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Yorodumi- EMDB-12179: Staphylococcus aureus 30S ribosomal subunit in presence of spermi... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-12179 | |||||||||
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Title | Staphylococcus aureus 30S ribosomal subunit in presence of spermidine (head only) | |||||||||
Map data | ||||||||||
Sample |
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Keywords | Pathogen / small ribosomal subunit / spermidine / RIBOSOME | |||||||||
Function / homology | Function and homology information ribosomal small subunit assembly / small ribosomal subunit / cytosolic small ribosomal subunit / tRNA binding / rRNA binding / ribosome / structural constituent of ribosome / translation / mRNA binding / RNA binding ...ribosomal small subunit assembly / small ribosomal subunit / cytosolic small ribosomal subunit / tRNA binding / rRNA binding / ribosome / structural constituent of ribosome / translation / mRNA binding / RNA binding / zinc ion binding / cytosol Similarity search - Function | |||||||||
Biological species | Staphylococcus aureus subsp. aureus NCTC 8325 (bacteria) / Staphylococcus aureus (strain NCTC 8325) (bacteria) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.6 Å | |||||||||
Authors | Belinite M / Khusainov I / Marzi S / Romby P / Yusupov M / Hashem Y | |||||||||
Funding support | France, 2 items
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Citation | Journal: Front Mol Biosci / Year: 2021 Title: Stabilization of Ribosomal RNA of the Small Subunit by Spermidine in . Authors: Margarita Belinite / Iskander Khusainov / Heddy Soufari / Stefano Marzi / Pascale Romby / Marat Yusupov / Yaser Hashem / Abstract: Cryo-electron microscopy is now used as a method of choice in structural biology for studying protein synthesis, a process mediated by the ribosome machinery. In order to achieve high-resolution ...Cryo-electron microscopy is now used as a method of choice in structural biology for studying protein synthesis, a process mediated by the ribosome machinery. In order to achieve high-resolution structures using this approach, one needs to obtain homogeneous and stable samples, which requires optimization of ribosome purification in a species-dependent manner. This is especially critical for the bacterial small ribosomal subunit that tends to be unstable in the absence of ligands. Here, we report a protocol for purification of stable 30 S from the Gram-positive bacterium and its cryo-EM structures: in presence of spermidine at a resolution ranging between 3.4 and 3.6 Å and in its absence at 5.3 Å. Using biochemical characterization and cryo-EM, we demonstrate the importance of spermidine for stabilization of the 30 S preserving favorable conformation of the helix 44. | |||||||||
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_12179.map.gz | 4.6 MB | EMDB map data format | |
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Header (meta data) | emd-12179-v30.xml emd-12179.xml | 18.6 KB 18.6 KB | Display Display | EMDB header |
Images | emd_12179.png | 101.6 KB | ||
Filedesc metadata | emd-12179.cif.gz | 6.4 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-12179 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-12179 | HTTPS FTP |
-Validation report
Summary document | emd_12179_validation.pdf.gz | 350.7 KB | Display | EMDB validaton report |
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Full document | emd_12179_full_validation.pdf.gz | 350.2 KB | Display | |
Data in XML | emd_12179_validation.xml.gz | 6.2 KB | Display | |
Data in CIF | emd_12179_validation.cif.gz | 7 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-12179 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-12179 | HTTPS FTP |
-Related structure data
Related structure data | 7bgeMC 7bgdC 7kwgC 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_12179.map.gz / Format: CCP4 / Size: 75.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.19 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 : Staphylococcus aureus 30S ribosomal subunit in presence of spermi...
+Supramolecule #1: Staphylococcus aureus 30S ribosomal subunit in presence of spermi...
+Macromolecule #1: 16S ribosomal RNA
+Macromolecule #2: 30S ribosomal protein S2
+Macromolecule #3: 30S ribosomal protein S3
+Macromolecule #4: 30S ribosomal protein S7
+Macromolecule #5: 30S ribosomal protein S9
+Macromolecule #6: 30S ribosomal protein S10
+Macromolecule #7: 30S ribosomal protein S13
+Macromolecule #8: 30S ribosomal protein S14 type Z
+Macromolecule #9: 30S ribosomal protein S19
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.5 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TALOS ARCTICA |
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Image recording | Film or detector model: FEI FALCON III (4k x 4k) / Average electron dose: 3.0 e/Å2 |
Electron beam | Acceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: OTHER / Imaging mode: BRIGHT FIELD |
Experimental equipment | Model: Talos Arctica / Image courtesy: FEI Company |
-Image processing
Startup model | Type of model: PDB ENTRY PDB model - PDB ID: |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 529602 |
Initial angle assignment | Type: PROJECTION MATCHING |
Final angle assignment | Type: PROJECTION MATCHING |