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Open data
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Basic information
| Entry | Database: PDB / ID: 6zmw | ||||||||||||
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| Title | Structure of a human 48S translational initiation complex | ||||||||||||
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Keywords | TRANSLATION / ribosome / initiation complex | ||||||||||||
| Function / homology | Function and homology informationpositive regulation of eukaryotic translation initiation factor 4F complex assembly / : / male germ cell proliferation / positive regulation of mRNA binding / positive regulation of translation in response to endoplasmic reticulum stress / translation initiation ternary complex / regulation of translation in response to endoplasmic reticulum stress / glial limiting end-foot / HRI-mediated signaling / response to manganese-induced endoplasmic reticulum stress ...positive regulation of eukaryotic translation initiation factor 4F complex assembly / : / male germ cell proliferation / positive regulation of mRNA binding / positive regulation of translation in response to endoplasmic reticulum stress / translation initiation ternary complex / regulation of translation in response to endoplasmic reticulum stress / glial limiting end-foot / HRI-mediated signaling / response to manganese-induced endoplasmic reticulum stress / viral translational termination-reinitiation / Cellular response to mitochondrial stress / positive regulation of type B pancreatic cell apoptotic process / Response of EIF2AK1 (HRI) to heme deficiency / Recycling of eIF2:GDP / Activation of the mRNA upon binding of the cap-binding complex and eIFs, and subsequent binding to 43S / methionyl-initiator methionine tRNA binding / negative regulation of translational initiation in response to stress / eukaryotic translation initiation factor 3 complex, eIF3e / PERK-mediated unfolded protein response / cap-dependent translational initiation / eukaryotic initiation factor 4E binding / eukaryotic translation initiation factor 3 complex, eIF3m / PERK regulates gene expression / IRES-dependent viral translational initiation / regulation of cellular response to stress / response to kainic acid / translation reinitiation / eukaryotic translation initiation factor 2 complex / nuclear stress granule / RNA cap binding / eukaryotic translation initiation factor 4F complex / Z-decay: degradation of maternal mRNAs by zygotically expressed factors / formation of cytoplasmic translation initiation complex / eukaryotic translation initiation factor 3 complex / cytoplasmic translational initiation / multi-eIF complex / regulation of translational initiation in response to stress / translation factor activity, RNA binding / eukaryotic 43S preinitiation complex / formation of translation preinitiation complex / mRNA cap binding / Deadenylation of mRNA / miRNA-mediated gene silencing by inhibition of translation / eukaryotic 48S preinitiation complex / M-decay: degradation of maternal mRNAs by maternally stored factors / oxidized pyrimidine DNA binding / response to TNF agonist / negative regulation of endoplasmic reticulum unfolded protein response / positive regulation of base-excision repair / positive regulation of respiratory burst involved in inflammatory response / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / positive regulation of gastrulation / 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 / protein-synthesizing GTPase / negative regulation of DNA repair / negative regulation of RNA splicing / metal-dependent deubiquitinase activity / nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / regulation of translational initiation / positive regulation of protein localization to cell periphery / supercoiled DNA binding / NF-kappaB complex / neural crest cell differentiation / oxidized purine DNA binding / cysteine-type endopeptidase activator activity involved in apoptotic process / 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 / protein kinase A binding / laminin receptor activity / ion channel inhibitor activity / Ribosomal scanning and start codon recognition / pigmentation / Translation initiation complex formation / positive regulation of mitochondrial depolarization / positive regulation of protein metabolic process / positive regulation of T cell receptor signaling pathway / fibroblast growth factor binding / negative regulation of Wnt signaling pathway / monocyte chemotaxis / TOR signaling / negative regulation of translational frameshifting / BH3 domain binding / Protein hydroxylation / positive regulation of activated T cell proliferation / SARS-CoV-1 modulates host translation machinery Similarity search - Function | ||||||||||||
| Biological species | Homo sapiens (human) | ||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.7 Å | ||||||||||||
Authors | Brito Querido, J. / Sokabe, M. / Kraatz, S. / Gordiyenko, Y. / Skehel, M. / Fraser, C. / Ramakrishnan, V. | ||||||||||||
| Funding support | United Kingdom, United States, 3items
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Citation | Journal: Science / Year: 2020Title: Structure of a human 48 translational initiation complex. Authors: Jailson Brito Querido / Masaaki Sokabe / Sebastian Kraatz / Yuliya Gordiyenko / J Mark Skehel / Christopher S Fraser / V Ramakrishnan / ![]() Abstract: A key step in translational initiation is the recruitment of the 43 preinitiation complex by the cap-binding complex [eukaryotic initiation factor 4F (eIF4F)] at the 5' end of messenger RNA (mRNA) to ...A key step in translational initiation is the recruitment of the 43 preinitiation complex by the cap-binding complex [eukaryotic initiation factor 4F (eIF4F)] at the 5' end of messenger RNA (mRNA) to form the 48 initiation complex (i.e., the 48). The 48 then scans along the mRNA to locate a start codon. To understand the mechanisms involved, we used cryo-electron microscopy to determine the structure of a reconstituted human 48 The structure reveals insights into early events of translation initiation complex assembly, as well as how eIF4F interacts with subunits of eIF3 near the mRNA exit channel in the 43 The location of eIF4F is consistent with a slotting model of mRNA recruitment and suggests that downstream mRNA is unwound at least in part by being "pulled" through the 40 subunit during scanning. | ||||||||||||
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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 | 6zmw.cif.gz | 2.7 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb6zmw.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 6zmw.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 6zmw_validation.pdf.gz | 261.5 KB | Display | wwPDB validaton report |
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| Full document | 6zmw_full_validation.pdf.gz | 265 KB | Display | |
| Data in XML | 6zmw_validation.xml.gz | 124.7 KB | Display | |
| Data in CIF | 6zmw_validation.cif.gz | 205.3 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/zm/6zmw ftp://data.pdbj.org/pub/pdb/validation_reports/zm/6zmw | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 11302MC ![]() 6ybdC ![]() 6ybsC ![]() 6ybtC ![]() 6ybvC ![]() 6ybwC C: citing same article ( M: map data used to model this data |
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| Similar structure data |
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Links
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Assembly
| Deposited unit | ![]()
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Components
-Eukaryotic translation initiation factor ... , 19 types, 19 molecules 2164uvy8x35ropqzstg
| #1: Protein | Mass: 36543.773 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q13347 |
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| #2: Protein | Mass: 92593.414 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P55884 |
| #3: Protein | Mass: 42555.832 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q7L2H7 |
| #4: Protein | Mass: 37593.645 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O00303, ubiquitinyl hydrolase 1 |
| #5: Protein | Mass: 166903.781 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q14152 |
| #6: Protein | Mass: 52281.633 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P60228 |
| #8: Protein | Mass: 105503.945 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q99613 |
| #9: Protein | Mass: 39979.277 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O15372 |
| #19: Protein | Mass: 64060.758 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O15371 |
| #20: Protein | Mass: 25083.619 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9UBQ5 |
| #21: Protein | Mass: 66803.734 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y262 |
| #30: Protein | Mass: 36161.180 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P05198 |
| #47: Protein | Mass: 35662.016 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O75821 |
| #48: Protein | Mass: 12752.498 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: EIF1, SUI1 / Production host: ![]() |
| #49: Protein | Mass: 16488.449 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: EIF1AX, EIF1A, EIF4C / Production host: ![]() |
| #50: Protein | Mass: 29108.453 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: EIF3J, EIF3S1, PRO0391 / Production host: ![]() |
| #53: Protein | Mass: 38454.484 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P20042 |
| #55: Protein | Mass: 51178.406 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P41091, protein-synthesizing GTPase |
| #57: Protein | Mass: 145733.172 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: EIF4G1, EIF4F, EIF4G, EIF4GI / Production host: ![]() |
+40S ribosomal protein ... , 31 types, 31 molecules SGHKLONQPIBCDEFJRTVYZabdefimnMh
-RNA chain , 3 types, 3 molecules 7Aw
| #22: RNA chain | Mass: 9172.806 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Production host: ![]() |
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| #24: RNA chain | Mass: 603130.375 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) |
| #54: RNA chain | Mass: 24231.510 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: GenBank: 174924 |
-Protein/peptide , 1 types, 1 molecules 9
| #23: Protein/peptide | Mass: 3473.451 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62945 |
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-Protein , 3 types, 3 molecules ckj
| #39: Protein | Mass: 35115.652 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P63244 |
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| #44: Protein | Mass: 18004.041 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62979 |
| #56: Protein | Mass: 46207.824 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: EIF4A1, DDX2A, EIF4A / Production host: ![]() |
-Non-polymers , 2 types, 91 molecules 


| #58: Chemical | | #59: Chemical | ChemComp-MG / |
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-Details
| Has ligand of interest | Y |
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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 |
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Sample preparation
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| Source (natural) |
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| Source (recombinant) | Organism: ![]() | ||||||||||||||||||||||||
| 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 | ||||||||||||||||||||||||
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % |
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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 FIELD |
| Image recording | Average exposure time: 1 sec. / Electron dose: 107 e/Å2 / Detector mode: INTEGRATING / Film or detector model: FEI FALCON III (4k x 4k) |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3D reconstruction | Resolution: 3.7 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 37870 / Symmetry type: POINT | ||||||||||||||||||||||||
| Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
| Displacement parameters | Biso mean: 100.73 Å2 | ||||||||||||||||||||||||
| Refine LS restraints |
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About Yorodumi




Homo sapiens (human)
United Kingdom,
United States, 3items
Citation
UCSF Chimera


















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