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Yorodumi- EMDB-11458: Structure of a human ABCE1-bound 43S pre-initiation complex - State II -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-11458 | |||||||||
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Title | Structure of a human ABCE1-bound 43S pre-initiation complex - State II | |||||||||
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Keywords | Translation / Initiation / Ribosome Recycling / ABC Proteins / RIBOSOME | |||||||||
Function / homology | Function and homology information negative regulation of endoribonuclease activity / CTPase activity / positive regulation of mRNA binding / positive regulation of mRNA cis splicing, via spliceosome / viral translational termination-reinitiation / eukaryotic translation initiation factor 3 complex, eIF3e / cap-dependent translational initiation / eukaryotic translation initiation factor 3 complex, eIF3m / IRES-dependent viral translational initiation / translation reinitiation ...negative regulation of endoribonuclease activity / CTPase activity / positive regulation of mRNA binding / positive regulation of mRNA cis splicing, via spliceosome / viral translational termination-reinitiation / eukaryotic translation initiation factor 3 complex, eIF3e / cap-dependent translational initiation / eukaryotic translation initiation factor 3 complex, eIF3m / IRES-dependent viral translational initiation / translation reinitiation / OAS antiviral response / eukaryotic translation initiation factor 3 complex / formation of cytoplasmic translation initiation complex / multi-eIF complex / cytoplasmic translational initiation / translation factor activity, RNA binding / mRNA cap binding / eukaryotic 43S preinitiation complex / ribosome disassembly / : / ribosomal subunit / negative regulation of endoplasmic reticulum unfolded protein response / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / protein tyrosine kinase inhibitor activity / positive regulation of respiratory burst involved in inflammatory response / eukaryotic 48S preinitiation complex / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / positive regulation of gastrulation / nucleolus organization / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / IRE1-RACK1-PP2A complex / positive regulation of endodeoxyribonuclease activity / positive regulation of Golgi to plasma membrane protein transport / TNFR1-mediated ceramide production / negative regulation of RNA splicing / negative regulation of DNA repair / metal-dependent deubiquitinase activity / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / supercoiled DNA binding / oxidized purine DNA binding / neural crest cell differentiation / NF-kappaB complex / ubiquitin-like protein conjugating enzyme binding / regulation of translational initiation / regulation of establishment of cell polarity / positive regulation of ubiquitin-protein transferase activity / negative regulation of phagocytosis / rRNA modification in the nucleus and cytosol / erythrocyte homeostasis / Formation of the ternary complex, and subsequently, the 43S complex / cytoplasmic side of rough endoplasmic reticulum membrane / nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / laminin receptor activity / pigmentation / protein kinase A binding / negative regulation of ubiquitin protein ligase activity / Ribosomal scanning and start codon recognition / ion channel inhibitor activity / Translation initiation complex formation / mammalian oogenesis stage / fibroblast growth factor binding / positive regulation of mitochondrial depolarization / activation-induced cell death of T cells / positive regulation of T cell receptor signaling pathway / negative regulation of peptidyl-serine phosphorylation / iron-sulfur cluster binding / negative regulation of Wnt signaling pathway / positive regulation of activated T cell proliferation / monocyte chemotaxis / Protein hydroxylation / regulation of cell division / BH3 domain binding / cysteine-type endopeptidase activator activity involved in apoptotic process / mTORC1-mediated signalling / SARS-CoV-1 modulates host translation machinery / Peptide chain elongation / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / Selenocysteine synthesis / positive regulation of signal transduction by p53 class mediator / Formation of a pool of free 40S subunits / ubiquitin ligase inhibitor activity / Eukaryotic Translation Termination / phagocytic cup / ribosomal small subunit binding / negative regulation of respiratory burst involved in inflammatory response / Response of EIF2AK4 (GCN2) to amino acid deficiency / SRP-dependent cotranslational protein targeting to membrane / Viral mRNA Translation / negative regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / GTP hydrolysis and joining of the 60S ribosomal subunit / endoribonuclease inhibitor activity / L13a-mediated translational silencing of Ceruloplasmin expression / TOR signaling / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / T cell proliferation involved in immune response / regulation of translational fidelity / spindle assembly Similarity search - Function | |||||||||
Biological species | Homo sapiens (human) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.8 Å | |||||||||
Authors | Kratzat H / Mackens-Kiani T | |||||||||
Funding support | Germany, France, 2 items
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Citation | Journal: EMBO J / Year: 2021 Title: 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. | |||||||||
History |
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-Structure visualization
Movie |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_11458.map.gz | 194 MB | EMDB map data format | |
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Header (meta data) | emd-11458-v30.xml emd-11458.xml | 78.7 KB 78.7 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_11458_fsc.xml | 14.2 KB | Display | FSC data file |
Images | emd_11458.png | 193.8 KB | ||
Filedesc metadata | emd-11458.cif.gz | 15.4 KB | ||
Others | emd_11458_additional_1.map.gz emd_11458_additional_2.map.gz emd_11458_additional_3.map.gz emd_11458_additional_4.map.gz emd_11458_additional_5.map.gz emd_11458_additional_6.map.gz emd_11458_additional_7.map.gz | 25.7 MB 140 MB 19.5 MB 15.2 MB 14.4 MB 3.3 MB 3 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-11458 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-11458 | HTTPS FTP |
-Validation report
Summary document | emd_11458_validation.pdf.gz | 752.8 KB | Display | EMDB validaton report |
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Full document | emd_11458_full_validation.pdf.gz | 752.4 KB | Display | |
Data in XML | emd_11458_validation.xml.gz | 14.1 KB | Display | |
Data in CIF | emd_11458_validation.cif.gz | 19.1 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-11458 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-11458 | HTTPS FTP |
-Related structure data
Related structure data | 6zvjMC 6zceC 6zu9C 7a09C 7a1gC 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_11458.map.gz / Format: CCP4 / Size: 244.1 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: 1.059 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 and masked map
File | emd_11458_additional_1.map | ||||||||||||
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Annotation | post processed and masked map | ||||||||||||
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-Additional map: local resolution filtered map
File | emd_11458_additional_2.map | ||||||||||||
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Annotation | local resolution filtered map | ||||||||||||
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-Additional map: multi body refinement body 1
File | emd_11458_additional_3.map | ||||||||||||
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Annotation | multi body refinement body 1 | ||||||||||||
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-Additional map: multi body refinement body 2
File | emd_11458_additional_4.map | ||||||||||||
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Annotation | multi body refinement body 2 | ||||||||||||
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-Additional map: multi body refinement body 3
File | emd_11458_additional_5.map | ||||||||||||
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Annotation | multi body refinement body 3 | ||||||||||||
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-Additional map: multi body refinement if eIF3 core body 1
File | emd_11458_additional_6.map | ||||||||||||
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Annotation | multi body refinement if eIF3 core body 1 | ||||||||||||
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Density Histograms |
-Additional map: multi body refinement if eIF3 core body 2
File | emd_11458_additional_7.map | ||||||||||||
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Annotation | multi body refinement if eIF3 core body 2 | ||||||||||||
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-Sample components
+Entire : ABCE1-bound 43S initiation complex
+Supramolecule #1: ABCE1-bound 43S initiation complex
+Macromolecule #1: 40S ribosomal protein SA
+Macromolecule #2: 40S ribosomal protein S3a
+Macromolecule #3: 40S ribosomal protein S2
+Macromolecule #4: 40S ribosomal protein S26
+Macromolecule #5: 40S ribosomal protein S4, X isoform
+Macromolecule #6: 60S ribosomal protein L41
+Macromolecule #7: 40S ribosomal protein S6
+Macromolecule #8: 40S ribosomal protein S7
+Macromolecule #9: 40S ribosomal protein S8
+Macromolecule #10: 40S ribosomal protein S9
+Macromolecule #11: 40S ribosomal protein S11
+Macromolecule #12: 40S ribosomal protein S13
+Macromolecule #13: 40S ribosomal protein S14
+Macromolecule #14: 40S ribosomal protein S21
+Macromolecule #15: 40S ribosomal protein S15a
+Macromolecule #16: 40S ribosomal protein S23
+Macromolecule #17: 40S ribosomal protein S24
+Macromolecule #18: 40S ribosomal protein S27
+Macromolecule #19: 40S ribosomal protein S30
+Macromolecule #21: 40S ribosomal protein S17
+Macromolecule #22: 40S ribosomal protein S16
+Macromolecule #23: 40S ribosomal protein S3
+Macromolecule #24: 40S ribosomal protein S5
+Macromolecule #25: 40S ribosomal protein S10
+Macromolecule #26: 40S ribosomal protein S12
+Macromolecule #27: 40S ribosomal protein S15
+Macromolecule #28: 40S ribosomal protein S18
+Macromolecule #29: 40S ribosomal protein S19
+Macromolecule #30: 40S ribosomal protein S20
+Macromolecule #31: 40S ribosomal protein S25
+Macromolecule #32: 40S ribosomal protein S28
+Macromolecule #33: 40S ribosomal protein S29
+Macromolecule #34: Ubiquitin-40S ribosomal protein S27a
+Macromolecule #35: Receptor of activated protein C kinase 1
+Macromolecule #36: Eukaryotic translation initiation factor 3 subunit I
+Macromolecule #37: Eukaryotic translation initiation factor 3 subunit B
+Macromolecule #38: Eukaryotic translation initiation factor 3 subunit A
+Macromolecule #39: Eukaryotic translation initiation factor 3 subunit C
+Macromolecule #40: Eukaryotic translation initiation factor 3 subunit E
+Macromolecule #41: Eukaryotic translation initiation factor 3 subunit F
+Macromolecule #42: Eukaryotic translation initiation factor 3 subunit H
+Macromolecule #43: Eukaryotic translation initiation factor 3 subunit K
+Macromolecule #44: Eukaryotic translation initiation factor 3 subunit L
+Macromolecule #45: Eukaryotic translation initiation factor 3 subunit M
+Macromolecule #46: ATP-binding cassette sub-family E member 1
+Macromolecule #47: Eukaryotic translation initiation factor 1
+Macromolecule #48: Eukaryotic translation initiation factor 3 subunit D
+Macromolecule #49: RNA recognition motif (unknown)
+Macromolecule #50: Eukaryotic translation initiation factor 3 subunit J
+Macromolecule #20: 18S ribosomal RNA
+Macromolecule #51: ZINC ION
+Macromolecule #52: IRON/SULFUR CLUSTER
+Macromolecule #53: ADENOSINE-5'-DIPHOSPHATE
+Macromolecule #54: MAGNESIUM ION
+Macromolecule #55: ADENOSINE-5'-TRIPHOSPHATE
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.6 |
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Vitrification | Cryogen name: ETHANE |
-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: 48.0 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 |