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- PDB-6q8y: Cryo-EM structure of the mRNA translating and degrading yeast 80S... -
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Open data
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Basic information
Entry | Database: PDB / ID: 6q8y | |||||||||
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Title | Cryo-EM structure of the mRNA translating and degrading yeast 80S ribosome-Xrn1 nuclease complex | |||||||||
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![]() | TRANSLATION / ribosome / stalling / nuclease / exoribonuclease / Xrn1 | |||||||||
Function / homology | ![]() nuclear-transcribed mRNA catabolic process, 5'-3' exonucleolytic nonsense-mediated decay / eisosome membrane domain/MCC / sno(s)RNA processing / nuclear-transcribed mRNA catabolic process, no-go decay / karyogamy / NAD-cap decapping / eukaryotic initiation factor 4G binding / 5'-3' RNA exonuclease activity / tRNA decay / rRNA catabolic process ...nuclear-transcribed mRNA catabolic process, 5'-3' exonucleolytic nonsense-mediated decay / eisosome membrane domain/MCC / sno(s)RNA processing / nuclear-transcribed mRNA catabolic process, no-go decay / karyogamy / NAD-cap decapping / eukaryotic initiation factor 4G binding / 5'-3' RNA exonuclease activity / tRNA decay / rRNA catabolic process / traversing start control point of mitotic cell cycle / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / Negative regulators of DDX58/IFIH1 signaling / negative regulation of glucose mediated signaling pathway / positive regulation of translational fidelity / RMTs methylate histone arginines / Protein methylation / mTORC1-mediated signalling / Protein hydroxylation / regulation of telomere maintenance / cellular response to nitrogen starvation / ribosome-associated ubiquitin-dependent protein catabolic process / GDP-dissociation inhibitor activity / nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / positive regulation of nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / pre-mRNA 5'-splice site binding / Formation of the ternary complex, and subsequently, the 43S complex / Translation initiation complex formation / preribosome, small subunit precursor / Ribosomal scanning and start codon recognition / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / nonfunctional rRNA decay / negative regulation of macroautophagy / response to cycloheximide / Major pathway of rRNA processing in the nucleolus and cytosol / mRNA destabilization / negative regulation of translational frameshifting / 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) / negative regulation of mRNA splicing, via spliceosome / Formation of a pool of free 40S subunits / preribosome, large subunit precursor / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / nuclear-transcribed mRNA catabolic process / L13a-mediated translational silencing of Ceruloplasmin expression / translational elongation / regulation of amino acid metabolic process / ribosomal large subunit export from nucleus / positive regulation of protein kinase activity / G-protein alpha-subunit binding / positive regulation of transcription initiation by RNA polymerase II / 90S preribosome / Ub-specific processing proteases / 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) / protein-RNA complex assembly / regulation of translational fidelity / ribosomal subunit export from nucleus / maturation of LSU-rRNA / translational termination / ribosomal small subunit export from nucleus / translation regulator activity / rescue of stalled ribosome / DNA-(apurinic or apyrimidinic site) endonuclease activity / cellular response to amino acid starvation / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosomal large subunit biogenesis / ribosome assembly / protein kinase C binding / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA / positive regulation of transcription elongation by RNA polymerase II / small-subunit processome / translational initiation / macroautophagy / P-body / maintenance of translational fidelity / modification-dependent protein catabolic process / protein tag activity / rRNA processing / cytoplasmic stress granule / ribosome biogenesis / ribosome binding / Hydrolases; Acting on ester bonds; Exoribonucleases producing 5'-phosphomonoesters / ribosomal small subunit assembly / ribosomal small subunit biogenesis / small ribosomal subunit / small ribosomal subunit rRNA binding / 5S rRNA binding / ribosomal large subunit assembly / cytosolic small ribosomal subunit / large ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / microtubule / cytoplasmic translation / negative regulation of translation / rRNA binding / protein ubiquitination / ribosome Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å | |||||||||
![]() | Tesina, P. / Heckel, E. / Cheng, J. / Buschauer, R. / Kater, L. / Berninghausen, O. / Becker, T. / Beckmann, R. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structure of the 80S ribosome-Xrn1 nuclease complex. Authors: Petr Tesina / Elisabeth Heckel / Jingdong Cheng / Micheline Fromont-Racine / Robert Buschauer / Lukas Kater / Birgitta Beatrix / Otto Berninghausen / Alain Jacquier / Thomas Becker / Roland Beckmann / ![]() ![]() Abstract: Messenger RNA (mRNA) homeostasis represents an essential part of gene expression, in which the generation of mRNA by RNA polymerase is counter-balanced by its degradation by nucleases. The conserved ...Messenger RNA (mRNA) homeostasis represents an essential part of gene expression, in which the generation of mRNA by RNA polymerase is counter-balanced by its degradation by nucleases. The conserved 5'-to-3' exoribonuclease Xrn1 has a crucial role in eukaryotic mRNA homeostasis by degrading decapped or cleaved mRNAs post-translationally and, more surprisingly, also co-translationally. Here we report that active Xrn1 can directly and specifically interact with the translation machinery. A cryo-electron microscopy structure of a programmed Saccharomyces cerevisiae 80S ribosome-Xrn1 nuclease complex reveals how the conserved core of Xrn1 enables binding at the mRNA exit site of the ribosome. This interface provides a conduit for channelling of the mRNA from the ribosomal decoding site directly into the active center of the nuclease, thus separating mRNA decoding from degradation by only 17 ± 1 nucleotides. These findings explain how rapid 5'-to-3' mRNA degradation is coupled efficiently to its final round of mRNA translation. | |||||||||
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 4.5 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 | ![]() | 344.8 KB | Display | |
Data in CIF | ![]() | 602.8 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 4474MC 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
-RNA chain , 7 types, 7 molecules 2lnmBQBRBS
#1: RNA chain | Mass: 578836.375 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#34: RNA chain | Mass: 5490.350 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Production host: ![]() ![]() |
#35: RNA chain | Mass: 24468.551 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#36: RNA chain | Mass: 24004.262 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#54: RNA chain | Mass: 1097493.875 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#55: RNA chain | Mass: 38951.105 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#56: RNA chain | Mass: 50682.922 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
+60S ribosomal protein ... , 40 types, 40 molecules AAABACADAEAFAGAHAIAJAKALAMANAPAQARASATAUAVAWAXAYBABBBCBDBEBF...
-Protein , 5 types, 5 molecules AOzBNO
#16: Protein | Mass: 6032.321 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#33: Protein | Mass: 107653.734 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() References: UniProt: P22147, Hydrolases; Acting on ester bonds; Exoribonucleases producing 5'-phosphomonoesters |
#58: Protein | Mass: 22908.338 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#69: Protein | Mass: 5704.610 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#70: Protein | Mass: 34710.023 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
+40S ribosomal protein ... , 30 types, 30 molecules abcdefgACDEFGHJKLMPQRSTUVWXYZI
-Non-polymers , 2 types, 10 molecules 


#83: Chemical | ChemComp-ZN / #84: Chemical | |
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-Details
Has protein modification | 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: 7.5 | ||||||||||||||||||||||||||||||||||||||||||
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: 2.5 e/Å2 / Film or detector model: FEI FALCON II (4k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.14_3260: / Classification: refinement |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
3D reconstruction | Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 217000 / Symmetry type: POINT |