- EMDB-14121: Cryo-EM structure of the E.coli 50S ribosomal subunit in complex ... -
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Basic information
Entry
Database: EMDB / ID: EMD-14121
Title
Cryo-EM structure of the E.coli 50S ribosomal subunit in complex with the antibiotic Myxovalargin A.
Map data
Masked post processed map
Sample
Complex: Cryo-EM structure of the E.coli 50S ribosomal subunit in complex with the antibiotic Myxovalargin A.
RNA: x 2 types
Protein or peptide: x 27 types
Ligand: x 3 types
Keywords
Ribosome / Antibiotic / Myxovalargin A / MyxA
Function / homology
Function and homology information
transcriptional attenuation / positive regulation of ribosome biogenesis / endoribonuclease inhibitor activity / RNA-binding transcription regulator activity / negative regulation of cytoplasmic translation / DnaA-L2 complex / translation repressor activity / negative regulation of DNA-templated DNA replication initiation / mRNA regulatory element binding translation repressor activity / assembly of large subunit precursor of preribosome ...transcriptional attenuation / positive regulation of ribosome biogenesis / endoribonuclease inhibitor activity / RNA-binding transcription regulator activity / negative regulation of cytoplasmic translation / DnaA-L2 complex / translation repressor activity / negative regulation of DNA-templated DNA replication initiation / mRNA regulatory element binding translation repressor activity / assembly of large subunit precursor of preribosome / ribosome assembly / cytosolic ribosome assembly / response to reactive oxygen species / regulation of cell growth / DNA-templated transcription termination / response to radiation / mRNA 5'-UTR binding / large ribosomal subunit / transferase activity / ribosome binding / 5S rRNA binding / ribosomal large subunit assembly / large ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / cytoplasmic translation / tRNA binding / negative regulation of translation / rRNA binding / ribosome / structural constituent of ribosome / translation / response to antibiotic / negative regulation of DNA-templated transcription / mRNA binding / DNA binding / RNA binding / zinc ion binding / cytosol / cytoplasm Similarity search - Function
Ribosomal protein L25, short-form / : / Ribosomal protein L16 signature 1. / Ribosomal protein L21, conserved site / Ribosomal protein L21 signature. / Ribosomal protein L16 signature 2. / Ribosomal protein L16, conserved site / Ribosomal protein L6, conserved site / Ribosomal protein L6 signature 1. / : ...Ribosomal protein L25, short-form / : / Ribosomal protein L16 signature 1. / Ribosomal protein L21, conserved site / Ribosomal protein L21 signature. / Ribosomal protein L16 signature 2. / Ribosomal protein L16, conserved site / Ribosomal protein L6, conserved site / Ribosomal protein L6 signature 1. / : / Ribosomal protein L17 signature. / Ribosomal L25p family / Ribosomal protein L25 / Ribosomal protein L36 signature. / Ribosomal protein L28/L24 superfamily / Ribosomal protein L32p, bacterial type / Ribosomal protein L25/Gln-tRNA synthetase, N-terminal / Ribosomal protein L25/Gln-tRNA synthetase, anti-codon-binding domain superfamily / Ribosomal protein L33, conserved site / Ribosomal protein L33 signature. / Ribosomal protein L35, conserved site / Ribosomal protein L35 signature. / Ribosomal protein L28 / Ribosomal protein L35, non-mitochondrial / : / Ribosomal protein L18, bacterial-type / : / Ribosomal protein L6, bacterial-type / Ribosomal protein L36 / Ribosomal protein L36 superfamily / Ribosomal protein L36 / Ribosomal protein L19, conserved site / Ribosomal protein L19 signature. / Ribosomal protein L27, conserved site / Ribosomal protein L27 signature. / Ribosomal protein L20 signature. / Ribosomal protein L22, bacterial/chloroplast-type / Ribosomal protein L14P, bacterial-type / Ribosomal protein L34, conserved site / Ribosomal protein L34 signature. / Ribosomal protein L2, bacterial/organellar-type / Ribosomal protein L35 / Ribosomal protein L35 superfamily / Ribosomal protein L35 / Ribosomal protein L33 / Ribosomal protein L33 / Ribosomal L28 family / Ribosomal protein L33 superfamily / Ribosomal protein L16 / Ribosomal protein L28/L24 / Ribosomal protein L18 / Ribosomal L18 of archaea, bacteria, mitoch. and chloroplast / Ribosomal protein L30, bacterial-type / : / L28p-like / Ribosomal protein L27 / Ribosomal L27 protein / Ribosomal protein L20 / Ribosomal L32p protein family / Ribosomal protein L19 / Ribosomal protein L19 / Ribosomal protein L20 / Ribosomal protein L20, C-terminal / Ribosomal protein L19 superfamily / Ribosomal protein L21 / Ribosomal protein L17 / Ribosomal protein L32p / Ribosomal protein L17 superfamily / Ribosomal protein L17 / Ribosomal proteins 50S L24/mitochondrial 39S L24 / Ribosomal protein L21-like / L21-like superfamily / Ribosomal prokaryotic L21 protein / Ribosomal protein L24 / Ribosomal protein L34 / Ribosomal protein L34 / Ribosomal protein L13, bacterial-type / Ribosomal protein L3, bacterial/organelle-type / Ribosomal protein L15, bacterial-type / 50S ribosomal protein uL4 / Ribosomal protein L23/L25, conserved site / Ribosomal protein L23 signature. / Ribosomal protein L30, conserved site / Ribosomal protein L30 signature. / Ribosomal protein L2 signature. / Ribosomal protein L29, conserved site / Ribosomal protein L29 signature. / : / Ribosomal protein L2, conserved site / Ribosomal protein L10e/L16 / Ribosomal protein L10e/L16 superfamily / Ribosomal protein L16p/L10e / Ribosomal protein L15, conserved site / Ribosomal protein L15 signature. / Ribosomal protein L13 signature. / Ribosomal protein L6, alpha-beta domain / Ribosomal protein L6 / Ribosomal protein L6 / Ribosomal protein L6, alpha-beta domain superfamily / Ribosomal protein L13, conserved site Similarity search - Domain/homology
Large ribosomal subunit protein uL15 / Large ribosomal subunit protein bL19 / Large ribosomal subunit protein bL20 / Large ribosomal subunit protein bL27 / Large ribosomal subunit protein bL28 / Large ribosomal subunit protein uL29 / Large ribosomal subunit protein bL32 / Large ribosomal subunit protein bL33 / Large ribosomal subunit protein bL34 / Large ribosomal subunit protein bL35 ...Large ribosomal subunit protein uL15 / Large ribosomal subunit protein bL19 / Large ribosomal subunit protein bL20 / Large ribosomal subunit protein bL27 / Large ribosomal subunit protein bL28 / Large ribosomal subunit protein uL29 / Large ribosomal subunit protein bL32 / Large ribosomal subunit protein bL33 / Large ribosomal subunit protein bL34 / Large ribosomal subunit protein bL35 / Large ribosomal subunit protein bL36A / Large ribosomal subunit protein uL13 / Large ribosomal subunit protein uL14 / Large ribosomal subunit protein uL16 / Large ribosomal subunit protein uL23 / Large ribosomal subunit protein bL17 / Large ribosomal subunit protein bL21 / Large ribosomal subunit protein uL30 / Large ribosomal subunit protein uL6 / Large ribosomal subunit protein uL18 / Large ribosomal subunit protein uL2 / Large ribosomal subunit protein uL3 / Large ribosomal subunit protein uL24 / Large ribosomal subunit protein uL4 / Large ribosomal subunit protein uL22 / Large ribosomal subunit protein bL25 Similarity search - Component
Journal: J Am Chem Soc / Year: 2023 Title: The Myxobacterial Antibiotic Myxovalargin: Biosynthesis, Structural Revision, Total Synthesis, and Molecular Characterization of Ribosomal Inhibition. Authors: Timm O Koller / Ullrich Scheid / Teresa Kösel / Jennifer Herrmann / Daniel Krug / Helena I M Boshoff / Bertrand Beckert / Joanna C Evans / Jan Schlemmer / Becky Sloan / Danielle M Weiner / ...Authors: Timm O Koller / Ullrich Scheid / Teresa Kösel / Jennifer Herrmann / Daniel Krug / Helena I M Boshoff / Bertrand Beckert / Joanna C Evans / Jan Schlemmer / Becky Sloan / Danielle M Weiner / Laura E Via / Atica Moosa / Thomas R Ioerger / Michael Graf / Boris Zinshteyn / Maha Abdelshahid / Fabian Nguyen / Stefan Arenz / Franziska Gille / Maik Siebke / Tim Seedorf / Oliver Plettenburg / Rachel Green / Anna-Luisa Warnke / Joachim Ullrich / Ralf Warrass / Clifton E Barry / Digby F Warner / Valerie Mizrahi / Andreas Kirschning / Daniel N Wilson / Rolf Müller / Abstract: Resistance of bacterial pathogens against antibiotics is declared by WHO as a major global health threat. As novel antibacterial agents are urgently needed, we re-assessed the broad-spectrum ...Resistance of bacterial pathogens against antibiotics is declared by WHO as a major global health threat. As novel antibacterial agents are urgently needed, we re-assessed the broad-spectrum myxobacterial antibiotic myxovalargin and found it to be extremely potent against . To ensure compound supply for further development, we studied myxovalargin biosynthesis in detail enabling production via fermentation of a native producer. Feeding experiments as well as functional genomics analysis suggested a structural revision, which was eventually corroborated by the development of a concise total synthesis. The ribosome was identified as the molecular target based on resistant mutant sequencing, and a cryo-EM structure revealed that myxovalargin binds within and completely occludes the exit tunnel, consistent with a mode of action to arrest translation during a late stage of translation initiation. These studies open avenues for structure-based scaffold improvement toward development as an antibacterial agent.
Entire : Cryo-EM structure of the E.coli 50S ribosomal subunit in complex ...
Entire
Name: Cryo-EM structure of the E.coli 50S ribosomal subunit in complex with the antibiotic Myxovalargin A.
Components
Complex: Cryo-EM structure of the E.coli 50S ribosomal subunit in complex with the antibiotic Myxovalargin A.
RNA: 23S ribosomal RNA
RNA: 5S ribosomal RNA
Protein or peptide: 50S ribosomal protein L2
Protein or peptide: 50S ribosomal protein L3
Protein or peptide: 50S ribosomal protein L4
Protein or peptide: 50S ribosomal protein L6
Protein or peptide: 50S ribosomal protein L13
Protein or peptide: 50S ribosomal protein L14
Protein or peptide: 50S ribosomal protein L15
Protein or peptide: 50S ribosomal protein L16
Protein or peptide: 50S ribosomal protein L17
Protein or peptide: 50S ribosomal protein L18
Protein or peptide: 50S ribosomal protein L19
Protein or peptide: 50S ribosomal protein L20
Protein or peptide: 50S ribosomal protein L21
Protein or peptide: 50S ribosomal protein L22
Protein or peptide: 50S ribosomal protein L23
Protein or peptide: 50S ribosomal protein L24
Protein or peptide: 50S ribosomal protein L25
Protein or peptide: 50S ribosomal protein L27
Protein or peptide: 50S ribosomal protein L28
Protein or peptide: 50S ribosomal protein L29
Protein or peptide: 50S ribosomal protein L30
Protein or peptide: 50S ribosomal protein L32
Protein or peptide: 50S ribosomal protein L33
Protein or peptide: 50S ribosomal protein L34
Protein or peptide: 50S ribosomal protein L35
Protein or peptide: 50S ribosomal protein L36
Protein or peptide: Myxovalargin A
Ligand: MAGNESIUM ION
Ligand: ZINC ION
Ligand: water
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Supramolecule #1: Cryo-EM structure of the E.coli 50S ribosomal subunit in complex ...
Supramolecule
Name: Cryo-EM structure of the E.coli 50S ribosomal subunit in complex with the antibiotic Myxovalargin A. type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#29
Source (natural)
Organism: Escherichia coli (E. coli) / Strain: K-12 MG1650
Molecular weight
Theoretical: 1.356 MDa
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Macromolecule #1: 23S ribosomal RNA
Macromolecule
Name: 23S ribosomal RNA / type: rna / ID: 1 / Number of copies: 1
Details: Solutions were made fresh, pH was adjusted with potassium hydroxide at 4 degrees celcius and sterile filtered.
Grid
Model: Quantifoil R3/3 / Material: COPPER / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY / Support film - Film thickness: 300
Vitrification
Cryogen name: ETHANE-PROPANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV / Details: 2 seconds blotting before plunging..
Details
7 OD(A260/mL) were applied to the grid.
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Electron microscopy
Microscope
FEI TITAN KRIOS
Image recording
Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Average electron dose: 44.0 e/Å2
Electron beam
Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
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