+Open data
-Basic information
Entry | Database: PDB / ID: 6mte | |||||||||
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Title | Rabbit 80S ribosome with eEF2 and SERBP1 (rotated state) | |||||||||
Components |
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Keywords | RIBOSOME / translation | |||||||||
Function / homology | Function and homology information Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / L13a-mediated translational silencing of Ceruloplasmin expression / Major pathway of rRNA processing in the nucleolus and cytosol / Translation initiation complex formation / Formation of a pool of free 40S subunits / Formation of the ternary complex, and subsequently, the 43S complex / Ribosomal scanning and start codon recognition / GTP hydrolysis and joining of the 60S ribosomal subunit / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) ...Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / L13a-mediated translational silencing of Ceruloplasmin expression / Major pathway of rRNA processing in the nucleolus and cytosol / Translation initiation complex formation / Formation of a pool of free 40S subunits / Formation of the ternary complex, and subsequently, the 43S complex / Ribosomal scanning and start codon recognition / GTP hydrolysis and joining of the 60S ribosomal subunit / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / : / Translation initiation complex formation / Formation of the ternary complex, and subsequently, the 43S complex / Ribosomal scanning and start codon recognition / L13a-mediated translational silencing of Ceruloplasmin expression / SRP-dependent cotranslational protein targeting to membrane / Formation of a pool of free 40S subunits / GTP hydrolysis and joining of the 60S ribosomal subunit / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / Major pathway of rRNA processing in the nucleolus and cytosol / SRP-dependent cotranslational protein targeting to membrane / L13a-mediated translational silencing of Ceruloplasmin expression / SRP-dependent cotranslational protein targeting to membrane / Major pathway of rRNA processing in the nucleolus and cytosol / Formation of a pool of free 40S subunits / GTP hydrolysis and joining of the 60S ribosomal subunit / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / Translation initiation complex formation / Formation of the ternary complex, and subsequently, the 43S complex / Ribosomal scanning and start codon recognition / Resolution of Sister Chromatid Cohesion / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / RHO GTPases Activate Formins / 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) / Separation of Sister Chromatids / positive regulation of cysteine-type endopeptidase activity involved in execution phase of apoptosis / positive regulation of endodeoxyribonuclease activity / TORC2 complex binding / ribosomal subunit / Formation of the ternary complex, and subsequently, the 43S complex / erythrocyte homeostasis / cytoplasmic side of rough endoplasmic reticulum membrane / regulation of G1 to G0 transition / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / protein tyrosine kinase inhibitor activity / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / regulation of translation involved in cellular response to UV / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / protein-DNA complex disassembly / positive regulation of DNA damage response, signal transduction by p53 class mediator resulting in transcription of p21 class mediator / Ribosomal scanning and start codon recognition / IRE1-RACK1-PP2A complex / positive regulation of Golgi to plasma membrane protein transport / negative regulation of DNA repair / Translation initiation complex formation / oxidized purine DNA binding / G1 to G0 transition / supercoiled DNA binding / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / NF-kappaB complex / negative regulation of phagocytosis / ubiquitin-like protein conjugating enzyme binding / SARS-CoV-1 modulates host translation machinery / protein kinase A binding / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Peptide chain elongation / Selenocysteine synthesis / protein-RNA complex assembly / 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 / organelle membrane / positive regulation of mitochondrial depolarization / Response of EIF2AK4 (GCN2) to amino acid deficiency / SRP-dependent cotranslational protein targeting to membrane / positive regulation of T cell receptor signaling pathway / Viral mRNA Translation / positive regulation of activated T cell proliferation / 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 / BH3 domain binding / 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) / cysteine-type endopeptidase activator activity involved in apoptotic process / ribosomal small subunit export from nucleus / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) Similarity search - Function | |||||||||
Biological species | Oryctolagus cuniculus (rabbit) | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å | |||||||||
Authors | Brown, A. / Baird, M.R. / Yip, M.C.J. / Murray, J. / Shao, S. | |||||||||
Citation | Journal: Elife / Year: 2018 Title: Structures of translationally inactive mammalian ribosomes. Authors: Alan Brown / Matthew R Baird / Matthew Cj Yip / Jason Murray / Sichen Shao / Abstract: The cellular levels and activities of ribosomes directly regulate gene expression during numerous physiological processes. The mechanisms that globally repress translation are incompletely understood. ...The cellular levels and activities of ribosomes directly regulate gene expression during numerous physiological processes. The mechanisms that globally repress translation are incompletely understood. Here, we use electron cryomicroscopy to analyze inactive ribosomes isolated from mammalian reticulocytes, the penultimate stage of red blood cell differentiation. We identify two types of ribosomes that are translationally repressed by protein interactions. The first comprises ribosomes sequestered with elongation factor 2 (eEF2) by SERPINE mRNA binding protein 1 (SERBP1) occupying the ribosomal mRNA entrance channel. The second type are translationally repressed by a novel ribosome-binding protein, interferon-related developmental regulator 2 (IFRD2), which spans the P and E sites and inserts a C-terminal helix into the mRNA exit channel to preclude translation. IFRD2 binds ribosomes with a tRNA occupying a noncanonical binding site, the 'Z site', on the ribosome. These structures provide functional insights into how ribosomal interactions may suppress translation to regulate gene expression. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 6mte.cif.gz | 4.8 MB | Display | PDBx/mmCIF format |
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PDB format | pdb6mte.ent.gz | Display | PDB format | |
PDBx/mmJSON format | 6mte.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/mt/6mte ftp://data.pdbj.org/pub/pdb/validation_reports/mt/6mte | HTTPS FTP |
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-Related structure data
Related structure data | 9242MC 9234C 9235C 9236C 9237C 9239C 9240C 9241C 6mtbC 6mtcC 6mtdC C: citing same article (ref.) M: map data used to model this data |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
-RNA chain , 4 types, 4 molecules 5789
#1: RNA chain | Mass: 1167366.125 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Oryctolagus cuniculus (rabbit) |
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#2: RNA chain | Mass: 38691.914 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Oryctolagus cuniculus (rabbit) / References: GenBank: 39 |
#3: RNA chain | Mass: 48559.699 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Oryctolagus cuniculus (rabbit) |
#50: RNA chain | Mass: 548638.062 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Oryctolagus cuniculus (rabbit) |
+Protein , 77 types, 77 molecules ABCDEFGHIJLMNOPQRSTUVWXYZabcde...
-Protein/peptide , 2 types, 2 molecules ln
#40: Protein/peptide | Mass: 6324.579 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Oryctolagus cuniculus (rabbit) / References: UniProt: G1TTN1 |
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#42: Protein/peptide | Mass: 3473.451 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Oryctolagus cuniculus (rabbit) |
-Non-polymers , 3 types, 307 molecules
#84: Chemical | ChemComp-MG / #85: Chemical | ChemComp-ZN / #86: Chemical | ChemComp-GDP / | |
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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 |
-Sample preparation
Component | Name: Rabbit 80S ribosome with eEF2 and SERBP1 (rotated state) Type: RIBOSOME / Entity ID: #1-#83 / Source: NATURAL |
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Molecular weight | Experimental value: NO |
Source (natural) | Organism: Oryctolagus cuniculus (rabbit) / Cellular location: cytoplasm |
Buffer solution | pH: 7.4 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Grid material: COPPER / Grid mesh size: 400 divisions/in. / Grid type: Quantifoil R2/2 |
Vitrification | Instrument: FEI VITROBOT MARK II / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K |
-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 FIELDBright-field microscopy / Calibrated magnification: 104478 X / Cs: 2.7 mm |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Average exposure time: 1.1 sec. / Electron dose: 40 e/Å2 / Detector mode: INTEGRATING / Film or detector model: FEI FALCON II (4k x 4k) |
Image scans | Movie frames/image: 17 / Used frames/image: 1-17 |
-Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 133480 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: OTHER / Space: REAL | ||||||||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 5LZV |