6LQU

Cryo-EM structure of 90S small subunit preribosomes in transition states (State A1)

  • Classification: RIBOSOME
  • Organism(s): Saccharomyces cerevisiae S288C
  • Mutation(s): No 

  • Deposited: 2020-01-14 Released: 2020-09-16 
  • Deposition Author(s): Du, Y., Ye, K.
  • Funding Organization(s): National Natural Science Foundation of China (NSFC), Chinese Academy of Sciences

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.70 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

Cryo-EM structure of 90 S small ribosomal subunit precursors in transition states.

Du, Y., An, W., Zhu, X., Sun, Q., Qi, J., Ye, K.

(2020) Science 369: 1477-1481

  • DOI: https://doi.org/10.1126/science.aba9690
  • Primary Citation of Related Structures:  
    6LQP, 6LQQ, 6LQR, 6LQS, 6LQT, 6LQU, 6LQV

  • PubMed Abstract: 

    The 90 S preribosome is a large, early assembly intermediate of small ribosomal subunits that undergoes structural changes to give a pre-40 S ribosome. Here, we gained insight into this transition by determining cryo-electron microscopy structures of Saccharomyces cerevisiae intermediates in the path from the 90 S to the pre-40 S The full transition is blocked by deletion of RNA helicase Dhr1. A series of structural snapshots revealed that the excised 5' external transcribed spacer (5' ETS) is degraded within 90 S , driving stepwise disassembly of assembly factors and ribosome maturation. The nuclear exosome, an RNA degradation machine, docks on the 90 S through helicase Mtr4 and is primed to digest the 3' end of the 5' ETS. The structures resolved between 3.2- and 8.6-angstrom resolution reveal key intermediates and the critical role of 5' ETS degradation in 90 S progression.

    • Organizational Affiliation: 

    Key Laboratory of RNA Biology, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.


Macromolecules

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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S4-AD [auth SF]261Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S5E [auth SG]225Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S6-AF [auth SH]236Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S7-AG [auth SI]190Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S8-AH [auth SJ]200Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S9-AI [auth SK]197Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S11-AJ [auth SM]156Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S12K [auth SN]143Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S13L [auth SO]151Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 13
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S14-AM [auth SP]137Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 14
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S16-AN [auth SR]143Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 15
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S18-AO [auth ST]146Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 16
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S22-BP [auth SX]130Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 17
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S23-AQ [auth SY]145Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 18
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S24-AR [auth SZ]135Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 19
MoleculeChains Sequence LengthOrganismDetailsImage
40S ribosomal protein S28-AS [auth Sd]67Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 20
MoleculeChains Sequence LengthOrganismDetailsImage
rRNA 2'-O-methyltransferase fibrillarinT [auth 3B],
U [auth 3C]		327Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 2.1.1
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Entity ID: 21
MoleculeChains Sequence LengthOrganismDetailsImage
Nucleolar protein 56V [auth 3D]504Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 22
MoleculeChains Sequence LengthOrganismDetailsImage
Nucleolar protein 58W [auth 3E]511Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 23
MoleculeChains Sequence LengthOrganismDetailsImage
Ribosomal RNA-processing protein 9X [auth 3F]573Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 24
MoleculeChains Sequence LengthOrganismDetailsImage
13 kDa ribonucleoprotein-associated proteinY [auth 3G],
Z [auth 3H]		126Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 25
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 4AA [auth A4]776Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 26
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 5BA [auth A5]643Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 27
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 8CA [auth A8]713Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 28
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 9DA [auth A9]575Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 29
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 10EA [auth AE]1,769Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 30
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 15FA [auth AF]513Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 31
MoleculeChains Sequence LengthOrganismDetailsImage
NET1-associated nuclear protein 1GA [auth AG]896Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 32
MoleculeChains Sequence LengthOrganismDetailsImage
Periodic tryptophan protein 2HA [auth B1]923Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 33
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 12IA [auth B2]943Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 34
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 13JA [auth B3]817Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 35
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 18KA [auth B8]594Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 36
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 21LA [auth BE]939Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 37
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 6MA [auth B6]440Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 38
MoleculeChains Sequence LengthOrganismDetailsImage
Bud site selection protein 21NA [auth 5B]214Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 39
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 7OA [auth 5C]554Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 40
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 11PA [auth 5D]250Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 41
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein MPP10QA [auth 5E]593Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 42
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar ribonucleoprotein protein IMP3RA [auth 5F]183Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 43
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar ribonucleoprotein protein IMP4SA [auth 5G]290Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 44
MoleculeChains Sequence LengthOrganismDetailsImage
Something about silencing protein 10TA [auth 5H]610Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 45
MoleculeChains Sequence LengthOrganismDetailsImage
Protein SOF1UA [auth 5I]489Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 46
MoleculeChains Sequence LengthOrganismDetailsImage
rRNA-processing protein FCF2VA [auth 5J]217Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 47
MoleculeChains Sequence LengthOrganismDetailsImage
rRNA-processing protein FCF1WA [auth 5K]189Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
Find proteins for Q05498 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 48
MoleculeChains Sequence LengthOrganismDetailsImage
Ribosome biogenesis protein ENP2XA [auth RA]707Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
Find proteins for P48234 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 49
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar ribonucleoprotein protein LCP5YA [auth RB]357Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 50
MoleculeChains Sequence LengthOrganismDetailsImage
KRR1 small subunit processome componentZA [auth RC]316Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
Find proteins for P25586 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 51
MoleculeChains Sequence LengthOrganismDetailsImage
rRNA biogenesis protein RRP5AB [auth RD]1,729Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
Find proteins for Q05022 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 52
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 22BB [auth RE]1,237Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
Find proteins for P53254 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 53
MoleculeChains Sequence LengthOrganismDetailsImage
Ribosomal RNA-processing protein 7CB [auth RF]297Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
Find proteins for P25368 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 54
MoleculeChains Sequence LengthOrganismDetailsImage
Ribosomal RNA small subunit methyltransferase NEP1DB [auth RG],
EB [auth RH]		252Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 2.1.1.260
UniProt
Find proteins for Q06287 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 55
MoleculeChains Sequence LengthOrganismDetailsImage
Ribosome biogenesis protein UTP30FB [auth RI]274Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
Find proteins for P36144 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 56
MoleculeChains Sequence LengthOrganismDetailsImage
Ribosome biogenesis protein BMS1GB [auth RJ]1,183Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
Find proteins for Q08965 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 57
MoleculeChains Sequence LengthOrganismDetailsImage
RNA 3'-terminal phosphate cyclase-like proteinHB [auth RK]367Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 58
MoleculeChains Sequence LengthOrganismDetailsImage
RNA cytidine acetyltransferaseIB [auth RL],
JB [auth RM]		1,056Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 2.3.1
UniProt
Find proteins for P53914 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 59
MoleculeChains Sequence LengthOrganismDetailsImage
Nucleolar complex protein 14KB [auth RN]810Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 60
MoleculeChains Sequence LengthOrganismDetailsImage
Nucleolar complex protein 4LB [auth RO]552Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
Find proteins for Q06512 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 61
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 20MB [auth RP]2,493Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
Find proteins for P35194 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 62
MoleculeChains Sequence LengthOrganismDetailsImage
U3 small nucleolar RNA-associated protein 14NB [auth RQ]899Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
Find proteins for Q04500 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 63
MoleculeChains Sequence LengthOrganismDetailsImage
Essential nuclear protein 1OB [auth RS]483Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 64
MoleculeChains Sequence LengthOrganismDetailsImage
Pno1PB [auth RT]326Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 65
MoleculeChains Sequence LengthOrganismDetailsImage
Protein FAF1QB [auth RV]346Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 66
MoleculeChains Sequence LengthOrganismDetailsImage
Regulator of rDNA transcription protein 14RB [auth RW]206Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
Find proteins for P40470 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 67
MoleculeChains Sequence LengthOrganismDetailsImage
Protein BFR2SB [auth RY]534Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
Find proteins for Q06631 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 68
MoleculeChains Sequence LengthOrganismDetailsImage
Unassigned helicesTB [auth X1]347Saccharomyces cerevisiae S288CMutation(s): 0 
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Entity ID: 1
MoleculeChains LengthOrganismImage
U3 snoRNAA [auth 3A]333Saccharomyces cerevisiae S288C
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Entity ID: 2
MoleculeChains LengthOrganismImage
5' ETSB [auth 5A]700Saccharomyces cerevisiae S288C
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Entity ID: 3
MoleculeChains LengthOrganismImage
18S pre-rRNAC [auth SA]1,808Saccharomyces cerevisiae S288C
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONRELION

Structure Validation

View Full Validation Report



View more in-depth experimental data
Entry History & Funding Information

Deposition Data

  • Released Date: 2020-09-16 
    • Deposition Author(s): Du, Y., Ye, K.
Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China91940302, 91540201, 31430024, 31325007
Chinese Academy of SciencesChinaXDB08010203

Revision History  (Full details and data files)

  • Version 1.0: 2020-09-16
    Type: Initial release
  • Version 1.1: 2020-09-30
    Changes: Database references
  • Version 1.2: 2024-03-27
    Changes: Data collection, Database references, Refinement description