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Open data
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Basic information
Entry | Database: PDB / ID: 7zjw | |||||||||
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Title | Rabbit 80S ribosome as it decodes the Sec-UGA codon | |||||||||
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![]() | RIBOSOME / Selenocysteine / recoding / 80S | |||||||||
Function / homology | ![]() forebrain neuron development / Translation initiation complex formation / Formation of the ternary complex, and subsequently, the 43S complex / Ribosomal scanning and start codon recognition / negative regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / Major pathway of rRNA processing in the nucleolus and cytosol / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression / SRP-dependent cotranslational protein targeting to membrane / Formation of a pool of free 40S subunits ...forebrain neuron development / Translation initiation complex formation / Formation of the ternary complex, and subsequently, the 43S complex / Ribosomal scanning and start codon recognition / negative regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / Major pathway of rRNA processing in the nucleolus and cytosol / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression / SRP-dependent cotranslational protein targeting to membrane / Formation of a pool of free 40S subunits / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / selenocysteine incorporation / selenocysteine insertion sequence binding / striatum development / ribosomal subunit / negative regulation of RNA splicing / Formation of the ternary complex, and subsequently, the 43S complex / rRNA modification in the nucleus and cytosol / laminin receptor activity / exit from mitosis / Ribosomal scanning and start codon recognition / optic nerve development / Translation initiation complex formation / mammalian oogenesis stage / retinal ganglion cell axon guidance / activation-induced cell death of T cells / Protein hydroxylation / mTORC1-mediated signalling / SARS-CoV-1 modulates host translation machinery / Peptide chain elongation / organelle membrane / 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 / Response of EIF2AK4 (GCN2) to amino acid deficiency / SRP-dependent cotranslational protein targeting to membrane / Viral mRNA Translation / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / GTP hydrolysis and joining of the 60S ribosomal subunit / 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 / TOR signaling / T cell proliferation involved in immune response / Major pathway of rRNA processing in the nucleolus and cytosol / protein-RNA complex assembly / ribosomal small subunit export from nucleus / erythrocyte development / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / translation regulator activity / translation elongation factor activity / Nuclear events stimulated by ALK signaling in cancer / ribonucleoprotein complex binding / cytosolic ribosome / laminin binding / rough endoplasmic reticulum / 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) / gastrulation / MDM2/MDM4 family protein binding / class I DNA-(apurinic or apyrimidinic site) endonuclease activity / DNA-(apurinic or apyrimidinic site) lyase / rescue of stalled ribosome / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / 90S preribosome / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of LSU-rRNA / ribosomal large subunit biogenesis / cellular response to leukemia inhibitory factor / maturation of SSU-rRNA / mRNA 3'-UTR binding / small-subunit processome / positive regulation of apoptotic signaling pathway / protein kinase C binding / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / positive regulation of protein-containing complex assembly / placenta development / Regulation of expression of SLITs and ROBOs / cytoplasmic ribonucleoprotein granule / modification-dependent protein catabolic process / spindle / G1/S transition of mitotic cell cycle / rRNA processing / protein tag activity / antimicrobial humoral immune response mediated by antimicrobial peptide / positive regulation of canonical Wnt signaling pathway / ribosome biogenesis / ribosome binding / glucose homeostasis / retina development in camera-type eye / virus receptor activity / regulation of translation / ribosomal small subunit biogenesis / heparin binding / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / cell body / T cell differentiation in thymus Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() ![]() ![]() ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.8 Å | |||||||||
![]() | Hilal, T. / Simonovic, M. / Spahn, C.M.T. | |||||||||
Funding support | ![]() ![]()
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![]() | ![]() Title: Structure of the mammalian ribosome as it decodes the selenocysteine UGA codon. Authors: Tarek Hilal / Benjamin Y Killam / Milica Grozdanović / Malgorzata Dobosz-Bartoszek / Justus Loerke / Jörg Bürger / Thorsten Mielke / Paul R Copeland / Miljan Simonović / Christian M T Spahn / ![]() ![]() Abstract: The elongation of eukaryotic selenoproteins relies on a poorly understood process of interpreting in-frame UGA stop codons as selenocysteine (Sec). We used cryo-electron microscopy to visualize Sec ...The elongation of eukaryotic selenoproteins relies on a poorly understood process of interpreting in-frame UGA stop codons as selenocysteine (Sec). We used cryo-electron microscopy to visualize Sec UGA recoding in mammals. A complex between the noncoding Sec-insertion sequence (SECIS), SECIS-binding protein 2 (SBP2), and 40 ribosomal subunit enables Sec-specific elongation factor eEFSec to deliver Sec. eEFSec and SBP2 do not interact directly but rather deploy their carboxyl-terminal domains to engage with the opposite ends of the SECIS. By using its Lys-rich and carboxyl-terminal segments, the ribosomal protein eS31 simultaneously interacts with Sec-specific transfer RNA (tRNA) and SBP2, which further stabilizes the assembly. eEFSec is indiscriminate toward l-serine and facilitates its misincorporation at Sec UGA codons. Our results support a fundamentally distinct mechanism of Sec UGA recoding in eukaryotes from that in bacteria. | |||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 5.1 MB | Display | ![]() |
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PDB format | ![]() | Display | ![]() | |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.1 MB | Display | ![]() |
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Full document | ![]() | 1.3 MB | Display | |
Data in XML | ![]() | 335.4 KB | Display | |
Data in CIF | ![]() | 610.8 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 14751MC ![]() 7zjxC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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1 |
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Components
-Protein , 4 types, 4 molecules EBLGSG
#1: Protein | Mass: 67564.945 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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#5: Protein | Mass: 95640.016 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
#12: Protein | Mass: 34523.863 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#58: Protein | Mass: 35115.652 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-RNA chain , 7 types, 7 molecules FISL5L7L8S2
#2: RNA chain | Mass: 28908.084 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() |
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#3: RNA chain | Mass: 345547.031 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() |
#4: RNA chain | Mass: 275721.688 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() ![]() |
#6: RNA chain | Mass: 1557505.375 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#7: RNA chain | Mass: 38346.707 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#8: RNA chain | Mass: 50809.047 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#52: RNA chain | Mass: 603814.125 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
+60S ribosomal Protein ... , 43 types, 43 molecules LDLELFLHLILJLKLLLMLOLPLQLRLSLTLULVLWLXLYLZLaLbLcLdLeLfLgLhLi...
+40S ribosomal protein ... , 30 types, 30 molecules SBSCSDSESHSLSMSNSOSPSRSSSTSUSVSWSXSYSZSaSbScSdSeSfSgShSiSjSk
-Ribosomal protein ... , 2 types, 2 molecules SFSQ
#57: Protein | Mass: 13047.532 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#65: Protein | Mass: 22913.453 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-Non-polymers , 7 types, 363 molecules ![](data/chem/img/GTP.gif)
![](data/chem/img/SER.gif)
![](data/chem/img/MG.gif)
![](data/chem/img/K.gif)
![](data/chem/img/ZN.gif)
![](data/chem/img/NA.gif)
![](data/chem/img/HOH.gif)
![](data/chem/img/SER.gif)
![](data/chem/img/MG.gif)
![](data/chem/img/K.gif)
![](data/chem/img/ZN.gif)
![](data/chem/img/NA.gif)
![](data/chem/img/HOH.gif)
#87: Chemical | #88: Chemical | ChemComp-SER / | #89: Chemical | ChemComp-MG / #90: Chemical | ChemComp-K / #91: Chemical | ChemComp-ZN / #92: Chemical | ChemComp-NA / | #93: Water | ChemComp-HOH / | |
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-Details
Has ligand of interest | Y |
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-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: 3.5 MDa / Experimental value: NO | ||||||||||||||||||||||||||||||||||||||||||
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Source (recombinant) |
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Buffer solution | pH: 7.6 | ||||||||||||||||||||||||||||||||||||||||||
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||||||||||||||||||||
Specimen support | Grid material: COPPER/RHODIUM / Grid type: Quantifoil R3/3 | ||||||||||||||||||||||||||||||||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK II / Cryogen name: ETHANE / Humidity: 100 % |
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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 / Nominal defocus max: 2000 nm / Nominal defocus min: 800 nm / Alignment procedure: ZEMLIN TABLEAU |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Electron dose: 30 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 13921 |
EM imaging optics | Energyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV |
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Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 1685923 | ||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 77142 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: RIGID BODY FIT / Space: REAL | ||||||||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 7O7Y Accession code: 7O7Y / Source name: PDB / Type: experimental model |