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 / translation reinitiation / IRES-dependent viral translational initiation ...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 / translation reinitiation / IRES-dependent viral translational initiation / multi-eIF complex / formation of cytoplasmic translation initiation complex / eukaryotic translation initiation factor 3 complex / OAS antiviral response / eukaryotic 43S preinitiation complex / cytoplasmic translational initiation / translation factor activity, RNA binding / mRNA cap binding / positive regulation of cysteine-type endopeptidase activity involved in execution phase of apoptosis / negative regulation of endoplasmic reticulum unfolded protein response / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / eukaryotic 48S preinitiation complex / protein tyrosine kinase inhibitor activity / positive regulation of respiratory burst involved in inflammatory response / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / positive regulation of gastrulation / nucleolus organization / IRE1-RACK1-PP2A complex / positive regulation of endodeoxyribonuclease activity / positive regulation of Golgi to plasma membrane protein transport / TNFR1-mediated ceramide production / ribosome disassembly / negative regulation of DNA repair / negative regulation of RNA splicing / metal-dependent deubiquitinase activity / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / oxidized purine DNA binding / supercoiled 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 / negative regulation of phagocytosis / positive regulation of ubiquitin-protein transferase activity / rRNA modification in the nucleus and cytosol / Formation of the ternary complex, and subsequently, the 43S complex / erythrocyte homeostasis / cytoplasmic side of rough endoplasmic reticulum membrane / laminin receptor activity / nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / 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 / pigmentation / positive regulation of mitochondrial depolarization / mammalian oogenesis stage / activation-induced cell death of T cells / negative regulation of Wnt signaling pathway / positive regulation of T cell receptor signaling pathway / fibroblast growth factor binding / positive regulation of activated T cell proliferation / iron-sulfur cluster binding / regulation of cell division / Protein hydroxylation / monocyte chemotaxis / negative regulation of peptidyl-serine phosphorylation / BH3 domain binding / mTORC1-mediated signalling / SARS-CoV-1 modulates host translation machinery / Peptide chain elongation / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / cysteine-type endopeptidase activator activity involved in apoptotic process / Selenocysteine synthesis / positive regulation of signal transduction by p53 class mediator / Formation of a pool of free 40S subunits / Eukaryotic Translation Termination / phagocytic cup / ubiquitin ligase inhibitor activity / Response of EIF2AK4 (GCN2) to amino acid deficiency / SRP-dependent cotranslational protein targeting to membrane / negative regulation of respiratory burst involved in inflammatory response / ribosomal small subunit binding / negative regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / Viral mRNA Translation / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / GTP hydrolysis and joining of the 60S ribosomal subunit / TOR signaling / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / L13a-mediated translational silencing of Ceruloplasmin expression / endoribonuclease inhibitor activity / T cell proliferation involved in immune response / spindle assembly / Major pathway of rRNA processing in the nucleolus and cytosol / regulation of translational fidelity Similarity search - Function
Eukaryotic translation initiation factor 3 subunit J / Eukaryotic translation initiation factor 3-like domain superfamily / Translation initiation factor eIF3 subunit / Eukaryotic translation initiation factor 3 subunit D / Eukaryotic translation initiation factor 3 subunit 7 (eIF-3) / Eukaryotic translation initiation factor 3 subunit H / eIF3h, C-terminal / C-terminal region of eIF3h / Eukaryotic translation initiation factor SUI1 / Eukaryotic translation initiation factor 3 subunit F ...Eukaryotic translation initiation factor 3 subunit J / Eukaryotic translation initiation factor 3-like domain superfamily / Translation initiation factor eIF3 subunit / Eukaryotic translation initiation factor 3 subunit D / Eukaryotic translation initiation factor 3 subunit 7 (eIF-3) / Eukaryotic translation initiation factor 3 subunit H / eIF3h, C-terminal / C-terminal region of eIF3h / Eukaryotic translation initiation factor SUI1 / Eukaryotic translation initiation factor 3 subunit F / Translation initiation factor 3 complex subunit L / RLI, domain 1 / RNA polymerase I-associated factor PAF67 / Eukaryotic translation initiation factor 3 subunit M / eIF3 subunit M, C-terminal helix domain / eIF3 subunit M, C-terminal helix / Eukaryotic translation initiation factor 3 subunit E, C-terminal / RLI1 / Eukaryotic translation initiation factor 3 subunit E / Eukaryotic translation initiation factor 3 subunit E, N-terminal / eIF3 subunit 6 N terminal domain / eIF3 subunit 6 N terminal domain / RNase L inhibitor RLI-like, possible metal-binding domain / Eukaryotic translation initiation factor 3 subunit K / Translation initiation factor 3, subunit 12, N-terminal, eukaryotic / Eukaryotic translation initiation factor 3 subunit I / Possible Fer4-like domain in RNase L inhibitor, RLI / SUI1 domain superfamily / Translation initiation factor SUI1 / Translation initiation factor SUI1 family profile. / Eukaryotic translation initiation factor 3 subunit B / eIF3B, RNA recognition motif / SUI1 domain / Translation initiation factor, beta propellor-like domain / Eukaryotic translation initiation factor 3 subunit M eIF3m/COP9 signalosome complex subunit 7 COPS7 / Eukaryotic translation initiation factor 3 subunit C, N-terminal domain / Eukaryotic translation initiation factor 3 subunit C / Eukaryotic translation initiation factor 3 subunit 8 N-terminus / Eukaryotic translation initiation factor eIF2A / Eukaryotic translation initiation factor 3 subunit A / 4Fe-4S binding domain / Anaphase-promoting complex subunit 4, WD40 domain / CSN8/PSMD8/EIF3K / CSN8/PSMD8/EIF3K family / Anaphase-promoting complex subunit 4 WD40 domain / Rpn11/EIF3F, C-terminal / Maintenance of mitochondrial structure and function / : / motif in proteasome subunits, Int-6, Nip-1 and TRIP-15 / PCI domain / Proteasome component (PCI) domain / PCI domain profile. / 40S ribosomal protein SA / 40S ribosomal protein SA, C-terminal domain / 40S ribosomal protein SA C-terminus / Ubiquitin-like protein FUBI / JAB1/Mov34/MPN/PAD-1 ubiquitin protease / : / Ribosomal protein S26e signature. / : / Ribosomal protein L41 / Ribosomal protein L41 / Ribosomal protein S26e / Ribosomal protein S26e superfamily / Ribosomal protein S26e / Ribosomal protein S21e, conserved site / Ribosomal protein S21e signature. / Ribosomal protein S12e signature. / Ribosomal protein S12e / Ribosomal protein S5, eukaryotic/archaeal / Ribosomal protein S19e, conserved site / Ribosomal protein S19e signature. / Small (40S) ribosomal subunit Asc1/RACK1 / Ribosomal protein S21e / Ribosomal protein S2, eukaryotic / Ribosomal protein S21e superfamily / Ribosomal protein S21e / S27a-like superfamily / 40S Ribosomal protein S10 / Ribosomal protein S10, eukaryotic/archaeal / Plectin/S10, N-terminal / Plectin/S10 domain / Ribosomal protein S25 / S25 ribosomal protein / Ribosomal protein S27a / Ribosomal protein S2, eukaryotic/archaeal / : / Ribosomal protein S27a / Ribosomal protein S27a / Ribosomal protein S17e, conserved site / Ribosomal protein S17e signature. / Ribosomal protein S8e subdomain, eukaryotes / Ribosomal protein S30 / Ribosomal protein S30 / 40S ribosomal protein S29/30S ribosomal protein S14 type Z / Ribosomal protein S7e signature. / Ribosomal protein S3, eukaryotic/archaeal / : / Ribosomal protein S19e / Ribosomal protein S3Ae, conserved site Similarity search - Domain/homology
40S ribosomal protein S14 / Eukaryotic translation initiation factor 3 subunit C / 40S ribosomal protein S24 / Eukaryotic translation initiation factor 3 subunit F / Eukaryotic translation initiation factor 3 subunit D / Eukaryotic translation initiation factor 3 subunit H / Eukaryotic translation initiation factor 3 subunit J / Small ribosomal subunit protein eS17 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS5 ...40S ribosomal protein S14 / Eukaryotic translation initiation factor 3 subunit C / 40S ribosomal protein S24 / Eukaryotic translation initiation factor 3 subunit F / Eukaryotic translation initiation factor 3 subunit D / Eukaryotic translation initiation factor 3 subunit H / Eukaryotic translation initiation factor 3 subunit J / Small ribosomal subunit protein eS17 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS5 / Small ribosomal subunit protein uS3 / Small ribosomal subunit protein eS12 / Small ribosomal subunit protein eS19 / Eukaryotic translation initiation factor 1 / Small ribosomal subunit protein eS27 / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS7 / Small ribosomal subunit protein eS10 / Eukaryotic translation initiation factor 3 subunit B / Eukaryotic translation initiation factor 3 subunit E / Small ribosomal subunit protein uS10 / ATP-binding cassette sub-family E member 1 / Small ribosomal subunit protein eS1 / Small ribosomal subunit protein eS7 / Small ribosomal subunit protein eS8 / Small ribosomal subunit protein uS8 / Small ribosomal subunit protein uS9 / Small ribosomal subunit protein uS12 / Small ribosomal subunit protein uS13 / Small ribosomal subunit protein uS14 / Small ribosomal subunit protein uS15 / Small ribosomal subunit protein uS17 / Small ribosomal subunit protein eS4, X isoform / Small ribosomal subunit protein eS6 / Small ribosomal subunit protein uS19 / Small ribosomal subunit protein eS25 / Small ribosomal subunit protein eS26 / Small ribosomal subunit protein eS28 / Ubiquitin-like FUBI-ribosomal protein eS30 fusion protein / Small ribosomal subunit protein eS32 / Ubiquitin-ribosomal protein eS31 fusion protein / Small ribosomal subunit protein eS21 / Small ribosomal subunit protein RACK1 / Eukaryotic translation initiation factor 3 subunit I / Eukaryotic translation initiation factor 3 subunit A / Eukaryotic translation initiation factor 3 subunit M / Eukaryotic translation initiation factor 3 subunit K / Eukaryotic translation initiation factor 3 subunit L Similarity search - Component
Biological species
Homo sapiens (human)
Method
single particle reconstruction / cryo EM / Resolution: 3.8 Å
Centre National de la Recherche Scientifique (CNRS)
France
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
Deposition
Jul 24, 2020
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Header (metadata) release
Oct 7, 2020
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Map release
Oct 7, 2020
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Update
May 1, 2024
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Current status
May 1, 2024
Processing site: PDBe / Status: Released
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Structure visualization
Movie
Surface view with section colored by density value
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