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Yorodumi- EMDB-11768: Bacterial 30S ribosomal subunit assembly complex state D (head domain) -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-11768 | |||||||||
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Title | Bacterial 30S ribosomal subunit assembly complex state D (head domain) | |||||||||
Map data | Multibody refinement map for 30S (head domain) | |||||||||
Sample |
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Keywords | Cryo-EM / 30S biogenesis / ribosome assembly / RbfA / RsgA / YjeQ / RimP / KsgA / RsmA / RIBOSOME | |||||||||
Function / homology | Function and homology information ribosomal small subunit assembly / small ribosomal subunit / cytosolic small ribosomal subunit / tRNA binding / rRNA binding / structural constituent of ribosome / translation / mRNA binding / RNA binding Similarity search - Function | |||||||||
Biological species | Escherichia coli (E. coli) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 4.9 Å | |||||||||
Authors | Schedlbauer A / Iturrioz I | |||||||||
Funding support | Spain, 2 items
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Citation | Journal: Sci Adv / Year: 2021 Title: A conserved rRNA switch is central to decoding site maturation on the small ribosomal subunit. Authors: Andreas Schedlbauer / Idoia Iturrioz / Borja Ochoa-Lizarralde / Tammo Diercks / Jorge Pedro López-Alonso / José Luis Lavin / Tatsuya Kaminishi / Retina Çapuni / Neha Dhimole / Elisa de ...Authors: Andreas Schedlbauer / Idoia Iturrioz / Borja Ochoa-Lizarralde / Tammo Diercks / Jorge Pedro López-Alonso / José Luis Lavin / Tatsuya Kaminishi / Retina Çapuni / Neha Dhimole / Elisa de Astigarraga / David Gil-Carton / Paola Fucini / Sean R Connell / Abstract: While a structural description of the molecular mechanisms guiding ribosome assembly in eukaryotic systems is emerging, bacteria use an unrelated core set of assembly factors for which high- ...While a structural description of the molecular mechanisms guiding ribosome assembly in eukaryotic systems is emerging, bacteria use an unrelated core set of assembly factors for which high-resolution structural information is still missing. To address this, we used single-particle cryo-electron microscopy to visualize the effects of bacterial ribosome assembly factors RimP, RbfA, RsmA, and RsgA on the conformational landscape of the 30 ribosomal subunit and obtained eight snapshots representing late steps in the folding of the decoding center. Analysis of these structures identifies a conserved secondary structure switch in the 16 ribosomal RNA central to decoding site maturation and suggests both a sequential order of action and molecular mechanisms for the assembly factors in coordinating and controlling this switch. Structural and mechanistic parallels between bacterial and eukaryotic systems indicate common folding features inherent to all ribosomes. | |||||||||
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_11768.map.gz | 144.2 MB | EMDB map data format | |
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Header (meta data) | emd-11768-v30.xml emd-11768.xml | 26.5 KB 26.5 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_11768_fsc.xml | 13.7 KB | Display | FSC data file |
Images | emd_11768.png | 130 KB | ||
Masks | emd_11768_msk_1.map | 216 MB | Mask map | |
Filedesc metadata | emd-11768.cif.gz | 7.9 KB | ||
Others | emd_11768_half_map_1.map.gz emd_11768_half_map_2.map.gz | 144.3 MB 144.3 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-11768 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-11768 | HTTPS FTP |
-Validation report
Summary document | emd_11768_validation.pdf.gz | 1017.5 KB | Display | EMDB validaton report |
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Full document | emd_11768_full_validation.pdf.gz | 1017.1 KB | Display | |
Data in XML | emd_11768_validation.xml.gz | 20.9 KB | Display | |
Data in CIF | emd_11768_validation.cif.gz | 27.4 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-11768 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-11768 | HTTPS FTP |
-Related structure data
Related structure data | 7afkMC 7af3C 7af5C 7af8C 7afaC 7afdC 7afhC 7afiC 7aflC 7afnC 7afoC 7afqC 7afrC 7bodC 7boeC 7bofC 7bogC 7bohC 7boiC 7narC 7nasC 7natC 7nauC 7navC 7naxC 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_11768.map.gz / Format: CCP4 / Size: 216 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Multibody refinement map for 30S (head domain) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.085 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Mask #1
File | emd_11768_msk_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: Multibody refinement half map 1 for 30S ribosome (head domain)
File | emd_11768_half_map_1.map | ||||||||||||
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Annotation | Multibody refinement half map 1 for 30S ribosome (head domain) | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Multibody refinement half map 2 for 30S ribosome (head domain)
File | emd_11768_half_map_2.map | ||||||||||||
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Annotation | Multibody refinement half map 2 for 30S ribosome (head domain) | ||||||||||||
Projections & Slices |
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Density Histograms |
-Sample components
+Entire : Bacterial 30S ribosomal subunit assembly complex state D (head domain)
+Supramolecule #1: Bacterial 30S ribosomal subunit assembly complex state D (head domain)
+Macromolecule #1: 16SrRNA (head domain of the 30S ribosome)
+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
+Macromolecule #9: 30S ribosomal protein S19
+Macromolecule #10: MAGNESIUM ION
+Macromolecule #11: ZINC ION
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.8 |
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Grid | Model: Quantifoil R2/2 / Support film - Material: CARBON / Support film - topology: CONTINUOUS |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK III |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Average electron dose: 46.1 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |