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- PDB-7bt6: Cryo-EM structure of pre-60S ribosome from Saccharomyces cerevisi... -
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Basic information
Entry | Database: PDB / ID: 7bt6 | |||||||||
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Title | Cryo-EM structure of pre-60S ribosome from Saccharomyces cerevisiae rpl4delta63-87 strain at 3.12 Angstroms resolution(state R1) | |||||||||
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![]() | RIBOSOME / Pre-60s / rpl4 | |||||||||
Function / homology | ![]() protein-RNA complex remodeling / regulation of ribosomal subunit export from nucleus / 7S RNA binding / positive regulation of ATP-dependent activity / maturation of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / pre-mRNA 5'-splice site binding / nuclear-transcribed mRNA catabolic process / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of 5.8S rRNA / SRP-dependent cotranslational protein targeting to membrane ...protein-RNA complex remodeling / regulation of ribosomal subunit export from nucleus / 7S RNA binding / positive regulation of ATP-dependent activity / maturation of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / pre-mRNA 5'-splice site binding / nuclear-transcribed mRNA catabolic process / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of 5.8S rRNA / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / ribosomal large subunit binding / 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) / negative regulation of mRNA splicing, via spliceosome / ATPase activator activity / L13a-mediated translational silencing of Ceruloplasmin expression / preribosome, large subunit precursor / ribosomal large subunit export from nucleus / regulation of translational fidelity / protein-RNA complex assembly / ribosomal 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 initiation factor activity / nuclear periphery / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / assembly of large subunit precursor of preribosome / maturation of LSU-rRNA / cytosolic ribosome assembly / ribosomal large subunit biogenesis / maturation of SSU-rRNA / macroautophagy / small-subunit processome / maintenance of translational fidelity / ribosomal large subunit assembly / rRNA processing / ribosome biogenesis / ATPase binding / 5S rRNA binding / large ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / cytoplasmic translation / rRNA binding / negative regulation of translation / ribosome / structural constituent of ribosome / translation / GTPase activity / mRNA binding / nucleolus / GTP binding / RNA binding / nucleoplasm / nucleus / metal ion binding / cytoplasm / cytosol Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.12 Å | |||||||||
![]() | Li, Y. / Wilson, D.M. | |||||||||
Funding support | ![]() ![]()
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![]() | ![]() Title: Structural insights into assembly of the ribosomal nascent polypeptide exit tunnel. Authors: Daniel M Wilson / Yu Li / Amber LaPeruta / Michael Gamalinda / Ning Gao / John L Woolford / ![]() ![]() ![]() Abstract: The nascent polypeptide exit tunnel (NPET) is a major functional center of 60S ribosomal subunits. However, little is known about how the NPET is constructed during ribosome assembly. We utilized ...The nascent polypeptide exit tunnel (NPET) is a major functional center of 60S ribosomal subunits. However, little is known about how the NPET is constructed during ribosome assembly. We utilized molecular genetics, biochemistry, and cryo-electron microscopy (cryo-EM) to investigate the functions of two NPET-associated proteins, ribosomal protein uL4 and assembly factor Nog1, in NPET assembly. Structures of mutant pre-ribosomes lacking the tunnel domain of uL4 reveal a misassembled NPET, including an aberrantly flexible ribosomal RNA helix 74, resulting in at least three different blocks in 60S assembly. Structures of pre-ribosomes lacking the C-terminal extension of Nog1 demonstrate that this extension scaffolds the tunnel domain of uL4 in the NPET to help maintain stability in the core of pre-60S subunits. Our data reveal that uL4 and Nog1 work together in the maturation of ribosomal RNA helix 74, which is required to ensure proper construction of the NPET and 60S ribosomal subunits. | |||||||||
History |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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PDBx/mmCIF format | ![]() | 2.9 MB | Display | ![]() |
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PDB format | ![]() | Display | ![]() | |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Summary document | ![]() | 1.4 MB | Display | ![]() |
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Full document | ![]() | 1.5 MB | Display | |
Data in XML | ![]() | 221 KB | Display | |
Data in CIF | ![]() | 384.2 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 30170MC ![]() 7btbC 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
+60S ribosomal protein ... , 34 types, 34 molecules ABCDEFGHJLMNOPQRSTUVXYZacdefgh...
-Ribosome assembly ... , 2 types, 2 molecules Wx
#21: Protein | Mass: 27098.012 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() ![]() References: UniProt: P33201 |
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#42: Protein | Mass: 57106.781 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() ![]() References: UniProt: P25382 |
-Nucleolar GTP-binding protein ... , 2 types, 2 molecules bm
#26: Protein | Mass: 74531.227 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() ![]() References: UniProt: Q02892 |
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#36: Protein | Mass: 55585.590 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() ![]() References: UniProt: P53742 |
-Ribosome biogenesis protein ... , 3 types, 3 molecules ruv
#38: Protein | Mass: 29786.783 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() ![]() References: UniProt: P40078 |
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#39: Protein | Mass: 24027.650 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() ![]() References: UniProt: Q07915 |
#40: Protein | Mass: 39665.789 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() ![]() References: UniProt: P36160 |
-Protein , 3 types, 3 molecules wyz
#41: Protein | Mass: 23001.410 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() ![]() References: UniProt: Q08746 |
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#43: Protein | Mass: 26476.605 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() ![]() References: UniProt: Q12522 |
#44: Protein | Mass: 12435.429 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() ![]() References: UniProt: P38202 |
-RNA chain , 3 types, 3 molecules 123
#45: RNA chain | Mass: 1097493.875 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() ![]() References: GenBank: NR_132207 |
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#46: RNA chain | Mass: 50682.922 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() ![]() References: GenBank: 1669301378 |
#47: RNA chain | Mass: 38951.105 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) ![]() ![]() References: GenBank: 1039023795 |
-Non-polymers , 3 types, 7 molecules ![](data/chem/img/GTP.gif)
![](data/chem/img/MG.gif)
![](data/chem/img/ZN.gif)
![](data/chem/img/MG.gif)
![](data/chem/img/ZN.gif)
#48: Chemical | #49: Chemical | #50: Chemical | |
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-Details
Has ligand of interest | N |
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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: Eukaryotic pre-60S ribosomal subunits from Saccharomyces cerevisiae rpl4delta63-87 strain(stateR1) Type: RIBOSOME / Entity ID: #1-#47 / Source: NATURAL |
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Source (natural) | Organism: ![]() ![]() |
Buffer solution | pH: 7.5 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
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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: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 1.9 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3D reconstruction | Resolution: 3.12 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 103319 / Symmetry type: POINT |