[English] 日本語
Yorodumi- PDB-6wdr: Subunit joining exposes nascent pre-40S rRNA for processing and q... -
+Open data
-Basic information
Entry | Database: PDB / ID: 6wdr | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Title | Subunit joining exposes nascent pre-40S rRNA for processing and quality control | ||||||||||||
Components |
| ||||||||||||
Keywords | RIBOSOME / 80S-like / Tsr1 / Structural heterogeneity | ||||||||||||
Function / homology | Function and homology information endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / negative regulation of glucose mediated signaling pathway / negative regulation of translational frameshifting / RMTs methylate histone arginines / positive regulation of translational fidelity / Protein methylation / mTORC1-mediated signalling / Protein hydroxylation / ribosome-associated ubiquitin-dependent protein catabolic process ...endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / negative regulation of glucose mediated signaling pathway / negative regulation of translational frameshifting / RMTs methylate histone arginines / positive regulation of translational fidelity / Protein methylation / mTORC1-mediated signalling / Protein hydroxylation / ribosome-associated ubiquitin-dependent protein catabolic process / U3 snoRNA binding / GDP-dissociation inhibitor activity / nonfunctional rRNA decay / positive regulation of nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / Formation of the ternary complex, and subsequently, the 43S complex / Translation initiation complex formation / preribosome, small subunit precursor / Ribosomal scanning and start codon recognition / Major pathway of rRNA processing in the nucleolus and cytosol / mRNA destabilization / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / Formation of a pool of free 40S subunits / regulation of amino acid metabolic process / L13a-mediated translational silencing of Ceruloplasmin expression / 90S preribosome / G-protein alpha-subunit binding / positive regulation of protein kinase activity / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / regulation of translational fidelity / ribonucleoprotein complex binding / ribosomal subunit export from nucleus / ribosomal small subunit export from nucleus / translation regulator activity / 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) / DNA-(apurinic or apyrimidinic site) endonuclease activity / cellular response to amino acid starvation / rescue of stalled ribosome / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA / small-subunit processome / translational initiation / protein kinase C binding / maintenance of translational fidelity / modification-dependent protein catabolic process / cytoplasmic stress granule / protein tag activity / rRNA processing / ribosomal small subunit biogenesis / small ribosomal subunit rRNA binding / ribosome biogenesis / ribosome binding / ribosomal small subunit assembly / small ribosomal subunit / cytosolic small ribosomal subunit / cytoplasmic translation / negative regulation of translation / rRNA binding / ribosome / protein ubiquitination / structural constituent of ribosome / positive regulation of protein phosphorylation / G protein-coupled receptor signaling pathway / translation / negative regulation of gene expression / GTPase activity / mRNA binding / ubiquitin protein ligase binding / GTP binding / nucleolus / mitochondrion / RNA binding / zinc ion binding / nucleoplasm / nucleus / metal ion binding / cytosol / cytoplasm Similarity search - Function | ||||||||||||
Biological species | Saccharomyces cerevisiae (brewer's yeast) Saccharomyces cerevisiae S288C (yeast) | ||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.7 Å | ||||||||||||
Authors | Rai, J. / Parker, M.D. / Huang, H. / Choy, S. / Ghalei, H. / Johnson, M.C. / Karbstein, K. / Stroupe, M.E. | ||||||||||||
Funding support | United States, 3items
| ||||||||||||
Citation | Journal: RNA / Year: 2021 Title: An open interface in the pre-80S ribosome coordinated by ribosome assembly factors Tsr1 and Dim1 enables temporal regulation of Fap7. Authors: Jay Rai / Melissa D Parker / Haina Huang / Stefan Choy / Homa Ghalei / Matthew C Johnson / Katrin Karbstein / M Elizabeth Stroupe / Abstract: During their maturation, nascent 40S subunits enter a translation-like quality control cycle, where they are joined by mature 60S subunits to form 80S-like ribosomes. While these assembly ...During their maturation, nascent 40S subunits enter a translation-like quality control cycle, where they are joined by mature 60S subunits to form 80S-like ribosomes. While these assembly intermediates are essential for maturation and quality control, how they form, and how their structure promotes quality control, remains unknown. To address these questions, we determined the structure of an 80S-like ribosome assembly intermediate to an overall resolution of 3.4 Å. The structure, validated by biochemical data, resolves a large body of previously paradoxical data and illustrates how assembly and translation factors cooperate to promote the formation of an interface that lacks many mature subunit contacts but is stabilized by the universally conserved methyltransferase Dim1. We also show how Tsr1 enables this interface by blocking the canonical binding of eIF5B to 40S subunits, while maintaining its binding to 60S. The structure also shows how this interface leads to unfolding of the platform, which allows for temporal regulation of the ATPase Fap7, thus linking 40S maturation to quality control during ribosome assembly. | ||||||||||||
History |
|
-Structure visualization
Movie |
Movie viewer |
---|---|
Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 6wdr.cif.gz | 1.6 MB | Display | PDBx/mmCIF format |
---|---|---|---|---|
PDB format | pdb6wdr.ent.gz | 1.3 MB | Display | PDB format |
PDBx/mmJSON format | 6wdr.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 6wdr_validation.pdf.gz | 978.3 KB | Display | wwPDB validaton report |
---|---|---|---|---|
Full document | 6wdr_full_validation.pdf.gz | 1.1 MB | Display | |
Data in XML | 6wdr_validation.xml.gz | 147.8 KB | Display | |
Data in CIF | 6wdr_validation.cif.gz | 251.2 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/wd/6wdr ftp://data.pdbj.org/pub/pdb/validation_reports/wd/6wdr | HTTPS FTP |
-Related structure data
Related structure data | 21644MC 6oigC C: citing same article (ref.) M: map data used to model this data |
---|---|
Similar structure data |
-Links
-Assembly
Deposited unit |
|
---|---|
1 |
|
-Components
+40S ribosomal protein ... , 28 types, 28 molecules ACDEFGHIJKLMNPQRSTUVWXYZbcde
-Protein , 3 types, 3 molecules fgk
#29: Protein | Mass: 8101.675 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast) Strain: ATCC 204508 / S288c / Gene: RPS31, RPS37, UBI3, YLR167W, L9470.14 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P05759 |
---|---|
#30: Protein | Mass: 34638.945 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast) Strain: ATCC 204508 / S288c / Gene: ASC1, CPC2, YMR116C, YM9718.15C / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P38011 |
#31: Protein | Mass: 90876.539 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast) Strain: ATCC 204508 / S288c / Gene: TSR1, YDL060W / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: Q07381 |
-RNA chain , 1 types, 1 molecules 2
#32: RNA chain | Mass: 614942.125 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c / Production host: Saccharomyces cerevisiae (brewer's yeast) |
---|
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
---|---|
EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: 80S-like ribosome / Type: RIBOSOME / Entity ID: #1-#4, #6-#32 / Source: RECOMBINANT |
---|---|
Molecular weight | Experimental value: NO |
Source (natural) | Organism: Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast) |
Source (recombinant) | Organism: Saccharomyces cerevisiae (brewer's yeast) |
Buffer solution | pH: 6.8 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Details: unspecified |
Vitrification | Cryogen name: ETHANE |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
---|---|
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 | Electron dose: 25 e/Å2 / Film or detector model: DIRECT ELECTRON DE-64 (8k x 8k) |
-Processing
Software | Name: PHENIX / Version: 1.14_3260: / Classification: refinement | |||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Image processing |
| |||||||||||||||||||||
CTF correction |
| |||||||||||||||||||||
3D reconstruction |
| |||||||||||||||||||||
Atomic model building | Space: REAL | |||||||||||||||||||||
Refinement | Highest resolution: 3.7 Å |