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Yorodumi- EMDB-11608: Structure of a crosslinked yeast ABCE1-bound 43S pre-initiation c... -
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Basic information
| Entry | Database: EMDB / ID: EMD-11608 | |||||||||
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| Title | Structure of a crosslinked yeast ABCE1-bound 43S pre-initiation complex | |||||||||
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Keywords | Translation / Initiation / Ribosome Recycling / ABC Proteins / RIBOSOME | |||||||||
| Function / homology | Function and homology informationeukaryotic translation initiation factor 3 complex / formation of cytoplasmic translation initiation complex / eukaryotic 43S preinitiation complex / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / eukaryotic 48S preinitiation complex / regulation of amino acid metabolic process / negative regulation of glucose mediated signaling pathway / positive regulation of translational fidelity / Negative regulators of DDX58/IFIH1 signaling / RMTs methylate histone arginines ...eukaryotic translation initiation factor 3 complex / formation of cytoplasmic translation initiation complex / eukaryotic 43S preinitiation complex / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / eukaryotic 48S preinitiation complex / regulation of amino acid metabolic process / negative regulation of glucose mediated signaling pathway / positive regulation of translational fidelity / Negative regulators of DDX58/IFIH1 signaling / RMTs methylate histone arginines / Protein methylation / ribosome disassembly / mTORC1-mediated signalling / Protein hydroxylation / nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / ribosome-associated ubiquitin-dependent protein catabolic process / GDP-dissociation inhibitor activity / positive regulation of nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / nonfunctional rRNA decay / Formation of the ternary complex, and subsequently, the 43S complex / Translation initiation complex formation / Ribosomal scanning and start codon recognition / preribosome, small subunit precursor / mRNA destabilization / Major pathway of rRNA processing in the nucleolus and cytosol / negative regulation of translational frameshifting / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / positive regulation of protein kinase activity / 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 / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / G-protein alpha-subunit binding / 90S preribosome / Ub-specific processing proteases / regulation of translational fidelity / translational termination / ribosomal subunit export from nucleus / 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) / ribosomal small subunit export from nucleus / translation regulator activity / DNA-(apurinic or apyrimidinic site) endonuclease activity / translation initiation factor activity / rescue of stalled ribosome / protein kinase C binding / cellular response to amino acid starvation / positive regulation of translation / ribosomal large subunit biogenesis / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosome assembly / maturation of SSU-rRNA / small-subunit processome / translational initiation / maintenance of translational fidelity / modification-dependent protein catabolic process / protein tag activity / cytoplasmic stress granule / rRNA processing / ribosome biogenesis / ribosome binding / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / cytoplasmic translation / negative regulation of translation / rRNA binding / protein ubiquitination / structural constituent of ribosome / ribosome / translation / G protein-coupled receptor signaling pathway / iron ion binding / negative regulation of gene expression / mRNA binding / ubiquitin protein ligase binding / nucleolus / ATP hydrolysis activity / mitochondrion / RNA binding / zinc ion binding / nucleoplasm / ATP binding / nucleus / cytoplasm / cytosol Similarity search - Function | |||||||||
| Biological species | ![]() ![]() | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.0 Å | |||||||||
Authors | Mackens-Kiani T / Kratzat H | |||||||||
| Funding support | Germany, France, 2 items
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Citation | Journal: EMBO J / Year: 2021Title: A structural inventory of native ribosomal ABCE1-43S pre-initiation complexes. Authors: Hanna Kratzat / Timur Mackens-Kiani / Michael Ameismeier / Mia Potocnjak / Jingdong Cheng / Estelle Dacheux / Abdelkader Namane / Otto Berninghausen / Franz Herzog / Micheline Fromont-Racine ...Authors: Hanna Kratzat / Timur Mackens-Kiani / Michael Ameismeier / Mia Potocnjak / Jingdong Cheng / Estelle Dacheux / Abdelkader Namane / Otto Berninghausen / Franz Herzog / Micheline Fromont-Racine / Thomas Becker / Roland Beckmann / ![]() Abstract: In eukaryotic translation, termination and ribosome recycling phases are linked to subsequent initiation of a new round of translation by persistence of several factors at ribosomal sub-complexes. ...In eukaryotic translation, termination and ribosome recycling phases are linked to subsequent initiation of a new round of translation by persistence of several factors at ribosomal sub-complexes. These comprise/include the large eIF3 complex, eIF3j (Hcr1 in yeast) and the ATP-binding cassette protein ABCE1 (Rli1 in yeast). The ATPase is mainly active as a recycling factor, but it can remain bound to the dissociated 40S subunit until formation of the next 43S pre-initiation complexes. However, its functional role and native architectural context remains largely enigmatic. Here, we present an architectural inventory of native yeast and human ABCE1-containing pre-initiation complexes by cryo-EM. We found that ABCE1 was mostly associated with early 43S, but also with later 48S phases of initiation. It adopted a novel hybrid conformation of its nucleotide-binding domains, while interacting with the N-terminus of eIF3j. Further, eIF3j occupied the mRNA entry channel via its ultimate C-terminus providing a structural explanation for its antagonistic role with respect to mRNA binding. Overall, the native human samples provide a near-complete molecular picture of the architecture and sophisticated interaction network of the 43S-bound eIF3 complex and the eIF2 ternary complex containing the initiator tRNA. | |||||||||
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Structure visualization
| Movie |
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| Structure viewer | EM map: SurfView Molmil Jmol/JSmol |
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Downloads & links
-EMDB archive
| Map data | emd_11608.map.gz | 277.6 MB | EMDB map data format | |
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| Header (meta data) | emd-11608-v30.xml emd-11608.xml | 64.4 KB 64.4 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_11608_fsc.xml | 15.9 KB | Display | FSC data file |
| Images | emd_11608.png | 164.5 KB | ||
| Filedesc metadata | emd-11608.cif.gz | 12.4 KB | ||
| Others | emd_11608_additional_1.map.gz emd_11608_additional_2.map.gz emd_11608_half_map_1.map.gz emd_11608_half_map_2.map.gz | 326.3 MB 197.3 MB 277.6 MB 277.5 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-11608 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-11608 | HTTPS FTP |
-Validation report
| Summary document | emd_11608_validation.pdf.gz | 1.1 MB | Display | EMDB validaton report |
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| Full document | emd_11608_full_validation.pdf.gz | 1.1 MB | Display | |
| Data in XML | emd_11608_validation.xml.gz | 23.8 KB | Display | |
| Data in CIF | emd_11608_validation.cif.gz | 31.6 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-11608 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-11608 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 7a1gMC ![]() 6zceC ![]() 6zu9C ![]() 6zvjC ![]() 7a09C M: atomic model generated by this map C: citing same article ( |
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| Similar structure data |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_11608.map.gz / Format: CCP4 / Size: 347.6 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: 1.059 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Additional map: post-processed map
| File | emd_11608_additional_1.map | ||||||||||||
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| Annotation | post-processed map | ||||||||||||
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-Additional map: local resolution filtered map
| File | emd_11608_additional_2.map | ||||||||||||
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| Annotation | local resolution filtered map | ||||||||||||
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-Half map: #1
| File | emd_11608_half_map_1.map | ||||||||||||
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-Half map: #2
| File | emd_11608_half_map_2.map | ||||||||||||
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Sample components
+Entire : ABCE1-bound 43S PIC
+Supramolecule #1: ABCE1-bound 43S PIC
+Macromolecule #1: 18S ribosomal RNA
+Macromolecule #2: 40S ribosomal protein S0-A
+Macromolecule #3: 40S ribosomal protein S1-A
+Macromolecule #4: 40S ribosomal protein S2
+Macromolecule #5: 40S ribosomal protein S4-A
+Macromolecule #6: 40S ribosomal protein S6-A
+Macromolecule #7: 40S ribosomal protein S7-A
+Macromolecule #8: 40S ribosomal protein S8-A
+Macromolecule #9: 40S ribosomal protein S9-A
+Macromolecule #10: 40S ribosomal protein S11-A
+Macromolecule #11: 40S ribosomal protein S13
+Macromolecule #12: 40S ribosomal protein S14-B
+Macromolecule #13: 40S ribosomal protein S21-A
+Macromolecule #14: 40S ribosomal protein S22-A
+Macromolecule #15: 40S ribosomal protein S23-A
+Macromolecule #16: 40S ribosomal protein S24-A
+Macromolecule #17: 40S ribosomal protein S26-B
+Macromolecule #18: 40S ribosomal protein S27-A
+Macromolecule #19: 40S ribosomal protein S30-A
+Macromolecule #20: 40S ribosomal protein S15
+Macromolecule #21: 40S ribosomal protein S3
+Macromolecule #22: 40S ribosomal protein S5
+Macromolecule #23: 40S ribosomal protein S10-A
+Macromolecule #24: 40S ribosomal protein S12
+Macromolecule #25: 40S ribosomal protein S16-A
+Macromolecule #26: 40S ribosomal protein S17-B
+Macromolecule #27: 40S ribosomal protein S18-A
+Macromolecule #28: 40S ribosomal protein S19-A
+Macromolecule #29: 40S ribosomal protein S20
+Macromolecule #30: 40S ribosomal protein S25-A
+Macromolecule #31: 40S ribosomal protein S29-A
+Macromolecule #32: Ubiquitin-40S ribosomal protein S31
+Macromolecule #33: Guanine nucleotide-binding protein subunit beta-like protein
+Macromolecule #34: 40S ribosomal protein S28-A
+Macromolecule #35: Eukaryotic translation initiation factor 3 subunit J
+Macromolecule #36: Translation initiation factor RLI1
+Macromolecule #37: MAGNESIUM ION
+Macromolecule #38: ZINC ION
+Macromolecule #39: IRON/SULFUR CLUSTER
+Macromolecule #40: ADENOSINE-5'-DIPHOSPHATE
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Buffer | pH: 7.4 |
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| Vitrification | Cryogen name: ETHANE |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Image recording | Film or detector model: GATAN K2 QUANTUM (4k x 4k) / Average electron dose: 44.8 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Keywords
Authors
Germany,
France, 2 items
Citation
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