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Yorodumi- EMDB-5771: Electron cryo-microscopy of an ErmBL-stalled E. coli 70S ribosome -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-5771 | |||||||||
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Title | Electron cryo-microscopy of an ErmBL-stalled E. coli 70S ribosome | |||||||||
Map data | Reconstruction of an ErmBL-stalled E. coli 70S ribosome | |||||||||
Sample |
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Function / homology | Function and homology information stringent response / transcriptional attenuation / endoribonuclease inhibitor activity / RNA-binding transcription regulator activity / positive regulation of ribosome biogenesis / negative regulation of cytoplasmic translation / translational termination / DnaA-L2 complex / translation repressor activity / negative regulation of DNA-templated DNA replication initiation ...stringent response / transcriptional attenuation / endoribonuclease inhibitor activity / RNA-binding transcription regulator activity / positive regulation of ribosome biogenesis / negative regulation of cytoplasmic translation / translational termination / DnaA-L2 complex / translation repressor activity / negative regulation of DNA-templated DNA replication initiation / mRNA regulatory element binding translation repressor activity / ribosome assembly / assembly of large subunit precursor of preribosome / 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 / ribosome binding / large ribosomal subunit rRNA binding / 5S rRNA binding / transferase activity / ribosomal large subunit assembly / cytoplasmic translation / cytosolic large ribosomal subunit / 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 | |||||||||
Biological species | Escherichia coli (E. coli) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 6.6 Å | |||||||||
Authors | Arenz S / Ramu H / Gupta P / Berninghausen O / Beckmann R / Vazquez-Laslop N / Mankin AS / Wilson DN | |||||||||
Citation | Journal: Nat Commun / Year: 2014 Title: Molecular basis for erythromycin-dependent ribosome stalling during translation of the ErmBL leader peptide. Authors: Stefan Arenz / Haripriya Ramu / Pulkit Gupta / Otto Berninghausen / Roland Beckmann / Nora Vázquez-Laslop / Alexander S Mankin / Daniel N Wilson / Abstract: In bacteria, ribosome stalling during translation of ErmBL leader peptide occurs in the presence of the antibiotic erythromycin and leads to induction of expression of the downstream macrolide ...In bacteria, ribosome stalling during translation of ErmBL leader peptide occurs in the presence of the antibiotic erythromycin and leads to induction of expression of the downstream macrolide resistance methyltransferase ErmB. The lack of structures of drug-dependent stalled ribosome complexes (SRCs) has limited our mechanistic understanding of this regulatory process. Here we present a cryo-electron microscopy structure of the erythromycin-dependent ErmBL-SRC. The structure reveals that the antibiotic does not interact directly with ErmBL, but rather redirects the path of the peptide within the tunnel. Furthermore, we identify a key peptide-ribosome interaction that defines an important relay pathway from the ribosomal tunnel to the peptidyltransferase centre (PTC). The PTC of the ErmBL-SRC appears to adopt an uninduced state that prevents accommodation of Lys-tRNA at the A-site, thus providing structural basis for understanding how the drug and the nascent peptide cooperate to inhibit peptide bond formation and induce translation arrest. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_5771.map.gz | 177.4 MB | EMDB map data format | |
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Header (meta data) | emd-5771-v30.xml emd-5771.xml | 8.8 KB 8.8 KB | Display Display | EMDB header |
Images | emd_5771.png | 109.9 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-5771 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-5771 | HTTPS FTP |
-Validation report
Summary document | emd_5771_validation.pdf.gz | 425.7 KB | Display | EMDB validaton report |
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Full document | emd_5771_full_validation.pdf.gz | 425.3 KB | Display | |
Data in XML | emd_5771_validation.xml.gz | 6.6 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-5771 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-5771 | HTTPS FTP |
-Related structure data
Related structure data | 3j5lMC M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_5771.map.gz / Format: CCP4 / Size: 185.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Reconstruction of an ErmBL-stalled E. coli 70S ribosome | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.0605 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Sample components
-Entire : ErmBL-stalled E. coli 70S ribosome
Entire | Name: ErmBL-stalled E. coli 70S ribosome |
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Components |
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-Supramolecule #1000: ErmBL-stalled E. coli 70S ribosome
Supramolecule | Name: ErmBL-stalled E. coli 70S ribosome / type: sample / ID: 1000 / Number unique components: 1 |
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-Supramolecule #1: ErmBL-stalled 70S ribosome
Supramolecule | Name: ErmBL-stalled 70S ribosome / type: complex / ID: 1 / Recombinant expression: No / Database: NCBI / Ribosome-details: ribosome-prokaryote: ALL |
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Source (natural) | Organism: Escherichia coli (E. coli) |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.4 |
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Vitrification | Cryogen name: ETHANE / Instrument: FEI VITROBOT MARK IV |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Date | Mar 14, 2013 |
Image recording | Category: CCD / Film or detector model: TVIPS TEMCAM-F416 (4k x 4k) / Number real images: 17906 / Average electron dose: 20 e/Å2 |
Electron beam | Acceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Calibrated magnification: 148721 / Illumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 4.5 µm / Nominal defocus min: 1.0 µm / Nominal magnification: 148721 |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
CTF correction | Details: Defocus groups |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 6.6 Å / Resolution method: OTHER / Software - Name: SPIDER / Number images used: 349744 |