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- PDB-8c83: Cryo-EM structure of in vitro reconstituted Otu2-bound Ub-40S complex -

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Basic information

Entry
Database: PDB / ID: 8c83
TitleCryo-EM structure of in vitro reconstituted Otu2-bound Ub-40S complex
Components
  • (40S ribosomal protein ...) x 15
  • 18S ribosomal RNA
  • OTU domain-containing protein 2
  • Ubiquitin
KeywordsRIBOSOME / 40S / Ubiquitin / Deubiquitinating enzyme / Otu2 / Rps7
Function / homology
Function and homology information


maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / positive regulation of translational fidelity / Protein methylation / RMTs methylate histone arginines / mTORC1-mediated signalling / Protein hydroxylation / Formation of the ternary complex, and subsequently, the 43S complex / Translation initiation complex formation / Ribosomal scanning and start codon recognition / Major pathway of rRNA processing in the nucleolus and cytosol ...maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / positive regulation of translational fidelity / Protein methylation / RMTs methylate histone arginines / mTORC1-mediated signalling / Protein hydroxylation / Formation of the ternary complex, and subsequently, the 43S complex / Translation initiation complex formation / Ribosomal scanning and start codon recognition / Major pathway of rRNA processing in the nucleolus and cytosol / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / Formation of a pool of free 40S subunits / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / L13a-mediated translational silencing of Ceruloplasmin expression / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / regulation of translational fidelity / ribosomal subunit export from nucleus / endonucleolytic cleavage in ITS1 to separate SSU-rRNA from 5.8S rRNA and LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / 90S preribosome / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / small-subunit processome / maintenance of translational fidelity / cytoplasmic stress granule / modification-dependent protein catabolic process / rRNA processing / protein tag activity / ribosome biogenesis / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / cysteine-type deubiquitinase activity / cytoplasmic translation / rRNA binding / ribosome / protein ubiquitination / structural constituent of ribosome / translation / ubiquitin protein ligase binding / nucleolus / mitochondrion / RNA binding / nucleoplasm / nucleus / metal ion binding / cytoplasm / cytosol
Similarity search - Function
: / OTU-like cysteine protease / OTU domain / OTU domain profile. / Ribosomal protein S21e, conserved site / Ribosomal protein S21e signature. / Ribosomal protein S5, eukaryotic/archaeal / Ribosomal protein S2, eukaryotic / Ribosomal protein S21e / Ribosomal protein S21e superfamily ...: / OTU-like cysteine protease / OTU domain / OTU domain profile. / Ribosomal protein S21e, conserved site / Ribosomal protein S21e signature. / Ribosomal protein S5, eukaryotic/archaeal / Ribosomal protein S2, eukaryotic / Ribosomal protein S21e / Ribosomal protein S21e superfamily / Ribosomal protein S21e / S27a-like superfamily / Ribosomal protein S2, eukaryotic/archaeal / : / Ribosomal protein S27a / Ribosomal protein S27a / Ribosomal protein S27a / Ribosomal protein S8e subdomain, eukaryotes / Ribosomal protein S30 / Ribosomal protein S30 / Ribosomal protein S7e signature. / Ribosomal protein S27e signature. / Ribosomal protein S4e, N-terminal, conserved site / Ribosomal protein S4e signature. / 40S ribosomal protein S4, C-terminal domain / 40S ribosomal protein S4 C-terminus / Ribosomal protein S8e, conserved site / Ribosomal protein S8e signature. / Ribosomal protein S6, eukaryotic / Ribosomal protein S4e, N-terminal / RS4NT (NUC023) domain / Ribosomal S24e conserved site / Ribosomal protein S24e signature. / 40S ribosomal protein S11, N-terminal / Ribosomal_S17 N-terminal / Ribosomal protein S7e / Ribosomal protein S7e / Ribosomal protein S4, KOW domain / Ribosomal protein S4e / Ribosomal protein S4e, central region / Ribosomal protein S4e, central domain superfamily / Ribosomal family S4e / Ribosomal protein S27, zinc-binding domain superfamily / Ribosomal protein S24e / Ribosomal protein S23, eukaryotic/archaeal / Ribosomal protein S24e / Ribosomal protein S6/S6e/A/B/2, conserved site / Ribosomal protein S6e signature. / Ribosomal protein S27 / Ribosomal protein S27 / Ribosomal protein S8e / Ribosomal protein S17, archaeal/eukaryotic / Ribosomal protein S6e / Ribosomal protein S6e / Ribosomal protein S6e / Ribosomal protein S13/S15, N-terminal / Ribosomal protein S15P / Ribosomal S13/S15 N-terminal domain / Ribosomal S13/S15 N-terminal domain / Ribosomal protein S4/S9, eukaryotic/archaeal / Ribosomal protein S8e/ribosomal biogenesis NSA2 / Ribosomal protein S8e / Papain-like cysteine peptidase superfamily / Ribosomal protein S2 signature 2. / Ubiquitin domain signature. / Ubiquitin conserved site / Ubiquitin domain / Ribosomal protein S2 signature 1. / : / Ribosomal protein S2, conserved site / Ribosomal protein S5, N-terminal, conserved site / Ribosomal protein S5 signature. / Ribosomal protein S2 / Ribosomal protein S2, flavodoxin-like domain superfamily / Ribosomal protein S2 / Ribosomal protein S17, conserved site / Ribosomal protein S17 signature. / S5 double stranded RNA-binding domain profile. / Ribosomal protein S5 / Ribosomal protein S5, N-terminal / Ribosomal protein S5, N-terminal domain / Ribosomal protein S5, C-terminal / Ribosomal protein S4/S9 N-terminal domain / Ubiquitin family / Ribosomal protein S5, C-terminal domain / Ribosomal protein S8 signature. / Ribosomal protein S4/S9 N-terminal domain / Ribosomal protein S4/S9, N-terminal / Ribosomal protein S4, conserved site / Ribosomal protein S4 signature. / Ribosomal protein S15 signature. / Ribosomal protein S4/S9 / Ribosomal protein S8 / Ribosomal protein S8 superfamily / Ribosomal protein S8 / S4 RNA-binding domain profile. / Ubiquitin homologues / S4 RNA-binding domain / S4 domain / RNA-binding S4 domain
Similarity search - Domain/homology
RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Small ribosomal subunit protein uS4A / Small ribosomal subunit protein uS15 / Ubiquitin-ribosomal protein eS31 fusion protein / Small ribosomal subunit protein eS21A / Small ribosomal subunit protein uS8A / Small ribosomal subunit protein uS12A ...RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Small ribosomal subunit protein uS4A / Small ribosomal subunit protein uS15 / Ubiquitin-ribosomal protein eS31 fusion protein / Small ribosomal subunit protein eS21A / Small ribosomal subunit protein uS8A / Small ribosomal subunit protein uS12A / Small ribosomal subunit protein eS24A / Small ribosomal subunit protein eS30A / Small ribosomal subunit protein eS4A / Small ribosomal subunit protein eS6A / Small ribosomal subunit protein eS8B / Small ribosomal subunit protein uS17A / Small ribosomal subunit protein uS5 / Small ribosomal subunit protein eS7A / Small ribosomal subunit protein uS2A / Small ribosomal subunit protein eS27A / OTU domain-containing protein 2
Similarity search - Component
Biological speciesSaccharomyces cerevisiae (brewer's yeast)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å
AuthorsIkeuchi, K. / Buschauer, R. / Cheng, J. / Berninghausen, O. / Becker, T. / Beckmann, R.
Funding support Germany, Japan, 5items
OrganizationGrant numberCountry
German Research Foundation (DFG)SFB/TRR-174 Germany
German Research Foundation (DFG)BE1814/15-1 Germany
German Research Foundation (DFG)BE1814/1-1 Germany
Japan Society for the Promotion of Science (JSPS) Japan
Boehringer Ingelheim Fonds (BIF) Germany
CitationJournal: Nat Commun / Year: 2023
Title: Molecular basis for recognition and deubiquitination of 40S ribosomes by Otu2.
Authors: Ken Ikeuchi / Nives Ivic / Robert Buschauer / Jingdong Cheng / Thomas Fröhlich / Yoshitaka Matsuo / Otto Berninghausen / Toshifumi Inada / Thomas Becker / Roland Beckmann /
Abstract: In actively translating 80S ribosomes the ribosomal protein eS7 of the 40S subunit is monoubiquitinated by the E3 ligase Not4 and deubiquitinated by Otu2 upon ribosomal subunit recycling. Despite its ...In actively translating 80S ribosomes the ribosomal protein eS7 of the 40S subunit is monoubiquitinated by the E3 ligase Not4 and deubiquitinated by Otu2 upon ribosomal subunit recycling. Despite its importance for translation efficiency the exact role and structural basis for this translational reset is poorly understood. Here, structural analysis by cryo-electron microscopy of native and reconstituted Otu2-bound ribosomal complexes reveals that Otu2 engages 40S subunits mainly between ribosome recycling and initiation stages. Otu2 binds to several sites on the intersubunit surface of the 40S that are not occupied by any other 40S-binding factors. This binding mode explains the discrimination against 80S ribosomes via the largely helical N-terminal domain of Otu2 as well as the specificity for mono-ubiquitinated eS7 on 40S. Collectively, this study reveals mechanistic insights into the Otu2-driven deubiquitination steps for translational reset during ribosome recycling/(re)initiation.
History
DepositionJan 18, 2023Deposition site: PDBE / Processing site: PDBE
Revision 1.0May 24, 2023Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
x: OTU domain-containing protein 2
y: Ubiquitin
2: 18S ribosomal RNA
P: 40S ribosomal protein S0-A
R: 40S ribosomal protein S2
S: 40S ribosomal protein S4-A
T: 40S ribosomal protein S6-A
U: 40S ribosomal protein S7-A
V: 40S ribosomal protein S8-B
W: 40S ribosomal protein S9-A
X: 40S ribosomal protein S11-A
Y: 40S ribosomal protein S13
a: 40S ribosomal protein S21-A
b: 40S ribosomal protein S22-A
c: 40S ribosomal protein S23-A
d: 40S ribosomal protein S24-A
f: 40S ribosomal protein S27-A
g: 40S ribosomal protein S30-A


Theoretical massNumber of molelcules
Total (without water)910,07718
Polymers910,07718
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 2 types, 2 molecules xy

#1: Protein OTU domain-containing protein 2


Mass: 36157.016 Da / Num. of mol.: 1 / Mutation: C178S
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: OTU2, YHL013C / Production host: Escharichia coli (E. coli) / References: UniProt: P38747
#2: Protein Ubiquitin


Mass: 8576.831 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: This protein was purchased from biotechne, Cat# U-100sc
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: RPS31, RPS37, UBI3, YLR167W, L9470.14 / Production host: Escherichia coli (E. coli) / References: UniProt: P05759

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RNA chain , 1 types, 1 molecules 2

#3: RNA chain 18S ribosomal RNA


Mass: 579871.062 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast)

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40S ribosomal protein ... , 15 types, 15 molecules PRSTUVWXYabcdfg

#4: Protein 40S ribosomal protein S0-A / Nucleic acid-binding protein NAB1A / Small ribosomal subunit protein uS2-A


Mass: 28051.330 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P32905
#5: Protein 40S ribosomal protein S2 / Omnipotent suppressor protein SUP44 / RP12 / S4 / Small ribosomal subunit protein uS5 / YS5


Mass: 27490.826 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P25443
#6: Protein 40S ribosomal protein S4-A / RP5 / S7 / Small ribosomal subunit protein eS4-A / YS6


Mass: 29469.330 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P0CX35
#7: Protein 40S ribosomal protein S6-A / RP9 / S10 / Small ribosomal subunit protein eS6-A / YS4


Mass: 27054.486 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P0CX37
#8: Protein 40S ribosomal protein S7-A / RP30 / RP40 / Small ribosomal subunit protein eS7-A


Mass: 21658.209 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P26786
#9: Protein 40S ribosomal protein S8-B / RP19 / S14 / Small ribosomal subunit protein eS8-B / YS9


Mass: 22537.803 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P0CX40
#10: Protein 40S ribosomal protein S9-A / RP21 / S13 / Small ribosomal subunit protein uS4-A / YP28 / YS11


Mass: 22487.893 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: O13516
#11: Protein 40S ribosomal protein S11-A / RP41 / S18 / Small ribosomal subunit protein uS17-A / YS12


Mass: 17785.934 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P0CX47
#12: Protein 40S ribosomal protein S13 / S27a / Small ribosomal subunit protein uS15 / YS15


Mass: 17059.945 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P05756
#13: Protein 40S ribosomal protein S21-A / S26 / Small ribosomal subunit protein eS21-A / YS25


Mass: 9758.829 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P0C0V8
#14: Protein 40S ribosomal protein S22-A / RP50 / S24 / Small ribosomal subunit protein uS8-A / YP58 / YS22


Mass: 14650.062 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P0C0W1
#15: Protein 40S ribosomal protein S23-A / RP37 / S28 / Small ribosomal subunit protein uS12-A / YS14


Mass: 16073.896 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P0CX29
#16: Protein 40S ribosomal protein S24-A / RP50 / Small ribosomal subunit protein eS24-A


Mass: 15362.848 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P0CX31
#17: Protein 40S ribosomal protein S27-A / RP61 / Small ribosomal subunit protein eS27-A / YS20


Mass: 8893.391 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P35997
#18: Protein 40S ribosomal protein S30-A / Small ribosomal subunit protein eS30-A


Mass: 7137.541 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P0CX33

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

Component
IDNameTypeEntity IDParent-IDSource
1in vitro reconstituted yeast 40S ribosome complex with deubiquitinating enzyme Otu2 bound to ubiquitinated eS7 - body 1RIBOSOMEall0MULTIPLE SOURCES
2OTU domain-containing protein 2; UbiquitinRIBOSOME#1-#21RECOMBINANT
3yeast 40S ribosome complexRIBOSOME#3-#181NATURAL
Molecular weightExperimental value: NO
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-IDStrain
22Saccharomyces cerevisiae (brewer's yeast)4932W303
33Saccharomyces cerevisiae (brewer's yeast)4932
Source (recombinant)Organism: Escharichia coli (E. coli)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 4000 nm / Nominal defocus min: 500 nm
Image recordingElectron dose: 46 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

Software
NameVersionClassificationNB
phenix.real_space_refine1.20.1_4487refinement
PHENIX1.20.1_4487refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 31646 / Symmetry type: POINT
RefinementCross valid method: NONE
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
Displacement parametersBiso mean: 150.68 Å2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00549117
ELECTRON MICROSCOPYf_angle_d0.95772104
ELECTRON MICROSCOPYf_dihedral_angle_d16.917091
ELECTRON MICROSCOPYf_chiral_restr0.0489113
ELECTRON MICROSCOPYf_plane_restr0.0084839

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