengthOrganism
18S rRNA 5' domain start115Saccharomyces cerevisiae BY4741

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Entity ID: 3
MoleculeChainsLengthOrganism
U3 snoRNA2146Saccharomyces cerevisiae BY4741
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 

  • 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