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Yorodumi- EMDB-4071: Structure of the 40S ABCE1 post-splitting complex in ribosome rec... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-4071 | |||||||||
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Title | Structure of the 40S ABCE1 post-splitting complex in ribosome recycling and translation initiation | |||||||||
Map data | ||||||||||
Sample |
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Function / homology | Function and homology information ribosome disassembly / Negative regulators of DDX58/IFIH1 signaling / positive regulation of translational fidelity / RMTs methylate histone arginines / Protein methylation / mTORC1-mediated signalling / Protein hydroxylation / Formation of the ternary complex, and subsequently, the 43S complex / Translation initiation complex formation / Ribosomal scanning and start codon recognition ...ribosome disassembly / Negative regulators of DDX58/IFIH1 signaling / positive regulation of translational fidelity / RMTs methylate histone arginines / Protein methylation / mTORC1-mediated signalling / Protein hydroxylation / Formation of the ternary complex, and subsequently, the 43S complex / Translation initiation complex formation / Ribosomal scanning and start codon recognition / Major pathway of rRNA processing in the nucleolus and cytosol / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / Formation of a pool of free 40S subunits / L13a-mediated translational silencing of Ceruloplasmin expression / ribosomal small subunit binding / 90S preribosome / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / regulation of translational fidelity / Ub-specific processing proteases / ribosomal subunit export from nucleus / translational termination / endonucleolytic cleavage in ITS1 to separate SSU-rRNA from 5.8S rRNA and LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / translation initiation factor activity / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosome assembly / ribosomal large subunit biogenesis / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / small-subunit processome / positive regulation of translation / translational initiation / maintenance of translational fidelity / cytoplasmic stress granule / rRNA processing / ribosomal small subunit biogenesis / small ribosomal subunit rRNA binding / ribosome biogenesis / ribosomal small subunit assembly / cytosolic small ribosomal subunit / cytoplasmic translation / rRNA binding / ribosome / structural constituent of ribosome / iron ion binding / translation / mRNA binding / nucleolus / ATP hydrolysis activity / mitochondrion / RNA binding / nucleoplasm / ATP binding / nucleus / metal ion binding / cytosol / cytoplasm Similarity search - Function | |||||||||
Biological species | Saccharomyces cerevisiae (brewer's yeast) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.9 Å | |||||||||
Authors | Heuer A / Gerovac M / Schmidt C / Trowitzsch S / Preis A / Koetter P / Berninghausen O / Becker T / Beckmann R / Tampe R | |||||||||
Citation | Journal: Nat Struct Mol Biol / Year: 2017 Title: Structure of the 40S-ABCE1 post-splitting complex in ribosome recycling and translation initiation. Authors: André Heuer / Milan Gerovac / Christian Schmidt / Simon Trowitzsch / Anne Preis / Peter Kötter / Otto Berninghausen / Thomas Becker / Roland Beckmann / Robert Tampé / Abstract: The essential ATP-binding cassette protein ABCE1 splits 80S ribosomes into 60S and 40S subunits after canonical termination or quality-control-based mRNA surveillance processes. However, the ...The essential ATP-binding cassette protein ABCE1 splits 80S ribosomes into 60S and 40S subunits after canonical termination or quality-control-based mRNA surveillance processes. However, the underlying splitting mechanism remains enigmatic. Here, we present a cryo-EM structure of the yeast 40S-ABCE1 post-splitting complex at 3.9-Å resolution. Compared to the pre-splitting state, we observe repositioning of ABCE1's iron-sulfur cluster domain, which rotates 150° into a binding pocket on the 40S subunit. This repositioning explains a newly observed anti-association activity of ABCE1. Notably, the movement implies a collision with A-site factors, thus explaining the splitting mechanism. Disruption of key interactions in the post-splitting complex impairs cellular homeostasis. Additionally, the structure of a native post-splitting complex reveals ABCE1 to be part of the 43S initiation complex, suggesting a coordination of termination, recycling, and initiation. | |||||||||
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_4071.map.gz | 202.2 MB | EMDB map data format | |
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Header (meta data) | emd-4071-v30.xml emd-4071.xml | 12.1 KB 12.1 KB | Display Display | EMDB header |
Images | emd_4071.jpg emd_4071.png | 214.9 KB 153.6 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-4071 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-4071 | HTTPS FTP |
-Validation report
Summary document | emd_4071_validation.pdf.gz | 304.8 KB | Display | EMDB validaton report |
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Full document | emd_4071_full_validation.pdf.gz | 303.9 KB | Display | |
Data in XML | emd_4071_validation.xml.gz | 6.6 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-4071 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-4071 | HTTPS FTP |
-Related structure data
Related structure data | 5ll6MC 3452C 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_4071.map.gz / Format: CCP4 / Size: 216 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: 1.084 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 : 40S-ABCE1 complex
Entire | Name: 40S-ABCE1 complex |
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Components |
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-Supramolecule #1: 40S-ABCE1 complex
Supramolecule | Name: 40S-ABCE1 complex / type: complex / ID: 1 / Parent: 0 |
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Source (natural) | Organism: Saccharomyces cerevisiae (brewer's yeast) |
Molecular weight | Theoretical: 1.2 MDa |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.4 Component:
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Grid | Model: Quantifoil R3/3 / Material: COPPER/PALLADIUM / Support film - Material: CARBON / Support film - topology: CONTINUOUS / Support film - Film thickness: 2.0 nm / Pretreatment - Type: GLOW DISCHARGE | |||||||||||||||
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 278 K / Instrument: FEI VITROBOT MARK IV | |||||||||||||||
Details | Purified 40S ribosomal subunits were reconstituted with purified, recombinantly expressed ABCE1 |
-Electron microscopy
Microscope | FEI TITAN |
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Image recording | Film or detector model: FEI FALCON II (4k x 4k) / Average electron dose: 2.4 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Calibrated defocus min: 0.8 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.4 µm |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
+Image processing
-Atomic model buiding 1
Refinement | Space: REAL / Protocol: FLEXIBLE FIT |
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Output model | PDB-5ll6: |