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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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![]() | TRANSLATION / translation re-initiation complex / small ribosomal subunit / RNA binding protein / eukaryotic translation initiation factor | ||||||
Function / homology | ![]() IRES-dependent viral translational initiation / formation of translation preinitiation complex / negative regulation of endoplasmic reticulum unfolded protein response / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / negative regulation of peptidyl-serine phosphorylation / positive regulation of respiratory burst involved in inflammatory response / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / positive regulation of gastrulation ...IRES-dependent viral translational initiation / formation of translation preinitiation complex / negative regulation of endoplasmic reticulum unfolded protein response / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / negative regulation of peptidyl-serine phosphorylation / positive regulation of respiratory burst involved in inflammatory response / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / positive regulation of gastrulation / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / protein tyrosine kinase inhibitor activity / IRE1-RACK1-PP2A complex / positive regulation of endodeoxyribonuclease activity / nucleolus organization / positive regulation of Golgi to plasma membrane protein transport / translation at postsynapse / ribosome disassembly / TNFR1-mediated ceramide production / negative regulation of DNA repair / negative regulation of RNA splicing / mammalian oogenesis stage / supercoiled DNA binding / activation-induced cell death of T cells / neural crest cell differentiation / NF-kappaB complex / oxidized purine DNA binding / cysteine-type endopeptidase activator activity involved in apoptotic process / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / ubiquitin-like protein conjugating enzyme binding / regulation of establishment of cell polarity / translation at presynapse / positive regulation of ubiquitin-protein transferase activity / Formation of the ternary complex, and subsequently, the 43S complex / negative regulation of phagocytosis / erythrocyte homeostasis / rRNA modification in the nucleus and cytosol / cytoplasmic side of rough endoplasmic reticulum membrane / laminin receptor activity / protein kinase A binding / negative regulation of ubiquitin protein ligase activity / pigmentation / Ribosomal scanning and start codon recognition / ion channel inhibitor activity / Translation initiation complex formation / positive regulation of mitochondrial depolarization / positive regulation of T cell receptor signaling pathway / positive regulation of activated T cell proliferation / fibroblast growth factor binding / negative regulation of Wnt signaling pathway / monocyte chemotaxis / negative regulation of translational frameshifting / Protein hydroxylation / BH3 domain binding / TOR signaling / SARS-CoV-1 modulates host translation machinery / regulation of cell division / mTORC1-mediated signalling / T cell proliferation involved in immune response / Peptide chain elongation / iron-sulfur cluster binding / 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 / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ubiquitin ligase inhibitor activity / Eukaryotic Translation Termination / Response of EIF2AK4 (GCN2) to amino acid deficiency / SRP-dependent cotranslational protein targeting to membrane / negative regulation of ubiquitin-dependent protein catabolic process / Viral mRNA Translation / negative regulation of respiratory burst involved in inflammatory response / phagocytic cup / 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 / erythrocyte development / Major pathway of rRNA processing in the nucleolus and cytosol / regulation of translational fidelity / 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) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / Protein methylation / spindle assembly / Nuclear events stimulated by ALK signaling in cancer / ribosomal small subunit export from nucleus / positive regulation of intrinsic apoptotic signaling pathway / rough endoplasmic reticulum / laminin binding / translation regulator activity / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / positive regulation of cell cycle / translation initiation factor binding / signaling adaptor activity / gastrulation / MDM2/MDM4 family protein binding / positive regulation of microtubule polymerization / cytosolic ribosome / Mitotic Prometaphase / DNA-(apurinic or apyrimidinic site) endonuclease activity Similarity search - Function | ||||||
Biological species | ![]() ![]() ![]() ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.2 Å | ||||||
![]() | Weisser, M. / Schaefer, T. / Leibundgut, M. / Boehringer, D. / Aylett, C.H.S. / Ban, N. | ||||||
![]() | ![]() Title: 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. | ||||||
History |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 1.9 MB | Display | ![]() |
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PDB format | ![]() | 1.5 MB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | 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.) ![]() ![]() ![]() |
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#36: Protein | Mass: 8453.150 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#37: Protein | Mass: 34857.355 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-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) ![]() |
#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.) ![]() |
+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) ![]() |
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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 | ||||||||||||||||||||||||||||||||||||
Source (natural) |
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Source (recombinant) |
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Buffer solution | pH: 7.6 | ||||||||||||||||||||||||||||||||||||
Buffer component |
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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: ![]() |
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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EM software |
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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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