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Yorodumi- PDB-4v8z: Cryo-EM reconstruction of the 80S-eIF5B-Met-itRNAMet Eukaryotic T... -
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Open data
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Basic information
| Entry | Database: PDB / ID: 4v8z | |||||||||||||||||||||
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| Title | Cryo-EM reconstruction of the 80S-eIF5B-Met-itRNAMet Eukaryotic Translation Initiation Complex | |||||||||||||||||||||
Components |
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Keywords | RIBOSOME / RIBOSOME INITIATION COMPLEX / INITIATOR FACTOR EIF5B / SINGLE PARTICLE ANALYSIS | |||||||||||||||||||||
| Function / homology | Function and homology informationtriplex DNA binding / Platelet degranulation / regulation of translational initiation in response to stress / translation elongation factor binding / ribosome hibernation / formation of cytoplasmic translation initiation complex / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / eukaryotic 48S preinitiation complex / regulation of amino acid metabolic process / translational readthrough ...triplex DNA binding / Platelet degranulation / regulation of translational initiation in response to stress / translation elongation factor binding / ribosome hibernation / formation of cytoplasmic translation initiation complex / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / eukaryotic 48S preinitiation complex / regulation of amino acid metabolic process / translational readthrough / negative regulation of glucose mediated signaling pathway / positive regulation of translational fidelity / RMTs methylate histone arginines / Protein methylation / response to cycloheximide / mTORC1-mediated signalling / Protein hydroxylation / protein-synthesizing GTPase / regulation of translational initiation / pre-mRNA 5'-splice site binding / GDP-dissociation inhibitor activity / cytosolic large ribosomal subunit assembly / Ribosome Quality Control (RQC) complex extracts and degrades nascent peptide / ascospore wall assembly / Formation of the ternary complex, and subsequently, the 43S complex / Translation initiation complex formation / Ribosomal scanning and start codon recognition / positive regulation of nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / nonfunctional rRNA decay / preribosome, small subunit precursor / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / telomeric repeat DNA binding / mRNA destabilization / Major pathway of rRNA processing in the nucleolus and cytosol / PELO:HBS1L and ABCE1 dissociate a ribosome on a non-stop mRNA / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / 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) / positive regulation of protein kinase activity / preribosome, large subunit precursor / L13a-mediated translational silencing of Ceruloplasmin expression / negative regulation of mRNA splicing, via spliceosome / TOR signaling / negative regulation of translational frameshifting / translational elongation / ribosomal large subunit export from nucleus / G-protein alpha-subunit binding / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosomal subunit export from nucleus / 90S preribosome / regulation of translational fidelity / translational termination / maturation of LSU-rRNA / protein-RNA complex assembly / ribosome-associated ubiquitin-dependent protein catabolic process / 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 / ribosomal small subunit export from nucleus / DNA-(apurinic or apyrimidinic site) endonuclease activity / translation initiation factor activity / translation repressor activity / translation initiation factor binding / telomere maintenance / cellular response to amino acid starvation / protein kinase C binding / rescue of stalled cytosolic ribosome / cytosolic ribosome assembly / ribosome assembly / ribosomal large subunit biogenesis / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA / small-subunit processome / translational initiation / maintenance of translational fidelity / modification-dependent protein catabolic process / cytoplasmic stress granule / protein tag activity / rRNA processing / cytosolic ribosome / ribosomal small subunit assembly / ribosome binding / ribosomal small subunit biogenesis / ribosome biogenesis / 5S rRNA binding / ribosomal large subunit assembly / small ribosomal subunit / cytosolic small ribosomal subunit / small ribosomal subunit rRNA binding / large ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / cytoplasmic translation / negative regulation of translation / protein ubiquitination / rRNA binding / ribosome / translation / structural constituent of ribosome Similarity search - Function | |||||||||||||||||||||
| Biological species | ![]() ![]() METHANOTHERMOBACTER THERMAUTOTROPHICUS (archaea) | |||||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 6.6 Å | |||||||||||||||||||||
Authors | Fernandez, I.S. / Bai, X.C. / Hussain, T. / Kelley, A.C. / Lorsch, J.R. / Ramakrishnan, V. / Scheres, S.H.W. | |||||||||||||||||||||
Citation | Journal: Science / Year: 2013Title: Molecular architecture of a eukaryotic translational initiation complex. Authors: Israel S Fernández / Xiao-Chen Bai / Tanweer Hussain / Ann C Kelley / Jon R Lorsch / V Ramakrishnan / Sjors H W Scheres / ![]() Abstract: The last step in eukaryotic translational initiation involves the joining of the large and small subunits of the ribosome, with initiator transfer RNA (Met-tRNA(i)(Met)) positioned over the start ...The last step in eukaryotic translational initiation involves the joining of the large and small subunits of the ribosome, with initiator transfer RNA (Met-tRNA(i)(Met)) positioned over the start codon of messenger RNA in the P site. This step is catalyzed by initiation factor eIF5B. We used recent advances in cryo-electron microscopy (cryo-EM) to determine a structure of the eIF5B initiation complex to 6.6 angstrom resolution from <3% of the population, comprising just 5143 particles. The structure reveals conformational changes in eIF5B, initiator tRNA, and the ribosome that provide insights into the role of eIF5B in translational initiation. The relatively high resolution obtained from such a small fraction of a heterogeneous sample suggests a general approach for characterizing the structure of other dynamic or transient biological complexes. | |||||||||||||||||||||
| History |
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| Remark 700 | SHEET DETERMINATION METHOD: DSSP THE SHEETS PRESENTED AS "LA" IN EACH CHAIN ON SHEET RECORDS BELOW ... SHEET DETERMINATION METHOD: DSSP THE SHEETS PRESENTED AS "LA" IN EACH CHAIN ON SHEET RECORDS BELOW IS ACTUALLY AN 5-STRANDED BARREL THIS IS REPRESENTED BY A 6-STRANDED SHEET IN WHICH THE FIRST AND LAST STRANDS ARE IDENTICAL. THE SHEETS PRESENTED AS "XA" IN EACH CHAIN ON SHEET RECORDS BELOW IS ACTUALLY AN 5-STRANDED BARREL THIS IS REPRESENTED BY A 6-STRANDED SHEET IN WHICH THE FIRST AND LAST STRANDS ARE IDENTICAL. |
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Structure visualization
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| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 4v8z.cif.gz | 5.4 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb4v8z.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 4v8z.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/v8/4v8z ftp://data.pdbj.org/pub/pdb/validation_reports/v8/4v8z | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 2422MC ![]() 2421C ![]() 4v8yC M: map data used to model this data C: citing same article ( |
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| Similar structure data |
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Links
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Assembly
| Deposited unit | ![]()
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Components
+40S RIBOSOMAL PROTEIN ... , 31 types, 31 molecules A0A1A2A3A4AAABACADAEAFAGAHAIAJAKALAMANAOAPAQARASATAUAVAWAXAYAZ
-Protein , 5 types, 5 molecules A5A6A7BmCV
| #6: Protein | Mass: 16559.258 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #7: Protein | Mass: 34841.219 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #8: Protein | Mass: 29052.369 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #73: Protein | Mass: 14583.077 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #83: Protein | Mass: 65317.055 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() METHANOTHERMOBACTER THERMAUTOTROPHICUS (archaea)Production host: ![]() |
+60S RIBOSOMAL PROTEIN ... , 40 types, 40 molecules BABBBCBDBEBFBGBHBIBJBKBLBMBNBOBPBQBRBSBTBUBVBWBXBYBZBaBbBcBd...
-60S ACIDIC RIBOSOMAL PROTEIN ... , 3 types, 3 molecules BqBrBs
| #76: Protein | Mass: 33749.121 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #77: Protein/peptide | Mass: 4017.944 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #78: Protein/peptide | Mass: 3932.839 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-RNA chain , 6 types, 6 molecules B2B5B7B8CWCX
| #79: RNA chain | Mass: 577937.500 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #80: RNA chain | Mass: 1097493.875 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #81: RNA chain | Mass: 38951.105 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #82: RNA chain | Mass: 50682.922 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #84: RNA chain | Mass: 24422.475 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #85: RNA chain | Mass: 935.620 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Non-polymers , 4 types, 443 molecules 






| #86: Chemical | ChemComp-ZN / #87: Chemical | ChemComp-MG / #88: Chemical | ChemComp-OHX / #89: Chemical | ChemComp-GCP / | |
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-Details
| Has protein modification | N |
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| Sequence details | THESE ARE PARTS OF THE PROTEIN SEQUENCES MODELED AS UNK RESIDUES. |
-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
| Component | Name: RECONSTRUCTION OF 80S- EIF5B-MET-ITRNAMET EUKARYOTIC TRANSLATION INITIATION COMPLEX WITH TRNA IN THE PI-SITE AND Type: RIBOSOME |
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| Buffer solution | Name: 3MM HEPES-KOH, 6.6 MM TRIS-ACETATE PH 7.2, 3 MM NH4CL, 6.6 MM NH4- ACETATE, 48 MM K-ACETATE, 4 MM MG-ACETATE, 2.4 MM DTT pH: 7.2 Details: 3MM HEPES-KOH, 6.6 MM TRIS-ACETATE PH 7.2, 3 MM NH4CL, 6.6 MM NH4- ACETATE, 48 MM K-ACETATE, 4 MM MG-ACETATE, 2.4 MM DTT |
| Specimen | Conc.: 0.3 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Specimen support | Details: HOLEY CARBON |
| Vitrification | Instrument: FEI VITROBOT MARK II / Cryogen name: ETHANE Details: VITRIFICATION 1 -- CRYOGEN- ETHANE, HUMIDITY- 100, TEMPERATURE- 90, INSTRUMENT- FEI VITROBOT MARK II, METHOD- BLOT 2.5 SECONDS BEFORE PLUNGING, |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Tecnai Polara / Image courtesy: FEI Company |
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| Microscopy | Model: FEI POLARA 300 / Date: Jan 15, 2013 |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 59000 X / Calibrated magnification: 79096 X / Nominal defocus max: 3900 nm / Nominal defocus min: 1900 nm / Cs: 2 mm |
| Specimen holder | Temperature: 85 K |
| Image recording | Electron dose: 16 e/Å2 / Film or detector model: FEI FALCON I (4k x 4k) |
| Image scans | Num. digital images: 1012 |
| Radiation wavelength | Relative weight: 1 |
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Processing
| EM software |
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| CTF correction | Details: EACH PARTICLE | ||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||
| 3D reconstruction | Resolution: 6.6 Å / Num. of particles: 5143 / Actual pixel size: 1.77 Å Magnification calibration: CROSS-CORRELATION BETWEEN CRYO-EM MAP AND CRYSTAL STRUCTURE Details: USE A NEWLY DEVELOPED STATISTICAL MOVIE PROCESSING APPROACH TO COMPENSATE FOR BEAM-INDUCED MOVEMENT. SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-2422. (DEPOSITION ID: 11817). Symmetry type: POINT | ||||||||||||
| Atomic model building | Protocol: RIGID BODY FIT / Details: METHOD--RIGID-BODY FITTING | ||||||||||||
| Refinement | Highest resolution: 6.6 Å | ||||||||||||
| Refinement step | Cycle: LAST / Highest resolution: 6.6 Å
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METHANOTHERMOBACTER THERMAUTOTROPHICUS (archaea)
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