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- PDB-8ca7: Omadacycline and spectinomycin bound to the 30S ribosomal subunit head -

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Basic information

Entry
Database: PDB / ID: 8ca7
TitleOmadacycline and spectinomycin bound to the 30S ribosomal subunit head
Components
  • (Small ribosomal subunit protein ...) x 7
  • 16S rRNA
  • 30S ribosomal protein S7
KeywordsRIBOSOME / antibiotics / spectinomycin / omadacycline
Function / homology
Function and homology information


transcription antitermination factor activity, RNA binding / transcription elongation factor complex / regulation of DNA-templated transcription elongation / transcription antitermination / maintenance of translational fidelity / ribosome biogenesis / ribosomal small subunit assembly / small ribosomal subunit / cytosolic small ribosomal subunit / cytoplasmic translation ...transcription antitermination factor activity, RNA binding / transcription elongation factor complex / regulation of DNA-templated transcription elongation / transcription antitermination / maintenance of translational fidelity / ribosome biogenesis / ribosomal small subunit assembly / small ribosomal subunit / cytosolic small ribosomal subunit / cytoplasmic translation / tRNA binding / negative regulation of translation / rRNA binding / ribosome / structural constituent of ribosome / translation / response to antibiotic / mRNA binding / RNA binding / membrane / cytosol / cytoplasm
Similarity search - Function
Ribosomal protein S14, bacterial/plastid / Ribosomal protein S3, bacterial-type / Ribosomal protein S19, bacterial-type / Ribosomal protein S13, bacterial-type / Ribosomal protein S7, bacterial/organellar-type / Ribosomal protein S9, bacterial/plastid / Ribosomal protein S5, bacterial-type / K Homology domain / K homology RNA-binding domain / Ribosomal protein S10, conserved site ...Ribosomal protein S14, bacterial/plastid / Ribosomal protein S3, bacterial-type / Ribosomal protein S19, bacterial-type / Ribosomal protein S13, bacterial-type / Ribosomal protein S7, bacterial/organellar-type / Ribosomal protein S9, bacterial/plastid / Ribosomal protein S5, bacterial-type / K Homology domain / K homology RNA-binding domain / Ribosomal protein S10, conserved site / Ribosomal protein S10 signature. / Ribosomal protein S3, conserved site / Ribosomal protein S3 signature. / Ribosomal protein S14, conserved site / Ribosomal protein S14 signature. / KH domain / Type-2 KH domain profile. / K Homology domain, type 2 / Ribosomal protein S3, C-terminal / Ribosomal protein S3, C-terminal domain / Ribosomal protein S3, C-terminal domain superfamily / Ribosomal protein S15/S19, conserved site / Ribosomal protein S19 signature. / Ribosomal protein S10 / Ribosomal protein S19/S15 / Ribosomal protein S19/S15, superfamily / Ribosomal protein S19 / Ribosomal protein S5, N-terminal, conserved site / Ribosomal protein S5 signature. / Ribosomal protein S7, conserved site / Ribosomal protein S7 signature. / Ribosomal protein S5 / S5 double stranded RNA-binding domain profile. / K homology domain superfamily, prokaryotic type / Ribosomal protein S5, N-terminal / Ribosomal protein S5, N-terminal domain / Ribosomal protein S5, C-terminal / Ribosomal protein S5, C-terminal domain / Ribosomal protein S13, conserved site / Ribosomal protein S13 signature. / Ribosomal protein S13 / 30s ribosomal protein S13, C-terminal / Ribosomal protein S13/S18 / Ribosomal protein S13 family profile. / Ribosomal protein S14 / Ribosomal protein S14p/S29e / K homology domain-like, alpha/beta / Ribosomal protein S10p/S20e / Ribosomal protein S9, conserved site / Ribosomal protein S9 signature. / Ribosomal protein S10 domain / Ribosomal protein S10 domain superfamily / Ribosomal protein S10p/S20e / Ribosomal protein S13-like, H2TH / Ribosomal protein S5/S7 / Ribosomal protein S7 domain / Ribosomal protein S7 domain superfamily / Ribosomal protein S7p/S5e / Ribosomal protein S9 / Ribosomal protein S9/S16 / Ribosomal protein S5 domain 2-type fold, subgroup / Ribosomal protein S5 domain 2-type fold
Similarity search - Domain/homology
: / SPECTINOMYCIN / Omadacycline / : / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Small ribosomal subunit protein uS7 / Small ribosomal subunit protein uS10 ...: / SPECTINOMYCIN / Omadacycline / : / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Small ribosomal subunit protein uS7 / Small ribosomal subunit protein uS10 / Small ribosomal subunit protein uS13 / Small ribosomal subunit protein uS19 / Small ribosomal subunit protein uS3 / Small ribosomal subunit protein uS5 / Small ribosomal subunit protein uS9 / Small ribosomal subunit protein uS14
Similarity search - Component
Biological speciesEscherichia coli BW25113 (bacteria)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.06 Å
AuthorsPaternoga, H. / Crowe-McAuliffe, C. / Wilson, D.N.
Funding supportEuropean Union, 3items
OrganizationGrant numberCountry
Other governmentDLR01Kl1820
iNEXT-Discovery871037European Union
Other governmentLM2018127
CitationJournal: Nat Struct Mol Biol / Year: 2023
Title: Structural conservation of antibiotic interaction with ribosomes.
Authors: Helge Paternoga / Caillan Crowe-McAuliffe / Lars V Bock / Timm O Koller / Martino Morici / Bertrand Beckert / Alexander G Myasnikov / Helmut Grubmüller / Jiří Nováček / Daniel N Wilson /
Abstract: The ribosome is a major target for clinically used antibiotics, but multidrug resistant pathogenic bacteria are making our current arsenal of antimicrobials obsolete. Here we present cryo-electron- ...The ribosome is a major target for clinically used antibiotics, but multidrug resistant pathogenic bacteria are making our current arsenal of antimicrobials obsolete. Here we present cryo-electron-microscopy structures of 17 distinct compounds from six different antibiotic classes bound to the bacterial ribosome at resolutions ranging from 1.6 to 2.2 Å. The improved resolution enables a precise description of antibiotic-ribosome interactions, encompassing solvent networks that mediate multiple additional interactions between the drugs and their target. Our results reveal a high structural conservation in the binding mode between antibiotics with the same scaffold, including ordered water molecules. Water molecules are visualized within the antibiotic binding sites that are preordered, become ordered in the presence of the drug and that are physically displaced on drug binding. Insight into RNA-ligand interactions will facilitate development of new antimicrobial agents, as well as other RNA-targeting therapies.
History
DepositionJan 24, 2023Deposition site: PDBE / Processing site: PDBE
Revision 1.0Aug 2, 2023Provider: repository / Type: Initial release
Revision 1.1Aug 9, 2023Group: Database references / Category: citation
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_DOI / _citation.year
Revision 1.2Aug 16, 2023Group: Data collection / Database references
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / citation / citation_author
Item: _citation.pdbx_database_id_PubMed / _citation.title ..._citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID / _citation_author.name
Revision 1.3Sep 20, 2023Group: Database references / Refinement description / Category: citation / citation_author / em_3d_fitting_list
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID / _em_3d_fitting_list.initial_refinement_model_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: 16S rRNA
C: Small ribosomal subunit protein uS3
E: Small ribosomal subunit protein uS5
G: 30S ribosomal protein S7
I: Small ribosomal subunit protein uS9
J: Small ribosomal subunit protein uS10
M: Small ribosomal subunit protein uS13
N: Small ribosomal subunit protein uS14
S: Small ribosomal subunit protein uS19
hetero molecules


Theoretical massNumber of molelcules
Total (without water)626,74151
Polymers624,6739
Non-polymers2,06842
Water9,782543
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area44690 Å2
ΔGint-565 kcal/mol
Surface area92800 Å2
MethodPISA

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Components

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Small ribosomal subunit protein ... , 7 types, 7 molecules CEIJMNS

#2: Protein Small ribosomal subunit protein uS3 / 30S ribosomal protein S3


Mass: 26031.316 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli BW25113 (bacteria) / References: UniProt: P0A7V3
#3: Protein Small ribosomal subunit protein uS5 / 30S ribosomal protein S5


Mass: 17629.398 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli BW25113 (bacteria) / References: UniProt: P0A7W1
#5: Protein Small ribosomal subunit protein uS9 / 30S ribosomal protein S9


Mass: 14886.270 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli BW25113 (bacteria) / References: UniProt: P0A7X3
#6: Protein Small ribosomal subunit protein uS10 / 30S ribosomal protein S10 / Transcription termination/antitermination protein NusE


Mass: 11755.597 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli BW25113 (bacteria) / References: UniProt: P0A7R5
#7: Protein Small ribosomal subunit protein uS13 / 30S ribosomal protein S13


Mass: 13128.467 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli BW25113 (bacteria) / References: UniProt: P0A7S9
#8: Protein Small ribosomal subunit protein uS14 / 30S ribosomal protein S14


Mass: 11606.560 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli BW25113 (bacteria) / References: UniProt: P0AG59
#9: Protein Small ribosomal subunit protein uS19 / 30S ribosomal protein S19


Mass: 10455.355 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli BW25113 (bacteria) / References: UniProt: P0A7U3

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RNA chain / Protein , 2 types, 2 molecules AG

#1: RNA chain 16S rRNA


Mass: 499124.750 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli BW25113 (bacteria) / References: GenBank: 2073407
#4: Protein 30S ribosomal protein S7 / Small ribosomal subunit protein uS7


Mass: 20055.156 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli BW25113 (bacteria) / References: UniProt: P02359

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Non-polymers , 5 types, 585 molecules

#10: Chemical
ChemComp-K / POTASSIUM ION


Mass: 39.098 Da / Num. of mol.: 14 / Source method: obtained synthetically / Formula: K
#11: Chemical ChemComp-U3B / Omadacycline / Omadacycline / (4S,4aS,5aR,12aR)-4,7-bis(dimethylamino)-9-[(2,2-dimethylpropylamino)methyl]-1,10,11,12a-tetrakis(oxidanyl)-3,12-bis(oxidanylidene)-4a,5,5a,6-tetrahydro-4H-tetracene-2-carboxamide


Mass: 556.650 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C29H40N4O7 / Feature type: SUBJECT OF INVESTIGATION
#12: Chemical ChemComp-SCM / SPECTINOMYCIN / ACTINOSPECTACIN / ESPECTINOMICINA / CHX-3101


Mass: 332.350 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C14H24N2O7 / Feature type: SUBJECT OF INVESTIGATION / Comment: antibiotic*YM
#13: Chemical...
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 26 / Source method: obtained synthetically / Formula: Mg
#14: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 543 / Source method: isolated from a natural source / Formula: H2O

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Details

Has ligand of interestY

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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: Ribosomal small subunit head / Type: RIBOSOME / Entity ID: #1-#9 / Source: NATURAL
Molecular weightExperimental value: NO
Source (natural)Organism: Escherichia coli BW25113 (bacteria)
Buffer solutionpH: 7.5
Buffer component
IDConc.NameFormulaBuffer-ID
150 mMHEPESC8H18N2O4S1
225 mMMagnesium acetateMg(OAc)21
380 mMAmmonium chlorideNH4Cl1
4100 mMPotassium acetateKOAc1
51 mMDTTC4H10O2S21
60.05 % (w/v)DDMC24H46O111
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationCryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 K

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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: 1600 nm / Nominal defocus min: 400 nm
Image recordingAverage exposure time: 4 sec. / Electron dose: 44 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of real images: 24195

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Processing

EM softwareName: REFMAC / Version: 5.8.0415 / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.06 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 514855 / Symmetry type: POINT
Atomic model buildingPDB-ID: 7k00

7k00


Accession code: 7k00 / Source name: PDB / Type: experimental model
RefinementResolution: 2.06→134.11 Å / Cor.coef. Fo:Fc: 0.917 / SU B: 4.53 / SU ML: 0.116 / ESU R: 0.134
Stereochemistry target values: MAXIMUM LIKELIHOOD WITH PHASES
Details: HYDROGENS HAVE BEEN USED IF PRESENT IN THE INPUT
RfactorNum. reflection% reflection
Rwork0.32797 --
obs0.32797 532423 100 %
Solvent computationSolvent model: PARAMETERS FOR MASK CACLULATION
Displacement parametersBiso mean: 58.887 Å2
Refinement stepCycle: 1 / Total: 18093
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
ELECTRON MICROSCOPYr_bond_refined_d0.0070.01119043
ELECTRON MICROSCOPYr_bond_other_d00.01711894
ELECTRON MICROSCOPYr_angle_refined_deg1.2271.78427939
ELECTRON MICROSCOPYr_angle_other_deg0.481.61627916
ELECTRON MICROSCOPYr_dihedral_angle_1_deg6.9175836
ELECTRON MICROSCOPYr_dihedral_angle_2_deg11.535.236106
ELECTRON MICROSCOPYr_dihedral_angle_3_deg13.848101309
ELECTRON MICROSCOPYr_dihedral_angle_4_deg
ELECTRON MICROSCOPYr_chiral_restr0.0490.23539
ELECTRON MICROSCOPYr_gen_planes_refined0.0060.0214194
ELECTRON MICROSCOPYr_gen_planes_other0.0020.023556
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_it2.4435.9153380
ELECTRON MICROSCOPYr_mcbond_other2.4435.9153380
ELECTRON MICROSCOPYr_mcangle_it4.01810.6564204
ELECTRON MICROSCOPYr_mcangle_other4.01810.6574205
ELECTRON MICROSCOPYr_scbond_it2.475.99915663
ELECTRON MICROSCOPYr_scbond_other2.4686.01115582
ELECTRON MICROSCOPYr_scangle_it
ELECTRON MICROSCOPYr_scangle_other3.97110.95423736
ELECTRON MICROSCOPYr_long_range_B_refined6.9864.8323642
ELECTRON MICROSCOPYr_long_range_B_other6.95864.9523551
ELECTRON MICROSCOPYr_rigid_bond_restr
ELECTRON MICROSCOPYr_sphericity_free
ELECTRON MICROSCOPYr_sphericity_bonded
LS refinement shellResolution: 2.06→2.114 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0 0 -
Rwork0.703 39399 -
obs--100 %

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