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Yorodumi- EMDB-2875: Cryo electron microscopy of actively translating human polysomes ... -
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Open data
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Basic information
| Entry | Database: EMDB / ID: EMD-2875 | |||||||||
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| Title | Cryo electron microscopy of actively translating human polysomes (POST state). | |||||||||
Map data | POST state of human polysomes | |||||||||
Sample |
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Keywords | mammalian ribosome / translation / polysome / cryo electron microscopy / elongation cycle | |||||||||
| Function / homology | Function and homology informationembryonic brain development / translation at presynapse / response to insecticide / regulation of translation involved in cellular response to UV / eukaryotic 80S initiation complex / ribosomal protein import into nucleus / negative regulation of endoplasmic reticulum unfolded protein response / regulation of G1 to G0 transition / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / oxidized pyrimidine DNA binding ...embryonic brain development / translation at presynapse / response to insecticide / regulation of translation involved in cellular response to UV / eukaryotic 80S initiation complex / ribosomal protein import into nucleus / negative regulation of endoplasmic reticulum unfolded protein response / regulation of G1 to G0 transition / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / protein-DNA complex disassembly / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / positive regulation of respiratory burst involved in inflammatory response / positive regulation of gastrulation / protein tyrosine kinase inhibitor activity / IRE1-RACK1-PP2A complex / positive regulation of Golgi to plasma membrane protein transport / nucleolus organization / TNFR1-mediated ceramide production / negative regulation of formation of translation preinitiation complex / positive regulation of DNA damage response, signal transduction by p53 class mediator / positive regulation of ubiquitin-protein transferase activity / GAIT complex / positive regulation of DNA-templated transcription initiation / negative regulation of RNA splicing / negative regulation of DNA repair / TORC2 complex binding / G1 to G0 transition / PD-L1(CD274) glycosylation and translocation to plasma membrane / Enterobacterial factors antagonize host defense / erythrocyte homeostasis / supercoiled DNA binding / regulation of establishment of cell polarity / cysteine-type endopeptidase activator activity involved in apoptotic process / oxidized purine DNA binding / NF-kappaB complex / cytoplasmic translational initiation / rRNA modification in the nucleus and cytosol / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / negative regulation of phagocytosis / negative regulation of bicellular tight junction assembly / ubiquitin-like protein conjugating enzyme binding / cytoplasmic side of rough endoplasmic reticulum membrane / Formation of the ternary complex, and subsequently, the 43S complex / laminin receptor activity / negative regulation of myoblast fusion / ion channel inhibitor activity / protein kinase A binding / positive regulation of mitochondrial depolarization / Ribosomal scanning and start codon recognition / PELO:HBS1L and ABCE1 dissociate a ribosome on a non-stop mRNA / Translation initiation complex formation / negative regulation of Wnt signaling pathway / Dengue Virus Genome Translation and Replication / Maturation of DENV proteins / fibroblast growth factor binding / ZNF598 and the Ribosome-associated Quality Trigger (RQT) complex dissociate a ribosome stalled on a no-go mRNA / Protein hydroxylation / TOR signaling / BH3 domain binding / negative regulation of translational frameshifting / iron-sulfur cluster binding / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / monocyte chemotaxis / mTORC1-mediated signalling / SARS-CoV-1 modulates host translation machinery / regulation of cell division / positive regulation of GTPase activity / Peptide chain elongation / cellular response to ethanol / protein targeting / Selenocysteine synthesis / Dengue Virus Attachment and Entry / Formation of a pool of free 40S subunits / negative regulation of protein binding / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / Eukaryotic Translation Termination / negative regulation of respiratory burst involved in inflammatory response / protein serine/threonine kinase inhibitor activity / protein localization to nucleus / SRP-dependent cotranslational protein targeting to membrane / Response of EIF2AK4 (GCN2) to amino acid deficiency / AMPK-induced ERAD and lysosome mediated degradation of PD-L1(CD274) / negative regulation of ubiquitin-dependent protein catabolic process / ubiquitin ligase inhibitor activity / Viral mRNA Translation / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / positive regulation of signal transduction by p53 class mediator / GTP hydrolysis and joining of the 60S ribosomal subunit / embryo implantation / L13a-mediated translational silencing of Ceruloplasmin expression / Major pathway of rRNA processing in the nucleolus and cytosol / GSK3B-mediated proteasomal degradation of PD-L1(CD274) / regulation of translational fidelity / positive regulation of microtubule polymerization / SPOP-mediated proteasomal degradation of PD-L1(CD274) / phagocytic cup Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.5 Å | |||||||||
Authors | Behrmann E / Loerke J / Budkevich TV / Yamamoto K / Schmidt A / Penczek PA / Vos MR / Burger J / Mielke T / Scheerer P / Spahn CMT | |||||||||
Citation | Journal: Cell / Year: 2015Title: Structural snapshots of actively translating human ribosomes. Authors: Elmar Behrmann / Justus Loerke / Tatyana V Budkevich / Kaori Yamamoto / Andrea Schmidt / Pawel A Penczek / Matthijn R Vos / Jörg Bürger / Thorsten Mielke / Patrick Scheerer / Christian M T Spahn / ![]() Abstract: Macromolecular machines, such as the ribosome, undergo large-scale conformational changes during their functional cycles. Although their mode of action is often compared to that of mechanical ...Macromolecular machines, such as the ribosome, undergo large-scale conformational changes during their functional cycles. Although their mode of action is often compared to that of mechanical machines, a crucial difference is that, at the molecular dimension, thermodynamic effects dominate functional cycles, with proteins fluctuating stochastically between functional states defined by energetic minima on an energy landscape. Here, we have used cryo-electron microscopy to image ex-vivo-derived human polysomes as a source of actively translating ribosomes. Multiparticle refinement and 3D variability analysis allowed us to visualize a variety of native translation intermediates. Significantly populated states include not only elongation cycle intermediates in pre- and post-translocational states, but also eEF1A-containing decoding and termination/recycling complexes. Focusing on the post-translocational state, we extended this assessment to the single-residue level, uncovering striking details of ribosome-ligand interactions and identifying both static and functionally important dynamic elements. | |||||||||
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Structure visualization
| Movie |
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| Structure viewer | EM map: SurfView Molmil Jmol/JSmol |
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_2875.map.gz | 152.8 MB | EMDB map data format | |
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| Header (meta data) | emd-2875-v30.xml emd-2875.xml | 10.9 KB 10.9 KB | Display Display | EMDB header |
| Images | post.tif | 3.1 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-2875 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-2875 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 5aj0MC ![]() 2902C ![]() 2903C ![]() 2904C ![]() 2905C ![]() 2906C ![]() 2907C ![]() 2908C ![]() 2909C ![]() 2910C ![]() 2911C M: atomic model generated by this map C: citing same article ( |
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| Similar structure data |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_2875.map.gz / Format: CCP4 / Size: 238.4 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Annotation | POST state of human polysomes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 0.945 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : Native ribosomal complex from polysomes - POST state
| Entire | Name: Native ribosomal complex from polysomes - POST state |
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| Components |
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-Supramolecule #1000: Native ribosomal complex from polysomes - POST state
| Supramolecule | Name: Native ribosomal complex from polysomes - POST state / type: sample / ID: 1000 / Details: The sample was monodisperse / Number unique components: 1 |
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| Molecular weight | Experimental: 4.5 MDa / Theoretical: 4.5 MDa |
-Supramolecule #1: 80S ribosomal complex
| Supramolecule | Name: 80S ribosomal complex / type: complex / ID: 1 / Name.synonym: 80S ribosome Details: The sample was isolated as polysomes from the cell. Structural analysis shows that the complex contains 2 tRNAs and mRNA. Recombinant expression: No / Ribosome-details: ribosome-eukaryote: ALL |
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| Source (natural) | Organism: Homo sapiens (human) / Strain: HEK 293T / synonym: Human / Tissue: Kidney / Cell: HEK 293T / Location in cell: Cytoplasm |
| Molecular weight | Experimental: 4.5 MDa / Theoretical: 4.5 MDa |
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Concentration | 3.5 mg/mL |
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| Buffer | pH: 7.5 Details: 20 mM Hepes-KOH, pH 7.5, 100 mM KCl, 1.5 mM MgCl2, 0.5 mM spermidine, 0.04 mM spermine, 1 mM DTT |
| Grid | Details: Quantifoil grids with additional continuous carbon support |
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 93 K / Instrument: FEI VITROBOT MARK II / Method: blot for 2-4 seconds before plunging |
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Electron microscopy #1
| Microscopy ID | 1 |
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| Microscope | FEI POLARA 300 |
| Details | Data was collected automatically with Leginon |
| Date | Aug 20, 2012 |
| Image recording | Category: CCD / Film or detector model: TVIPS TEMCAM-F416 (4k x 4k) / Number real images: 51282 / Average electron dose: 20 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Calibrated magnification: 205000 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.0 mm / Nominal defocus max: 4.5 µm / Nominal defocus min: 2.0 µm / Nominal magnification: 115000 |
| Sample stage | Specimen holder model: GATAN LIQUID NITROGEN |
| Experimental equipment | ![]() Model: Tecnai Polara / Image courtesy: FEI Company |
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Electron microscopy #2
| Microscopy ID | 2 |
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| Microscope | FEI TITAN KRIOS |
| Date | Nov 29, 2012 |
| Image recording | Category: CCD / Film or detector model: FEI FALCON II (4k x 4k) / Number real images: 51282 / Average electron dose: 20 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Calibrated magnification: 172000 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 4.5 µm / Nominal defocus min: 1.5 µm / Nominal magnification: 96000 |
| Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
| CTF correction | Details: Each micrograph |
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| Final reconstruction | Applied symmetry - Point group: C1 (asymmetric) / Algorithm: OTHER / Resolution.type: BY AUTHOR / Resolution: 3.5 Å / Resolution method: OTHER / Software - Name: Signature, CTFFind3, Spider, SPARX Details: Maps were calculated from 2 datasets using SSNR-weighted combination. Number images used: 313321 |
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Keywords
Homo sapiens (human)
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