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Open data
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Basic information
| Entry | Database: PDB / ID: 9g8m | ||||||||||||||||||
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| Title | human 80S ribosome bound by a SKI2-exosome complex | ||||||||||||||||||
Components |
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Keywords | RIBOSOME / RNase / Helicase / RNA-binding / mRNA-degradation / cytoplasm | ||||||||||||||||||
| Function / homology | Function and homology informationDNA deamination / exoribonuclease II / exoribonuclease II activity / Dom34-Hbs1 complex / exosome (RNase complex) / nuclear-transcribed mRNA catabolic process, no-go decay / CUT catabolic process / U1 snRNA 3'-end processing / Ski complex / U5 snRNA 3'-end processing ...DNA deamination / exoribonuclease II / exoribonuclease II activity / Dom34-Hbs1 complex / exosome (RNase complex) / nuclear-transcribed mRNA catabolic process, no-go decay / CUT catabolic process / U1 snRNA 3'-end processing / Ski complex / U5 snRNA 3'-end processing / cytoplasmic exosome (RNase complex) / TRAMP-dependent tRNA surveillance pathway / mRNA decay by 3' to 5' exoribonuclease / U4 snRNA 3'-end processing / nuclear polyadenylation-dependent rRNA catabolic process / poly(A)-dependent snoRNA 3'-end processing / nuclear exosome (RNase complex) / nuclear-transcribed mRNA catabolic process, 3'-5' exonucleolytic nonsense-mediated decay / nuclear-transcribed mRNA catabolic process, non-stop decay / Tristetraprolin (TTP, ZFP36) binds and destabilizes mRNA / exonucleolytic trimming to generate mature 3'-end of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ATF4 activates genes in response to endoplasmic reticulum stress / Butyrate Response Factor 1 (BRF1) binds and destabilizes mRNA / histone mRNA catabolic process / 3'-5' RNA helicase activity / nuclear mRNA surveillance / rRNA catabolic process / Nuclear RNA decay / 7S RNA binding / isotype switching / translation at presynapse / mRNA 3'-UTR AU-rich region binding / response to insecticide / regulation of translation involved in cellular response to UV / eukaryotic 80S initiation complex / ribosome disassembly / ribosomal protein import into nucleus / negative regulation of endoplasmic reticulum unfolded protein response / regulation of G1 to G0 transition / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / RNA catabolic process / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / protein-DNA complex disassembly / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / positive regulation of respiratory burst involved in inflammatory response / positive regulation of gastrulation / protein tyrosine kinase inhibitor activity / IRE1-RACK1-PP2A complex / positive regulation of Golgi to plasma membrane protein transport / nucleolus organization / TNFR1-mediated ceramide production / negative regulation of formation of translation preinitiation complex / KSRP (KHSRP) binds and destabilizes mRNA / positive regulation of DNA damage response, signal transduction by p53 class mediator / positive regulation of ubiquitin-protein transferase activity / GAIT complex / positive regulation of DNA-templated transcription initiation / negative regulation of RNA splicing / maturation of 5.8S rRNA / negative regulation of DNA repair / TORC2 complex binding / G1 to G0 transition / Enterobacterial factors antagonize host defense / PD-L1(CD274) glycosylation and translocation to plasma membrane / erythrocyte homeostasis / supercoiled DNA binding / regulation of establishment of cell polarity / cysteine-type endopeptidase activator activity involved in apoptotic process / oxidized purine DNA binding / NF-kappaB complex / cytoplasmic translational initiation / rRNA modification in the nucleus and cytosol / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / negative regulation of phagocytosis / negative regulation of bicellular tight junction assembly / ubiquitin-like protein conjugating enzyme binding / cytoplasmic side of rough endoplasmic reticulum membrane / nuclear chromosome / Formation of the ternary complex, and subsequently, the 43S complex / mRNA catabolic process / laminin receptor activity / negative regulation of myoblast fusion / ion channel inhibitor activity / Association of TriC/CCT with target proteins during biosynthesis / protein kinase A binding / positive regulation of mitochondrial depolarization / Ribosomal scanning and start codon recognition / PELO:HBS1L and ABCE1 dissociate a ribosome on a non-stop mRNA / male meiosis I / Translation initiation complex formation / Dengue Virus Genome Translation and Replication / Maturation of DENV proteins / negative regulation of Wnt signaling pathway / fibroblast growth factor binding / ZNF598 and the Ribosome-associated Quality Trigger (RQT) complex dissociate a ribosome stalled on a no-go mRNA / Protein hydroxylation / TOR signaling / BH3 domain binding Similarity search - Function | ||||||||||||||||||
| Biological species | Homo sapiens (human) Cricket paralysis virus | ||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.3 Å | ||||||||||||||||||
Authors | Koegel, A. / Keidel, A. / Loukeri, M.J. / Kuhn, C.C. / Langer, L.M. / Schaefer, I.B. / Conti, E. | ||||||||||||||||||
| Funding support | Germany, European Union, Denmark, 5items
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Citation | Journal: Nature / Year: 2024Title: Structural basis of mRNA decay by the human exosome-ribosome supercomplex. Authors: Alexander Kögel / Achim Keidel / Matina-Jasemi Loukeri / Christopher C Kuhn / Lukas M Langer / Ingmar B Schäfer / Elena Conti / ![]() Abstract: The interplay between translation and mRNA decay is widespread in human cells. In quality-control pathways, exonucleolytic degradation of mRNA associated with translating ribosomes is mediated ...The interplay between translation and mRNA decay is widespread in human cells. In quality-control pathways, exonucleolytic degradation of mRNA associated with translating ribosomes is mediated largely by the cytoplasmic exosome, which includes the exoribonuclease complex EXO10 and the helicase complex SKI238 (refs. ). The helicase can extract mRNA from the ribosome and is expected to transfer it to the exoribonuclease core through a bridging factor, HBS1L3 (also known as SKI7), but the mechanisms of this molecular handover remain unclear. Here we reveal how human EXO10 is recruited by HBS1L3 (SKI7) to an active ribosome-bound SKI238 complex. We show that rather than a sequential handover, a direct physical coupling mechanism takes place, which culminates in the formation of a cytoplasmic exosome-ribosome supercomplex. Capturing the structure during active decay reveals a continuous path in which an RNA substrate threads from the 80S ribosome through the SKI2 helicase into the exoribonuclease active site of the cytoplasmic exosome complex. The SKI3 subunit of the complex directly binds to HBS1L3 (SKI7) and also engages a surface of the 40S subunit, establishing a recognition platform in collided disomes. Exosome and ribosome thus work together as a single structural and functional unit in co-translational mRNA decay, coordinating their activities in a transient supercomplex. | ||||||||||||||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 9g8m.cif.gz | 6.2 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb9g8m.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 9g8m.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/g8/9g8m ftp://data.pdbj.org/pub/pdb/validation_reports/g8/9g8m | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 51132MC ![]() 9g8nC ![]() 9g8oC ![]() 9g8pC ![]() 9g8qC ![]() 9g8rC M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
-Protein , 7 types, 7 molecules AEMSfSgLILm
| #1: Protein | Mass: 137913.688 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: SKIV2L, DDX13, SKI2W, SKIV2, W / Production host: ![]() References: UniProt: Q15477, Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement |
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| #11: Protein | Mass: 30196.131 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: HBS1L, HBS1, KIAA1038 / Production host: ![]() References: UniProt: Q9Y450, Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement |
| #12: Protein | Mass: 125229.984 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: DIS3L, DIS3L1, KIAA1955 / Production host: ![]() |
| #35: Protein | Mass: 18004.041 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62979 |
| #36: Protein | Mass: 35115.652 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P63244 |
| #59: Protein | Mass: 24570.949 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q96L21 |
| #88: Protein | Mass: 14758.394 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62987 |
-Exosome complex component ... , 9 types, 9 molecules LNOFGHIJK
| #2: Protein | Mass: 26416.996 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: EXOSC4, RRP41, SKI6 / Production host: ![]() |
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| #3: Protein | Mass: 30429.893 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: EXOSC8, OIP2, RRP43 / Production host: ![]() |
| #4: Protein | Mass: 25636.312 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: EXOSC5, CML28, RRP46 / Production host: ![]() |
| #5: Protein | Mass: 32216.762 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: EXOSC7, KIAA0116, RRP42 / Production host: ![]() |
| #6: Protein | Mass: 28267.127 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: EXOSC6, MTR3 / Production host: ![]() |
| #7: Protein | Mass: 39512.484 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: EXOSC3, RRP40, CGI-102, EXOSC6, MTR3 / Production host: ![]() |
| #8: Protein | Mass: 33190.355 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: EXOSC2, RRP4 / Production host: ![]() |
| #9: Protein | Mass: 21835.100 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: EXOSC1, CSL4, CGI-108 / Production host: ![]() |
| #10: Protein | Mass: 49370.312 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: EXOSC9, PMSCL1 / Production host: ![]() |
-RNA chain , 5 types, 5 molecules XS2L5L7L8
| #13: RNA chain | Mass: 78988.750 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Cricket paralysis virus |
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| #14: RNA chain | Mass: 602752.875 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) |
| #48: RNA chain | Mass: 1638937.000 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) |
| #49: RNA chain | Mass: 38998.078 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: GenBank: 23898 |
| #50: RNA chain | Mass: 50449.812 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: GenBank: 555853 |
+40S ribosomal protein ... , 31 types, 31 molecules SASBSDSESFSHSISKSLSPSQSRSSSTSUSVSXSaScSdSCSGSJSMSNSOSWSYSZSbSe
+60S ribosomal protein ... , 38 types, 38 molecules LALBLCLDLGLHLJLLLMLNLOLPLQLRLSLTLULVLWLXLYLZLaLbLcLdLeLfLgLh...
-Large ribosomal subunit protein ... , 2 types, 2 molecules LELF
| #55: Protein | Mass: 32810.176 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q02878 |
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| #56: Protein | Mass: 29290.973 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P18124 |
-Non-polymers , 2 types, 238 molecules 


| #93: Chemical | ChemComp-MG / #94: Chemical | ChemComp-ZN / |
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-Details
| Has ligand of interest | Y |
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| Has protein modification | Y |
-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: human 80S ribosome bound by a SKI2-exosome complex / Type: RIBOSOME / Entity ID: #1-#92 / Source: MULTIPLE SOURCES |
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| Molecular weight | Experimental value: NO |
| Source (natural) | Organism: Homo sapiens (human) |
| Buffer solution | pH: 7.5 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Specimen support | Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R2/1 |
| Vitrification | Cryogen name: ETHANE-PROPANE |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: TFS KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2400 nm / Nominal defocus min: 600 nm |
| Image recording | Electron dose: 64.2 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of real images: 48004 |
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Processing
| EM software | Name: PHENIX / Version: 1.20.1_4487: / Category: model refinement | ||||||||||||||||||||||||
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3D reconstruction | Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 79353 / Symmetry type: POINT | ||||||||||||||||||||||||
| Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
| Displacement parameters | Biso mean: 172.8 Å2 | ||||||||||||||||||||||||
| Refine LS restraints |
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About Yorodumi




Homo sapiens (human)
Cricket paralysis virus
Germany, European Union,
Denmark, 5items
Citation











PDBj




























































FIELD EMISSION GUN