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Yorodumi- PDB-5t6r: Nmd3 is a structural mimic of eIF5A, and activates the cpGTPase L... -
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Basic information
| Entry | Database: PDB / ID: 5t6r | ||||||||||||
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| Title | Nmd3 is a structural mimic of eIF5A, and activates the cpGTPase Lsg1 during 60S ribosome biogenesis: 60S-Nmd3 Complex | ||||||||||||
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Keywords | RIBOSOME / Ribosome Biogenesis / 60S / Nmd3 / Lsg1 / Tif6 / cryo-em | ||||||||||||
| Function / homology | Function and homology informationpre-mRNA 5'-splice site binding / response to cycloheximide / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosomal large subunit binding / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / negative regulation of mRNA splicing, via spliceosome / 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 ...pre-mRNA 5'-splice site binding / response to cycloheximide / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosomal large subunit binding / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / negative regulation of mRNA splicing, via spliceosome / 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 / translational elongation / carbohydrate transmembrane transporter activity / maltose binding / ribosomal large subunit export from nucleus / maltose transport / maltodextrin transmembrane transport / protein-RNA complex assembly / regulation of translational fidelity / translational termination / maturation of LSU-rRNA / ATP-binding cassette (ABC) transporter complex, substrate-binding subunit-containing / ribosomal large subunit biogenesis / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / macroautophagy / translational initiation / maintenance of translational fidelity / modification-dependent protein catabolic process / protein tag activity / rRNA processing / protein transport / ribosome biogenesis / 5S rRNA binding / ribosomal large subunit assembly / large ribosomal subunit rRNA binding / protein-macromolecule adaptor activity / cytosolic large ribosomal subunit / cytoplasmic translation / periplasmic space / negative regulation of translation / rRNA binding / protein ubiquitination / structural constituent of ribosome / ribosome / translation / response to antibiotic / mRNA binding / ubiquitin protein ligase binding / nucleolus / RNA binding / zinc ion binding / nucleoplasm / nucleus / cytosol / cytoplasm Similarity search - Function | ||||||||||||
| Biological species | ![]() | ||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.2 Å | ||||||||||||
Authors | Malyutin, A.G. / Musalgaonkar, S. / Patchett, S. / Frank, J. / Johnson, A.W. | ||||||||||||
| Funding support | United States, 3items
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Citation | Journal: EMBO J / Year: 2017Title: Nmd3 is a structural mimic of eIF5A, and activates the cpGTPase Lsg1 during 60S ribosome biogenesis. Authors: Andrey G Malyutin / Sharmishtha Musalgaonkar / Stephanie Patchett / Joachim Frank / Arlen W Johnson / ![]() Abstract: During ribosome biogenesis in eukaryotes, nascent subunits are exported to the cytoplasm in a functionally inactive state. 60S subunits are activated through a series of cytoplasmic maturation events. ...During ribosome biogenesis in eukaryotes, nascent subunits are exported to the cytoplasm in a functionally inactive state. 60S subunits are activated through a series of cytoplasmic maturation events. The last known events in the cytoplasm are the release of Tif6 by Efl1 and Sdo1 and the release of the export adapter, Nmd3, by the GTPase Lsg1. Here, we have used cryo-electron microscopy to determine the structure of the 60S subunit bound by Nmd3, Lsg1, and Tif6. We find that a central domain of Nmd3 mimics the translation elongation factor eIF5A, inserting into the E site of the ribosome and pulling the L1 stalk into a closed position. Additional domains occupy the P site and extend toward the sarcin-ricin loop to interact with Tif6. Nmd3 and Lsg1 together embrace helix 69 of the B2a intersubunit bridge, inducing base flipping that we suggest may activate the GTPase activity of Lsg1. | ||||||||||||
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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 | 5t6r.cif.gz | 3.1 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb5t6r.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 5t6r.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 5t6r_validation.pdf.gz | 1.7 MB | Display | wwPDB validaton report |
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| Full document | 5t6r_full_validation.pdf.gz | 1.7 MB | Display | |
| Data in XML | 5t6r_validation.xml.gz | 205.6 KB | Display | |
| Data in CIF | 5t6r_validation.cif.gz | 355.3 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/t6/5t6r ftp://data.pdbj.org/pub/pdb/validation_reports/t6/5t6r | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 8368MC ![]() 8362C ![]() 5t62C C: citing same article ( M: map data used to model this data |
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| Similar structure data |
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Assembly
| Deposited unit | ![]()
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Components
-RNA chain , 3 types, 3 molecules ABC
| #1: RNA chain | Mass: 1097493.875 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #2: RNA chain | Mass: 38951.105 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #3: RNA chain | Mass: 50682.922 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
+60S ribosomal protein ... , 39 types, 39 molecules DEFGHIJKLMNOabcdefghijklmnopqr...
-Protein , 3 types, 3 molecules zSV
| #41: Protein | Mass: 14583.077 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Strain: ATCC 204508 / S288c / References: UniProt: P0CH08 |
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| #44: Protein | Mass: 17889.996 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() Strain: ATCC 204508 / S288c |
| #45: Protein | Mass: 103321.562 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: MBP-TEV-NMD3 Source: (natural) ![]() Strain: ATCC 204508 / S288c / References: UniProt: A0A0F8NYV9, UniProt: P38861 |
-Non-polymers , 3 types, 101 molecules 




| #46: Chemical | ChemComp-MG / #47: Chemical | #48: Water | ChemComp-HOH / | |
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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
| Component | Name: 60S in complex with Nmd3 / Type: RIBOSOME / Entity ID: #1-#45 / Source: MULTIPLE SOURCES |
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| Molecular weight | Units: MEGADALTONS / Experimental value: NO |
| Source (natural) | Organism: ![]() |
| Buffer solution | pH: 7.5 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Specimen support | Details: 10W / Grid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: Made in lab |
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Tecnai F30 / Image courtesy: FEI Company |
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| Microscopy | Model: FEI TECNAI F30 |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 27000 X / Calibrated magnification: 31000 X / Nominal defocus max: 4000 nm / Nominal defocus min: 1500 nm / Cs: 2.26 mm / C2 aperture diameter: 30 µm / Alignment procedure: COMA FREE |
| Specimen holder | Cryogen: NITROGEN / Specimen holder model: OTHER |
| Image recording | Average exposure time: 8 sec. / Electron dose: 40 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
| Image scans | Movie frames/image: 40 / Used frames/image: 1-40 |
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Processing
| Software | Name: REFMAC / Version: 5.8.0088 / Classification: refinement | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 4.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 65650 / Symmetry type: POINT | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Atomic model building | Protocol: OTHER | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Refinement | Resolution: 4.2→4.2 Å / Cor.coef. Fo:Fc: 0.875 / SU B: 80.56 / SU ML: 0.983 Stereochemistry target values: MAXIMUM LIKELIHOOD WITH PHASES Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
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| Solvent computation | Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Displacement parameters | Biso mean: 110.461 Å2
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| Refinement step | Cycle: 1 / Total: 126651 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Refine LS restraints |
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United States, 3items
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