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Open data
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Basic information
| Entry | Database: PDB / ID: 5oa3 | ||||||
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| Title | Human 40S-eIF2D-re-initiation complex | ||||||
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Keywords | TRANSLATION / translation re-initiation complex / small ribosomal subunit / RNA binding protein / eukaryotic translation initiation factor | ||||||
| Function / homology | Function and homology informationIRES-dependent viral translational initiation / formation of translation preinitiation complex / oxidized pyrimidine DNA binding / response to TNF agonist / negative regulation of endoplasmic reticulum unfolded protein response / positive regulation of base-excision repair / positive regulation of respiratory burst involved in inflammatory response / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / ribosome disassembly / positive regulation of gastrulation ...IRES-dependent viral translational initiation / formation of translation preinitiation complex / oxidized pyrimidine DNA binding / response to TNF agonist / negative regulation of endoplasmic reticulum unfolded protein response / positive regulation of base-excision repair / positive regulation of respiratory burst involved in inflammatory response / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / ribosome disassembly / positive regulation of gastrulation / protein tyrosine kinase inhibitor activity / positive regulation of endodeoxyribonuclease activity / nucleolus organization / IRE1-RACK1-PP2A complex / positive regulation of Golgi to plasma membrane protein transport / TNFR1-mediated ceramide production / negative regulation of DNA repair / negative regulation of RNA splicing / supercoiled DNA binding / NF-kappaB complex / neural crest cell differentiation / oxidized purine DNA binding / cysteine-type endopeptidase activator activity involved in apoptotic process / positive regulation of ubiquitin-protein transferase activity / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / negative regulation of bicellular tight junction assembly / regulation of establishment of cell polarity / ubiquitin-like protein conjugating enzyme binding / rRNA modification in the nucleus and cytosol / negative regulation of phagocytosis / erythrocyte homeostasis / Formation of the ternary complex, and subsequently, the 43S complex / cytoplasmic side of rough endoplasmic reticulum membrane / negative regulation of ubiquitin protein ligase activity / laminin receptor activity / protein kinase A binding / ion channel inhibitor activity / Ribosomal scanning and start codon recognition / pigmentation / Translation initiation complex formation / positive regulation of mitochondrial depolarization / positive regulation of T cell receptor signaling pathway / fibroblast growth factor binding / negative regulation of Wnt signaling pathway / monocyte chemotaxis / TOR signaling / negative regulation of translational frameshifting / BH3 domain binding / positive regulation of activated T cell proliferation / Protein hydroxylation / SARS-CoV-1 modulates host translation machinery / iron-sulfur cluster binding / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / cellular response to ethanol / regulation of cell division / mTORC1-mediated signalling / Peptide chain elongation / Selenocysteine synthesis / Formation of a pool of free 40S subunits / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Eukaryotic Translation Termination / positive regulation of GTPase activity / negative regulation of ubiquitin-dependent protein catabolic process / SRP-dependent cotranslational protein targeting to membrane / Response of EIF2AK4 (GCN2) to amino acid deficiency / protein serine/threonine kinase inhibitor activity / ubiquitin ligase inhibitor activity / Viral mRNA Translation / positive regulation of signal transduction by p53 class mediator / negative regulation of respiratory burst involved in inflammatory response / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression / Major pathway of rRNA processing in the nucleolus and cytosol / phagocytic cup / regulation of translational fidelity / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / negative regulation of protein binding / Protein methylation / Nuclear events stimulated by ALK signaling in cancer / positive regulation of intrinsic apoptotic signaling pathway / spindle assembly / laminin binding / positive regulation of cell cycle / 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) / rough endoplasmic reticulum / translation regulator activity / ribosomal small subunit export from nucleus / gastrulation / translation initiation factor binding / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / DNA-(apurinic or apyrimidinic site) endonuclease activity / translation initiation factor activity / positive regulation of microtubule polymerization / signaling adaptor activity / MDM2/MDM4 family protein binding / negative regulation of protein ubiquitination / Hsp70 protein binding / antiviral innate immune response Similarity search - Function | ||||||
| Biological species | Homo sapiens (human)![]() Hepatitis C virus | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.2 Å | ||||||
Authors | Weisser, M. / Schaefer, T. / Leibundgut, M. / Boehringer, D. / Aylett, C.H.S. / Ban, N. | ||||||
Citation | Journal: Mol Cell / Year: 2017Title: Structural and Functional Insights into Human Re-initiation Complexes. Authors: Melanie Weisser / Tanja Schäfer / Marc Leibundgut / Daniel Böhringer / Christopher Herbert Stanley Aylett / Nenad Ban / ![]() Abstract: After having translated short upstream open reading frames, ribosomes can re-initiate translation on the same mRNA. This process, referred to as re-initiation, controls the translation of a large ...After having translated short upstream open reading frames, ribosomes can re-initiate translation on the same mRNA. This process, referred to as re-initiation, controls the translation of a large fraction of mammalian cellular mRNAs, many of which are important in cancer. Key ribosomal binding proteins involved in re-initiation are the eukaryotic translation initiation factor 2D (eIF2D) or the homologous complex of MCT-1/DENR. We determined the structures of these factors bound to the human 40S ribosomal subunit in complex with initiator tRNA positioned on an mRNA start codon in the P-site using a combination of cryoelectron microscopy and X-ray crystallography. The structures, supported by biochemical experiments, reveal how eIF2D emulates the function of several canonical translation initiation factors by using three independent, flexibly connected RNA binding domains to simultaneously monitor codon-anticodon interactions in the ribosomal P-site and position the initiator tRNA. | ||||||
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Structure visualization
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| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 5oa3.cif.gz | 1.9 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb5oa3.ent.gz | 1.5 MB | Display | PDB format |
| PDBx/mmJSON format | 5oa3.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/oa/5oa3 ftp://data.pdbj.org/pub/pdb/validation_reports/oa/5oa3 | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 3770MC ![]() 5oa9C M: map data used to model this data C: citing same article ( |
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| Similar structure data |
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Links
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Assembly
| Deposited unit | ![]()
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Components
-Protein , 3 types, 3 molecules 0fg
| #1: Protein | Mass: 64788.301 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: EIF2D, HCA56, LGTN / Production host: ![]() |
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| #36: Protein | Mass: 8453.150 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q5RKT7 |
| #37: Protein | Mass: 34857.355 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P63244 |
-RNA chain , 3 types, 3 molecules 123
| #2: RNA chain | Mass: 24238.500 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #3: RNA chain | Mass: 602472.688 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: GenBank: 337376 |
| #4: RNA chain | Mass: 88648.414 Da / Num. of mol.: 1 Fragment: (delta domain II mutant, in which domain II of the IRES is replaced with a small stem loop Source method: obtained synthetically Details: HCV IRES mRNA (delta domain II mutant, in which domain II of the IRES is replaced with a small stem loop) Source: (synth.) Hepatitis C virus / References: GenBank: 555439351 |
+40S ribosomal protein ... , 31 types, 31 molecules ABCDEFGHIJKLMNOPQRSTUVWXYZabcde
-Protein/peptide / Non-polymers , 2 types, 4 molecules h

| #38: Protein/peptide | Mass: 3342.255 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62945*PLUS |
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| #39: Chemical |
-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
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| Molecular weight | Value: 1.4 MDa / Experimental value: NO | ||||||||||||||||||||||||||||||||||||
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| Buffer solution | pH: 7.6 | ||||||||||||||||||||||||||||||||||||
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| Specimen | Conc.: 0.11 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||||||||||||||
| Specimen support | Grid type: Quantifoil R2/2 | ||||||||||||||||||||||||||||||||||||
| Vitrification | Cryogen name: ETHANE-PROPANE |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: FEI TITAN KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD |
| Image recording | Electron dose: 40 e/Å2 / Film or detector model: FEI FALCON II (4k x 4k) |
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Processing
| Software | Name: PHENIX / Version: 1.9_1692 / Classification: refinement | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 4.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 62177 / Symmetry type: POINT | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Refinement | Resolution: 4.2→4.2 Å / SU ML: 0.74 / σ(F): 1.18 / Phase error: 33.96 / Stereochemistry target values: MLHL
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| Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Refine LS restraints |
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| LS refinement shell |
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Homo sapiens (human)
Hepatitis C virus
Citation
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