[English] 日本語
Yorodumi- PDB-6y7c: Early cytoplasmic yeast pre-40S particle (purified with Tsr1 as bait) -
+Open data
-Basic information
Entry | Database: PDB / ID: 6y7c | ||||||
---|---|---|---|---|---|---|---|
Title | Early cytoplasmic yeast pre-40S particle (purified with Tsr1 as bait) | ||||||
Components |
| ||||||
Keywords | RIBOSOME / yeast pre-ribosomal particle - small ribosomal subunit | ||||||
Function / homology | Function and homology information positive regulation of RNA import into nucleus / Ragulator complex / ATP export / endonucleolytic cleavage to generate mature 5'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / endocytic recycling / Protein methylation / RMTs methylate histone arginines / positive regulation of translational fidelity / mTORC1-mediated signalling ...positive regulation of RNA import into nucleus / Ragulator complex / ATP export / endonucleolytic cleavage to generate mature 5'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / endocytic recycling / Protein methylation / RMTs methylate histone arginines / positive regulation of translational fidelity / mTORC1-mediated signalling / Protein hydroxylation / U3 snoRNA binding / : / poly(A)+ mRNA export from nucleus / positive regulation of nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / response to osmotic stress / Formation of the ternary complex, and subsequently, the 43S complex / Translation initiation complex formation / Ribosomal scanning and start codon recognition / preribosome, small subunit precursor / snoRNA binding / Major pathway of rRNA processing in the nucleolus and cytosol / SRP-dependent cotranslational protein targeting to membrane / 90S preribosome / GTP hydrolysis and joining of the 60S ribosomal subunit / Formation of a pool of free 40S subunits / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / ribosomal small subunit export from nucleus / L13a-mediated translational silencing of Ceruloplasmin expression / proteasome assembly / 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) / regulation of translational fidelity / ribonucleoprotein complex binding / maturation of SSU-rRNA / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / small-subunit processome / maintenance of translational fidelity / ribosomal small subunit biogenesis / small ribosomal subunit rRNA binding / rRNA processing / ribosomal small subunit assembly / cytoplasmic stress granule / cytosolic small ribosomal subunit / unfolded protein binding / protein transport / late endosome / ribosome biogenesis / cellular response to oxidative stress / late endosome membrane / small ribosomal subunit / cytoplasmic translation / rRNA binding / non-specific serine/threonine protein kinase / ribosome / structural constituent of ribosome / protein kinase activity / translation / phosphorylation / protein serine kinase activity / mRNA binding / GTPase activity / protein serine/threonine kinase activity / GTP binding / nucleolus / mitochondrion / RNA binding / zinc ion binding / nucleoplasm / ATP binding / metal ion binding / nucleus / cytosol / cytoplasm Similarity search - Function | ||||||
Biological species | Saccharomyces cerevisiae (brewer's yeast) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.8 Å | ||||||
Authors | Shayan, R. / Plassart, L. / Plisson-Chastang, C. | ||||||
Funding support | France, 1items
| ||||||
Citation | Journal: Molecules / Year: 2020 Title: Good Vibrations: Structural Remodeling of Maturing Yeast Pre-40S Ribosomal Particles Followed by Cryo-Electron Microscopy. Authors: Ramtin Shayan / Dana Rinaldi / Natacha Larburu / Laura Plassart / Stéphanie Balor / David Bouyssié / Simon Lebaron / Julien Marcoux / Pierre-Emmanuel Gleizes / Célia Plisson-Chastang / Abstract: Assembly of eukaryotic ribosomal subunits is a very complex and sequential process that starts in the nucleolus and finishes in the cytoplasm with the formation of functional ribosomes. Over the past ...Assembly of eukaryotic ribosomal subunits is a very complex and sequential process that starts in the nucleolus and finishes in the cytoplasm with the formation of functional ribosomes. Over the past few years, characterization of the many molecular events underlying eukaryotic ribosome biogenesis has been drastically improved by the "resolution revolution" of cryo-electron microscopy (cryo-EM). However, if very early maturation events have been well characterized for both yeast ribosomal subunits, little is known regarding the final maturation steps occurring to the small (40S) ribosomal subunit. To try to bridge this gap, we have used proteomics together with cryo-EM and single particle analysis to characterize yeast pre-40S particles containing the ribosome biogenesis factor Tsr1. Our analyses lead us to refine the timing of the early pre-40S particle maturation steps. Furthermore, we suggest that after an early and structurally stable stage, the beak and platform domains of pre-40S particles enter a "vibrating" or "wriggling" stage, that might be involved in the final maturation of 18S rRNA as well as the fitting of late ribosomal proteins into their mature position. | ||||||
History |
|
-Structure visualization
Movie |
Movie viewer |
---|---|
Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 6y7c.cif.gz | 1.7 MB | Display | PDBx/mmCIF format |
---|---|---|---|---|
PDB format | pdb6y7c.ent.gz | 1.4 MB | Display | PDB format |
PDBx/mmJSON format | 6y7c.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/y7/6y7c ftp://data.pdbj.org/pub/pdb/validation_reports/y7/6y7c | HTTPS FTP |
---|
-Related structure data
Related structure data | 10713MC M: map data used to model this data C: citing same article (ref.) |
---|---|
Similar structure data |
-Links
-Assembly
Deposited unit |
|
---|---|
1 |
|
-Components
-RNA chain , 1 types, 1 molecules 2
#1: RNA chain | Mass: 558895.688 Da / Num. of mol.: 1 / Source method: isolated from a natural source Details: Ribose 2'-O methylation on adenosins A100, A420,A436, A796 Source: (natural) Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast) |
---|
+40S ribosomal protein ... , 28 types, 28 molecules ABCEFGHIJLMNOPQRSTUVWXYZbcde
-Protein , 5 types, 5 molecules hijlt
#30: Protein | Mass: 30380.623 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast) References: UniProt: Q99216 |
---|---|
#31: Protein | Mass: 55207.422 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast) References: UniProt: P38333 |
#32: Protein | Mass: 53463.254 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast) References: UniProt: P34078 |
#33: Protein | Mass: 49192.852 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast) References: UniProt: P40160, non-specific serine/threonine protein kinase |
#34: Protein | Mass: 90876.539 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast) References: UniProt: Q07381 |
-Details
Has ligand of interest | N |
---|
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
---|---|
EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: early cytoplasmic yeast pre-40S particle (purified using Tsr1 as bait) Type: RIBOSOME / Entity ID: all / Source: NATURAL |
---|---|
Molecular weight | Value: 1.8 MDa / Experimental value: NO |
Source (natural) | Organism: Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast) |
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: 300 divisions/in. / Grid type: Quantifoil R2/1 |
Vitrification | Instrument: LEICA EM GP / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 292 K |
-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 FIELDBright-field microscopy |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Electron dose: 29.4 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
-Processing
Software | Name: PHENIX / Version: 1.12_2829: / Classification: refinement | ||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EM software |
| ||||||||||||||||||||||||||||||||
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 19564 / Algorithm: EXACT BACK PROJECTION / Num. of class averages: 1 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||
Atomic model building | Protocol: OTHER | ||||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 6FAI | ||||||||||||||||||||||||||||||||
Refine LS restraints |
|