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- PDB-8ced: Rnase R bound to a 30S degradation intermediate (State I - head-t... -

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Basic information

Entry
Database: PDB / ID: 8ced
TitleRnase R bound to a 30S degradation intermediate (State I - head-turning)
Components
  • (30S ribosomal protein ...) x 19
  • 16S rRNA
  • RNA Substrate
  • RNase R
KeywordsRIBOSOME / SSU / 30S / RNase R / ribosomal degradation / turnover
Function / homology
Function and homology information


ribosomal small subunit biogenesis / small ribosomal subunit rRNA binding / ribosomal small subunit assembly / cytosolic small ribosomal subunit / small ribosomal subunit / tRNA binding / rRNA binding / ribosome / structural constituent of ribosome / ribonucleoprotein complex ...ribosomal small subunit biogenesis / small ribosomal subunit rRNA binding / ribosomal small subunit assembly / cytosolic small ribosomal subunit / small ribosomal subunit / tRNA binding / rRNA binding / ribosome / structural constituent of ribosome / ribonucleoprotein complex / translation / response to antibiotic / mRNA binding / RNA binding / zinc ion binding / cytosol / cytoplasm
Similarity search - Function
Ribosomal protein S14, type Z / Ribosomal protein S16, conserved site / Ribosomal protein S16 signature. / Ribosomal protein S14/S29 / Ribosomal protein S3, bacterial-type / Ribosomal protein S6, conserved site / Ribosomal protein S6 signature. / Ribosomal protein S19, bacterial-type / Ribosomal protein S7, bacterial/organellar-type / Ribosomal protein S11, bacterial-type ...Ribosomal protein S14, type Z / Ribosomal protein S16, conserved site / Ribosomal protein S16 signature. / Ribosomal protein S14/S29 / Ribosomal protein S3, bacterial-type / Ribosomal protein S6, conserved site / Ribosomal protein S6 signature. / Ribosomal protein S19, bacterial-type / Ribosomal protein S7, bacterial/organellar-type / Ribosomal protein S11, bacterial-type / Ribosomal protein S13, bacterial-type / Ribosomal protein S20 / Ribosomal protein S20 superfamily / Ribosomal protein S20 / Ribosomal protein S9, bacterial/plastid / Ribosomal protein S4, bacterial-type / 30S ribosomal protein S17 / Ribosomal protein S5, bacterial-type / Ribosomal protein S6, plastid/chloroplast / Ribosomal protein S2, bacteria/mitochondria/plastid / Ribosomal protein S18, conserved site / Ribosomal protein S18 signature. / Ribosomal protein S16 / Ribosomal protein S16 / Ribosomal protein S16 domain superfamily / Ribosomal protein S15, bacterial-type / Ribosomal protein S2 signature 2. / Ribosomal protein S6 / Ribosomal protein S6 / Ribosomal protein S6 superfamily / Ribosomal protein S12, bacterial-type / Translation elongation factor EF1B/ribosomal protein S6 / Ribosomal protein S18 / Ribosomal protein S18 / Ribosomal protein S18 superfamily / K Homology domain / K homology RNA-binding domain / Ribosomal protein S3, conserved site / Ribosomal protein S14, conserved site / Ribosomal protein S10, conserved site / : / K Homology domain, type 2 / Ribosomal protein S3, C-terminal / Ribosomal protein S3, C-terminal domain superfamily / Ribosomal protein S15/S19, conserved site / KH domain / Ribosomal protein S19/S15 / Ribosomal protein S19/S15, superfamily / Ribosomal protein S10 / Ribosomal protein S3, C-terminal domain / Ribosomal protein S3 signature. / Ribosomal protein S10 signature. / Ribosomal protein S14 signature. / Ribosomal protein S7, conserved site / Ribosomal protein S17, conserved site / K homology domain superfamily, prokaryotic type / Ribosomal protein S19 / Ribosomal protein S2 signature 1. / Ribosomal protein S13, conserved site / Ribosomal protein S2, conserved site / Ribosomal protein S13 / 30s ribosomal protein S13, C-terminal / Ribosomal protein S2 / Ribosomal protein S2, flavodoxin-like domain superfamily / Ribosomal protein S2 / Ribosomal protein S4/S9 N-terminal domain / Ribosomal protein S14 / Ribosomal protein S4/S9, N-terminal / Ribosomal protein S4, conserved site / Type-2 KH domain profile. / Ribosomal protein S4/S9 N-terminal domain / Ribosomal protein S13/S18 / Ribosomal protein S4/S9 / Ribosomal protein S19 signature. / K homology domain-like, alpha/beta / Ribosomal protein S14p/S29e / Ribosomal protein S8 / Ribosomal protein S8 superfamily / Ribosomal protein S5, N-terminal, conserved site / Ribosomal protein S5 signature. / Ribosomal protein S5 / Ribosomal protein S5, N-terminal / Ribosomal S11, conserved site / Ribosomal protein S7 signature. / Ribosomal protein S10p/S20e / Ribosomal protein S13-like, H2TH / S5 double stranded RNA-binding domain profile. / Ribosomal protein S5, C-terminal / Ribosomal protein S9, conserved site / Ribosomal protein S5, N-terminal domain / Ribosomal protein S8 / Ribosomal protein S10 domain / Ribosomal protein S10 domain superfamily / Ribosomal protein S17 signature. / Ribosomal protein S5, C-terminal domain / S4 RNA-binding domain / Ribosomal protein S11 / RNA-binding S4 domain / Ribosomal protein S13 signature. / Ribosomal protein S5/S7
Similarity search - Domain/homology
: / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Small ribosomal subunit protein uS11 / Small ribosomal subunit protein uS17 / Small ribosomal subunit protein uS14B / Small ribosomal subunit protein uS8 / Small ribosomal subunit protein uS13 ...: / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Small ribosomal subunit protein uS11 / Small ribosomal subunit protein uS17 / Small ribosomal subunit protein uS14B / Small ribosomal subunit protein uS8 / Small ribosomal subunit protein uS13 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS3 / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS5 / Small ribosomal subunit protein bS6 / Small ribosomal subunit protein uS7 / Small ribosomal subunit protein uS9 / Small ribosomal subunit protein uS10 / Small ribosomal subunit protein uS12 / Small ribosomal subunit protein uS15 / Small ribosomal subunit protein bS16 / Small ribosomal subunit protein bS18 / Small ribosomal subunit protein uS19 / Small ribosomal subunit protein bS20
Similarity search - Component
Biological speciesBacillus subtilis subsp. subtilis str. 168 (bacteria)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.15 Å
AuthorsPaternoga, H. / Dimitrova-Paternoga, L. / Wilson, D.N.
Funding support Germany, 1items
OrganizationGrant numberCountry
German Research Foundation (DFG)WI3285/11-1 Germany
CitationJournal: Nature / Year: 2024
Title: Structural basis of ribosomal 30S subunit degradation by RNase R.
Authors: Lyudmila Dimitrova-Paternoga / Sergo Kasvandik / Bertrand Beckert / Sander Granneman / Tanel Tenson / Daniel N Wilson / Helge Paternoga /
Abstract: Protein synthesis is a major energy-consuming process of the cell that requires the controlled production and turnover of ribosomes. Although the past few years have seen major advances in our ...Protein synthesis is a major energy-consuming process of the cell that requires the controlled production and turnover of ribosomes. Although the past few years have seen major advances in our understanding of ribosome biogenesis, structural insight into the degradation of ribosomes has been lacking. Here we present native structures of two distinct small ribosomal 30S subunit degradation intermediates associated with the 3' to 5' exonuclease ribonuclease R (RNase R). The structures reveal that RNase R binds at first to the 30S platform to facilitate the degradation of the functionally important anti-Shine-Dalgarno sequence and the decoding-site helix 44. RNase R then encounters a roadblock when it reaches the neck region of the 30S subunit, and this is overcome by a major structural rearrangement of the 30S head, involving the loss of ribosomal proteins. RNase R parallels this movement and relocates to the decoding site by using its N-terminal helix-turn-helix domain as an anchor. In vitro degradation assays suggest that head rearrangement poses a major kinetic barrier for RNase R, but also indicate that the enzyme alone is sufficient for complete degradation of 30S subunits. Collectively, our results provide a mechanistic basis for the degradation of 30S mediated by RNase R, and reveal that RNase R targets orphaned 30S subunits using a dynamic mechanism involving an anchored switching of binding sites.
History
DepositionFeb 1, 2023Deposition site: PDBE / Processing site: PDBE
Revision 1.0Dec 20, 2023Provider: repository / Type: Initial release
Revision 1.1Feb 14, 2024Group: Database references / Category: citation
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_DOI / _citation.year
Revision 1.2Feb 21, 2024Group: Database references / Category: citation / citation_author / Item: _citation.pdbx_database_id_PubMed / _citation.title
Revision 1.3Feb 28, 2024Group: Database references / Category: citation_author / Item: _citation_author.identifier_ORCID
Revision 1.4Mar 13, 2024Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: 16S rRNA
B: RNA Substrate
C: RNase R
D: 30S ribosomal protein S2
F: 30S ribosomal protein S4
G: 30S ribosomal protein S5
I: 30S ribosomal protein S8
L: 30S ribosomal protein S12
O: 30S ribosomal protein S15
P: 30S ribosomal protein S16
Q: 30S ribosomal protein S17
S: 30S ribosomal protein S20
T: 30S ribosomal protein S6
U: 30S ribosomal protein S18
V: 30S ribosomal protein S11
E: 30S ribosomal protein S3
H: 30S ribosomal protein S7
J: 30S ribosomal protein S9
K: 30S ribosomal protein S10
M: 30S ribosomal protein S13
N: 30S ribosomal protein S14
R: 30S ribosomal protein S19


Theoretical massNumber of molelcules
Total (without water)867,87022
Polymers867,87022
Non-polymers00
Water0
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area75430 Å2
ΔGint-641 kcal/mol
Surface area283210 Å2

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Components

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RNA chain , 2 types, 2 molecules AB

#1: RNA chain 16S rRNA /


Mass: 503369.125 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: GenBank: 225184640
#2: RNA chain RNA Substrate


Mass: 2259.483 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)

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Protein , 1 types, 1 molecules C

#3: Protein RNase R


Mass: 88886.312 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)

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30S ribosomal protein ... , 19 types, 19 molecules DFGILOPQSTUVEHJKMNR

#4: Protein 30S ribosomal protein S2 / / BS1 / Vegetative protein 209 / VEG209


Mass: 28009.297 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: UniProt: P21464
#5: Protein 30S ribosomal protein S4 / / BS4


Mass: 22874.271 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: UniProt: P21466
#6: Protein 30S ribosomal protein S5 / / BS5


Mass: 17650.625 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: UniProt: P21467
#7: Protein 30S ribosomal protein S8 / / BS8


Mass: 14901.427 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: UniProt: P12879
#8: Protein 30S ribosomal protein S12 / / BS12


Mass: 15248.736 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: UniProt: P21472
#9: Protein 30S ribosomal protein S15 / / BS18


Mass: 10597.224 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: UniProt: P21473
#10: Protein 30S ribosomal protein S16 / / BS17


Mass: 10153.833 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: UniProt: P21474
#11: Protein 30S ribosomal protein S17 / / BS16


Mass: 10220.979 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: UniProt: P12874
#12: Protein 30S ribosomal protein S20 / / BS20


Mass: 9622.217 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: UniProt: P21477
#13: Protein 30S ribosomal protein S6 / / BS9


Mass: 11140.548 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: UniProt: P21468
#14: Protein 30S ribosomal protein S18 / / BS21


Mass: 8990.613 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: UniProt: P21475
#15: Protein 30S ribosomal protein S11 / / BS11


Mass: 13952.000 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: UniProt: P04969
#16: Protein 30S ribosomal protein S3 / / BS3 / BS2


Mass: 24364.887 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: UniProt: P21465
#17: Protein 30S ribosomal protein S7 / / BS7


Mass: 17915.879 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: UniProt: P21469
#18: Protein 30S ribosomal protein S9 / / BS10


Mass: 14335.504 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: UniProt: P21470
#19: Protein 30S ribosomal protein S10 / / BS13


Mass: 11687.661 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: UniProt: P21471
#20: Protein 30S ribosomal protein S13 / / BS14


Mass: 13818.085 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: UniProt: P20282
#21: Protein 30S ribosomal protein S14 / / 30S ribosomal protein S14 type Z / 30S ribosomal protein S14-1 / BS-A


Mass: 7263.803 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: UniProt: P12878
#22: Protein 30S ribosomal protein S19 / / BS19


Mass: 10607.309 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Bacillus subtilis subsp. subtilis str. 168 (bacteria)
References: UniProt: P21476

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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

ComponentName: 30S ribosomal subunit in complex with 3' exonuclease RNase R
Type: RIBOSOME / Entity ID: all / Source: NATURAL
Molecular weightExperimental value: NO
Source (natural)Organism: Bacillus subtilis subsp. subtilis str. 168 (bacteria)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE-PROPANE

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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 FIELDBright-field microscopy / Nominal defocus max: 900 nm / Nominal defocus min: 400 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k)

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Processing

SoftwareName: REFMAC / Version: 5.8.0403 / Classification: refinement
EM software
IDNameVersionCategory
1crYOLO1.8.3particle selection
4RELION3.1CTF correction
10RELION3.1initial Euler assignment
11RELION3.1final Euler assignment
13RELION3.13D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 2303673
3D reconstructionResolution: 4.15 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 6540 / Symmetry type: POINT
RefinementResolution: 4.15→232 Å / Cor.coef. Fo:Fc: 0.791 / SU B: 59.691 / SU ML: 0.742 / ESU R: 1.321
Stereochemistry target values: MAXIMUM LIKELIHOOD WITH PHASES
Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflection
Rwork0.37658 --
obs0.37658 280570 100 %
Solvent computationSolvent model: PARAMETERS FOR MASK CACLULATION
Displacement parametersBiso mean: 230.775 Å2
Refinement stepCycle: 1 / Total: 51964
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
ELECTRON MICROSCOPYr_bond_refined_d0.0060.01155744
ELECTRON MICROSCOPYr_bond_other_d0.0010.01736625
ELECTRON MICROSCOPYr_angle_refined_deg1.3051.75781872
ELECTRON MICROSCOPYr_angle_other_deg0.6211.6185898
ELECTRON MICROSCOPYr_dihedral_angle_1_deg8.40252906
ELECTRON MICROSCOPYr_dihedral_angle_2_deg9.3335239
ELECTRON MICROSCOPYr_dihedral_angle_3_deg15104532
ELECTRON MICROSCOPYr_dihedral_angle_4_deg
ELECTRON MICROSCOPYr_chiral_restr0.060.211605
ELECTRON MICROSCOPYr_gen_planes_refined0.0070.0243790
ELECTRON MICROSCOPYr_gen_planes_other0.0050.0210471
ELECTRON MICROSCOPYr_nbd_refined
ELECTRON MICROSCOPYr_nbd_other
ELECTRON MICROSCOPYr_nbtor_refined
ELECTRON MICROSCOPYr_nbtor_other
ELECTRON MICROSCOPYr_xyhbond_nbd_refined
ELECTRON MICROSCOPYr_xyhbond_nbd_other
ELECTRON MICROSCOPYr_metal_ion_refined
ELECTRON MICROSCOPYr_metal_ion_other
ELECTRON MICROSCOPYr_symmetry_vdw_refined
ELECTRON MICROSCOPYr_symmetry_vdw_other
ELECTRON MICROSCOPYr_symmetry_hbond_refined
ELECTRON MICROSCOPYr_symmetry_hbond_other
ELECTRON MICROSCOPYr_symmetry_metal_ion_refined
ELECTRON MICROSCOPYr_symmetry_metal_ion_other
ELECTRON MICROSCOPYr_mcbond_it28.95926.56911690
ELECTRON MICROSCOPYr_mcbond_other28.95726.56911690
ELECTRON MICROSCOPYr_mcangle_it50.77247.78414574
ELECTRON MICROSCOPYr_mcangle_other50.77247.78614575
ELECTRON MICROSCOPYr_scbond_it24.18621.31644054
ELECTRON MICROSCOPYr_scbond_other24.18521.31644055
ELECTRON MICROSCOPYr_scangle_it
ELECTRON MICROSCOPYr_scangle_other41.70938.3867299
ELECTRON MICROSCOPYr_long_range_B_refined80.717251.18264869
ELECTRON MICROSCOPYr_long_range_B_other80.716251.18264870
ELECTRON MICROSCOPYr_rigid_bond_restr
ELECTRON MICROSCOPYr_sphericity_free
ELECTRON MICROSCOPYr_sphericity_bonded
LS refinement shellResolution: 4.15→4.258 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0 0 -
Rwork0.647 20740 -
obs--100 %

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