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Yorodumi- EMDB-3748: Cryo-EM reconstruction of the small subunit of the Mycobacterium ... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-3748 | |||||||||
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Title | Cryo-EM reconstruction of the small subunit of the Mycobacterium smegmatis ribosome | |||||||||
Map data | ||||||||||
Sample |
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Keywords | ribosome / translation | |||||||||
Function / homology | Function and homology information ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / tRNA binding / rRNA binding / ribosome / structural constituent of ribosome / translation ...ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / tRNA binding / rRNA binding / ribosome / structural constituent of ribosome / translation / ribonucleoprotein complex / mRNA binding / RNA binding / zinc ion binding / metal ion binding / cytoplasm / cytosol Similarity search - Function | |||||||||
Biological species | Mycobacterium smegmatis str. MC2 155 (bacteria) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.45 Å | |||||||||
Authors | Hentschel J / Burnside C | |||||||||
Funding support | Switzerland, 2 items
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Citation | Journal: Cell Rep / Year: 2017 Title: The Complete Structure of the Mycobacterium smegmatis 70S Ribosome. Authors: Jendrik Hentschel / Chloe Burnside / Ingrid Mignot / Marc Leibundgut / Daniel Boehringer / Nenad Ban / Abstract: The ribosome carries out the synthesis of proteins in every living cell. It consequently represents a frontline target in anti-microbial therapy. Tuberculosis ranks among the leading causes of death ...The ribosome carries out the synthesis of proteins in every living cell. It consequently represents a frontline target in anti-microbial therapy. Tuberculosis ranks among the leading causes of death worldwide, due in large part to the combination of difficult-to-treat latency and antibiotic resistance. Here, we present the 3.3-Å cryo-EM structure of the 70S ribosome of Mycobacterium smegmatis, a close relative to the human pathogen Mycobacterium tuberculosis. The structure reveals two additional ribosomal proteins and localizes them to the vicinity of drug-target sites in both the catalytic center and the decoding site of the ribosome. Furthermore, we visualized actinobacterium-specific rRNA and protein expansions that extensively remodel the ribosomal surface with implications for polysome organization. Our results provide a foundation for understanding the idiosyncrasies of mycobacterial translation and reveal atomic details of the structure that will facilitate the design of anti-tubercular therapeutics. | |||||||||
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_3748.map.gz | 35.7 MB | EMDB map data format | |
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Header (meta data) | emd-3748-v30.xml emd-3748.xml | 35.2 KB 35.2 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_3748_fsc.xml | 10.1 KB | Display | FSC data file |
Images | emd_3748.png | 196.9 KB | ||
Filedesc metadata | emd-3748.cif.gz | 8.7 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-3748 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-3748 | HTTPS FTP |
-Validation report
Summary document | emd_3748_validation.pdf.gz | 361.7 KB | Display | EMDB validaton report |
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Full document | emd_3748_full_validation.pdf.gz | 360.8 KB | Display | |
Data in XML | emd_3748_validation.xml.gz | 10.6 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-3748 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-3748 | HTTPS FTP |
-Related structure data
Related structure data | 5o5jMC 3750C 3751C 5o60C 5o61C C: citing same article (ref.) M: atomic model generated by this map |
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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_3748.map.gz / Format: CCP4 / Size: 38.4 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Voxel size | X=Y=Z: 1.39 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 : 30S small ribosomal subunit
+Supramolecule #1: 30S small ribosomal subunit
+Macromolecule #1: 16S rRNA
+Macromolecule #22: tRNA-Phe anticodon stem
+Macromolecule #23: mRNA fragment
+Macromolecule #2: Conserved domain protein
+Macromolecule #3: 30S ribosomal protein S3
+Macromolecule #4: 30S ribosomal protein S4
+Macromolecule #5: 30S ribosomal protein S5
+Macromolecule #6: 30S ribosomal protein S6
+Macromolecule #7: 30S ribosomal protein S7
+Macromolecule #8: 30S ribosomal protein S8
+Macromolecule #9: 30S ribosomal protein S9
+Macromolecule #10: 30S ribosomal protein S10
+Macromolecule #11: 30S ribosomal protein S11
+Macromolecule #12: 30S ribosomal protein S12
+Macromolecule #13: 30S ribosomal protein S13
+Macromolecule #14: 30S ribosomal protein S14 type Z
+Macromolecule #15: 30S ribosomal protein S15
+Macromolecule #16: 30S ribosomal protein S16
+Macromolecule #17: 30S ribosomal protein S17
+Macromolecule #18: 30S ribosomal protein S18 2
+Macromolecule #19: 30S ribosomal protein S19
+Macromolecule #20: 30S ribosomal protein S20
+Macromolecule #21: 30S ribosomal protein S2
+Macromolecule #24: 50S ribosomal protein L31
+Macromolecule #25: MAGNESIUM ION
+Macromolecule #26: ZINC ION
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.5 |
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Grid | Model: Quantifoil R2/2 / Material: COPPER |
Vitrification | Cryogen name: ETHANE-PROPANE / Chamber humidity: 96 % / Instrument: FEI VITROBOT MARK I |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: FEI FALCON II (4k x 4k) / Detector mode: INTEGRATING / Average electron dose: 20.0 e/Å2 / Details: FEI EPU data collection |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Calibrated magnification: 100719 / Illumination mode: FLOOD BEAM / 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 |
+Image processing
-Atomic model buiding 1
Refinement | Protocol: OTHER |
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Output model | PDB-5o5j: |