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Yorodumi- EMDB-2875: Cryo electron microscopy of actively translating human polysomes ... -
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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 | |||||||||
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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 / exit from mitosis / optic nerve development / response to insecticide / eukaryotic 80S initiation complex / negative regulation of protein neddylation / regulation of translation involved in cellular response to UV / axial mesoderm development / negative regulation of formation of translation preinitiation complex ...embryonic brain development / translation at presynapse / exit from mitosis / optic nerve development / response to insecticide / eukaryotic 80S initiation complex / negative regulation of protein neddylation / regulation of translation involved in cellular response to UV / axial mesoderm development / negative regulation of formation of translation preinitiation complex / regulation of G1 to G0 transition / retinal ganglion cell axon guidance / ribosomal protein import into nucleus / oxidized pyrimidine DNA binding / response to TNF agonist / negative regulation of endoplasmic reticulum unfolded protein response / positive regulation of base-excision repair / protein-DNA complex disassembly / positive regulation of respiratory burst involved in inflammatory response / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / positive regulation of gastrulation / 90S preribosome assembly / 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 / alpha-beta T cell differentiation / negative regulation of DNA repair / negative regulation of RNA splicing / GAIT complex / positive regulation of DNA damage response, signal transduction by p53 class mediator / TORC2 complex binding / G1 to G0 transition / supercoiled DNA binding / NF-kappaB complex / neural crest cell differentiation / oxidized purine DNA binding / cysteine-type endopeptidase activator activity involved in apoptotic process / middle ear morphogenesis / 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 / homeostatic process / ion channel inhibitor activity / Ribosomal scanning and start codon recognition / pigmentation / Translation initiation complex formation / positive regulation of mitochondrial depolarization / macrophage chemotaxis / lung morphogenesis / positive regulation of T cell receptor signaling pathway / fibroblast growth factor binding / negative regulation of Wnt signaling pathway / positive regulation of natural killer cell proliferation / 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 / cellular response to actinomycin D / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Eukaryotic Translation Termination / blastocyst development / 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 / protein localization to nucleus / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / GTP hydrolysis and joining of the 60S ribosomal subunit / positive regulation of protein binding 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. | |||||||||
| History |
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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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