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Basic information
| Entry | Database: EMDB / ID: EMD-5977 | |||||||||
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| Title | Structures of yeast 80S ribosome-tRNA complexes in the rotated and non-rotated conformations (Class I - 2 tRNA in non-rotated conformation) | |||||||||
Map data | Reconstruction of a yeast 80S ribosome in the classical state with 2 tRNA bound. (Class I) | |||||||||
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Keywords | 80S ribosome / Kozak sequence / translation | |||||||||
| Function / homology | Function and homology informationmaturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / regulation of amino acid metabolic process / negative regulation of glucose mediated signaling pathway / positive regulation of translational fidelity / Negative regulators of DDX58/IFIH1 signaling / RMTs methylate histone arginines / Protein methylation / mTORC1-mediated signalling / Protein hydroxylation / ribosome-associated ubiquitin-dependent protein catabolic process ...maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / regulation of amino acid metabolic process / negative regulation of glucose mediated signaling pathway / positive regulation of translational fidelity / Negative regulators of DDX58/IFIH1 signaling / RMTs methylate histone arginines / Protein methylation / mTORC1-mediated signalling / Protein hydroxylation / ribosome-associated ubiquitin-dependent protein catabolic process / GDP-dissociation inhibitor activity / pre-mRNA 5'-splice site binding / positive regulation of nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / nonfunctional rRNA decay / Formation of the ternary complex, and subsequently, the 43S complex / Translation initiation complex formation / response to cycloheximide / Ribosomal scanning and start codon recognition / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / preribosome, small subunit precursor / mRNA destabilization / Major pathway of rRNA processing in the nucleolus and cytosol / negative regulation of translational frameshifting / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / negative regulation of mRNA splicing, via spliceosome / positive regulation of protein kinase activity / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / preribosome, large subunit precursor / Formation of a pool of free 40S subunits / L13a-mediated translational silencing of Ceruloplasmin expression / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / translational elongation / ribosomal large subunit export from nucleus / G-protein alpha-subunit binding / 90S preribosome / Ub-specific processing proteases / regulation of translational fidelity / protein-RNA complex assembly / translational termination / ribosomal subunit export from nucleus / maturation of LSU-rRNA / ribosomal small subunit export from nucleus / 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) / translation regulator activity / DNA-(apurinic or apyrimidinic site) endonuclease activity / rescue of stalled ribosome / protein kinase C binding / cellular response to amino acid starvation / ribosomal large subunit biogenesis / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosome assembly / maturation of SSU-rRNA / macroautophagy / small-subunit processome / translational initiation / maintenance of translational fidelity / modification-dependent protein catabolic process / protein tag activity / cytoplasmic stress granule / rRNA processing / ribosome biogenesis / ribosome binding / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / 5S rRNA binding / ribosomal large subunit assembly / small ribosomal subunit rRNA binding / large ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / cytosolic large ribosomal subunit / cytoplasmic translation / negative regulation of translation / rRNA binding / protein ubiquitination / structural constituent of ribosome / ribosome / translation / G protein-coupled receptor signaling pathway / negative regulation of gene expression / response to antibiotic / mRNA binding / ubiquitin protein ligase binding / nucleolus / mitochondrion / RNA binding / zinc ion binding / nucleoplasm / nucleus / cytoplasm / cytosol Similarity search - Function | |||||||||
| Biological species | ![]() ![]() | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 6.3 Å | |||||||||
Authors | Svidritskiy E / Brilot AF / Koh CS / Grigorieff N / Korostelev AA | |||||||||
Citation | Journal: Structure / Year: 2014Title: Structures of yeast 80S ribosome-tRNA complexes in the rotated and nonrotated conformations. Authors: Egor Svidritskiy / Axel F Brilot / Cha San Koh / Nikolaus Grigorieff / Andrei A Korostelev / ![]() Abstract: The structural understanding of eukaryotic translation lags behind that of translation on bacterial ribosomes. Here, we present two subnanometer resolution structures of S. cerevisiae 80S ribosome ...The structural understanding of eukaryotic translation lags behind that of translation on bacterial ribosomes. Here, we present two subnanometer resolution structures of S. cerevisiae 80S ribosome complexes formed with either one or two tRNAs and bound in response to an mRNA fragment containing the Kozak consensus sequence. The ribosomes adopt two globally different conformations that are related to each other by the rotation of the small subunit. Comparison with bacterial ribosome complexes reveals that the global structures and modes of intersubunit rotation of the yeast ribosome differ significantly from those in the bacterial counterpart, most notably in the regions involving the tRNA, small ribosomal subunit, and conserved helix 69 of the large ribosomal subunit. The structures provide insight into ribosome dynamics implicated in tRNA translocation and help elucidate the role of the Kozak fragment in positioning an open reading frame during translation initiation in eukaryotes. | |||||||||
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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_5977.map.gz | 161.4 MB | EMDB map data format | |
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| Header (meta data) | emd-5977-v30.xml emd-5977.xml | 16.1 KB 16.1 KB | Display Display | EMDB header |
| Images | 400_5977.gif 80_5977.gif | 60.3 KB 4.9 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-5977 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-5977 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 3j78MC ![]() 5976C ![]() 3j77C C: citing same article ( M: atomic model generated by this map |
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| Similar structure data | |
| EM raw data | EMPIAR-10016 (Title: Yeast 80S Ribosome - tRNA- Kozak mRNA complexes, Frealign Input Particle StackData size: 42.0 Data #1: Frealign input particle stack [picked particles - multiframe - processed]) |
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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_5977.map.gz / Format: CCP4 / Size: 173.8 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Annotation | Reconstruction of a yeast 80S ribosome in the classical state with 2 tRNA bound. (Class I) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.05 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 : 80S ribosome bound to mRNA containing Kozak sequence and to two tRNA
| Entire | Name: 80S ribosome bound to mRNA containing Kozak sequence and to two tRNA |
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| Components |
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-Supramolecule #1000: 80S ribosome bound to mRNA containing Kozak sequence and to two tRNA
| Supramolecule | Name: 80S ribosome bound to mRNA containing Kozak sequence and to two tRNA type: sample / ID: 1000 / Details: Sample was monodisperse. / Number unique components: 3 |
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| Molecular weight | Experimental: 3.5 MDa |
-Supramolecule #1: 80S ribosome
| Supramolecule | Name: 80S ribosome / type: complex / ID: 1 / Recombinant expression: No / Database: NCBI / Ribosome-details: ribosome-eukaryote: ALL |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Experimental: 3.5 MDa |
-Macromolecule #1: transfer RNA
| Macromolecule | Name: transfer RNA / type: rna / ID: 1 / Name.synonym: tRNA / Details: tRNA fmet / Classification: TRANSFER / Structure: OTHER / Synthetic?: No |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Theoretical: 25 KDa |
-Macromolecule #2: mRNA
| Macromolecule | Name: mRNA / type: rna / ID: 2 / Classification: OTHER / Structure: SINGLE STRANDED / Synthetic?: Yes |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Theoretical: 5 KDa |
| Sequence | String: AAAAAUGUAA AAAA |
-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 | 1.2 mg/mL |
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| Buffer | pH: 7.5 Details: 20 mM Tris-HCl, 50 mM NH4Cl, 20 mM MgCl2, 0.3 U/uL RNasin |
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 95 % / Instrument: FEI VITROBOT MARK II |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Date | Jan 2, 2013 |
| Image recording | Category: CCD / Film or detector model: FEI FALCON I (4k x 4k) / Digitization - Sampling interval: 14 µm / Number real images: 4754 / Average electron dose: 30 e/Å2 / Bits/pixel: 16 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Calibrated magnification: 133333 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 0.01 mm / Nominal defocus max: 4.844 µm / Nominal defocus min: 1.159 µm / Nominal magnification: 133333 |
| 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: CTFFIND3, FREALIGN per micrograph |
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| Final reconstruction | Algorithm: OTHER / Resolution.type: BY AUTHOR / Resolution: 6.3 Å / Resolution method: OTHER / Software - Name: EMAN2, IMAGIC, FREALIGN, RSAMPLE, CTFFIND3 / Number images used: 23163 |
-Atomic model buiding 1
| Initial model | PDB ID: ![]() 3u5b |
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| Software | Name: Chimera, CNS |
| Details | 3U5B, 3U5C, 3U5D, and 3U5E were combined prior to fitting. tRNAs and mRNA were modeled using individual tRNAs and mRNA from the crystal structure (3I9B) of the classical-state 70S ribosome. The structure of rpL1 was obtained by homology modeling from PDB ID 3J3B. |
| Refinement | Space: REAL / Protocol: RIGID BODY FIT / Target criteria: cross-correlation |
| Output model | ![]() PDB-3j78: |
-Atomic model buiding 2
| Initial model | PDB ID: ![]() 3u5c |
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| Software | Name: Chimera, CNS |
| Details | 3U5B, 3U5C, 3U5D, and 3U5E were combined prior to fitting. tRNAs and mRNA were modeled using individual tRNAs and mRNA from the crystal structure (3I9B) of the classical-state 70S ribosome. The structure of rpL1 was obtained by homology modeling from PDB ID 3J3B. |
| Refinement | Space: REAL / Protocol: RIGID BODY FIT / Target criteria: cross-correlation |
| Output model | ![]() PDB-3j78: |
-Atomic model buiding 3
| Initial model | PDB ID: ![]() 3u5d |
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| Software | Name: Chimera, CNS |
| Details | 3U5B, 3U5C, 3U5D, and 3U5E were combined prior to fitting. tRNAs and mRNA were modeled using individual tRNAs and mRNA from the crystal structure (3I9B) of the classical-state 70S ribosome. The structure of rpL1 was obtained by homology modeling from PDB ID 3J3B. |
| Refinement | Space: REAL / Protocol: RIGID BODY FIT / Target criteria: cross-correlation |
| Output model | ![]() PDB-3j78: |
-Atomic model buiding 4
| Initial model | PDB ID: ![]() 3u5e |
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| Software | Name: Chimera, CNS |
| Details | 3U5B, 3U5C, 3U5D, and 3U5E were combined prior to fitting. tRNAs and mRNA were modeled using individual tRNAs and mRNA from the crystal structure (3I9B) of the classical-state 70S ribosome. The structure of rpL1 was obtained by homology modeling from PDB ID 3J3B. |
| Refinement | Space: REAL / Protocol: RIGID BODY FIT / Target criteria: cross-correlation |
| Output model | ![]() PDB-3j78: |
-Atomic model buiding 5
| Initial model | PDB ID: ![]() 3i9b Chain - #0 - Chain ID: 1 / Chain - #1 - Chain ID: C / Chain - #2 - Chain ID: D |
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| Software | Name: Chimera, CNS |
| Details | 3U5B, 3U5C, 3U5D, and 3U5E were combined prior to fitting. tRNAs and mRNA were modeled using individual tRNAs and mRNA from the crystal structure (3I9B) of the classical-state 70S ribosome. The structure of rpL1 was obtained by homology modeling from PDB ID 3J3B. |
| Refinement | Space: REAL / Protocol: RIGID BODY FIT / Target criteria: cross-correlation |
| Output model | ![]() PDB-3j78: |
-Atomic model buiding 6
| Initial model | PDB ID: ![]() 3j3b |
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| Software | Name: Chimera, CNS |
| Details | 3U5B, 3U5C, 3U5D, and 3U5E were combined prior to fitting. tRNAs and mRNA were modeled using individual tRNAs and mRNA from the crystal structure (3I9B) of the classical-state 70S ribosome. The structure of rpL1 was obtained by homology modeling from PDB ID 3J3B. |
| Refinement | Space: REAL / Protocol: RIGID BODY FIT / Target criteria: cross-correlation |
| Output model | ![]() PDB-3j78: |
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