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Open data
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Basic information
| Entry | Database: PDB / ID: 9g8o | ||||||||||||||||||
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| Title | human 40S ribosome bound by a SKI238-exosome complex | ||||||||||||||||||
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Keywords | RIBOSOME / RNA-binding / RNA-degradation / cytoplasm / helicase | ||||||||||||||||||
| Function / homology | Function and homology informationDNA deamination / nucleolar exosome (RNase complex) / exoribonuclease II activity / exoribonuclease II / Dom34-Hbs1 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 / nucleolar exosome (RNase complex) / exoribonuclease II activity / exoribonuclease II / Dom34-Hbs1 complex / nuclear-transcribed mRNA catabolic process, no-go decay / CUT catabolic process / U1 snRNA 3'-end processing / Ski complex / U5 snRNA 3'-end processing / TRAMP-dependent tRNA surveillance pathway / exosome (RNase complex) / mRNA decay by 3' to 5' exoribonuclease / cytoplasmic exosome (RNase complex) / U4 snRNA 3'-end processing / nuclear polyadenylation-dependent rRNA catabolic process / poly(A)-dependent snoRNA 3'-end processing / Cdc73/Paf1 complex / nuclear-transcribed mRNA catabolic process, 3'-5' exonucleolytic nonsense-mediated decay / nuclear exosome (RNase complex) / exonucleolytic trimming to generate mature 3'-end of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Tristetraprolin (TTP, ZFP36) binds and destabilizes mRNA / negative regulation of myeloid cell differentiation / ATF4 activates genes in response to endoplasmic reticulum stress / Butyrate Response Factor 1 (BRF1) binds and destabilizes mRNA / 3'-5' RNA helicase activity / positive regulation of isotype switching / histone mRNA catabolic process / nuclear mRNA surveillance / rRNA catabolic process / 7S RNA binding / mRNA 3'-UTR AU-rich region binding / isotype switching / oxidized pyrimidine DNA binding / response to TNF agonist / negative regulation of endoplasmic reticulum unfolded protein response / positive regulation of base-excision repair / positive regulation of respiratory burst involved in inflammatory response / ribosome disassembly / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / positive regulation of gastrulation / protein tyrosine kinase inhibitor activity / positive regulation of endodeoxyribonuclease activity / nucleolus organization / IRE1-RACK1-PP2A complex / RNA catabolic process / positive regulation of Golgi to plasma membrane protein transport / TNFR1-mediated ceramide production / negative regulation of DNA repair / negative regulation of RNA splicing / supercoiled DNA binding / KSRP (KHSRP) binds and destabilizes mRNA / NF-kappaB complex / neural crest cell differentiation / oxidized purine DNA binding / cysteine-type endopeptidase activator activity involved in apoptotic process / positive regulation of ubiquitin-protein transferase activity / maturation of 5.8S rRNA / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / negative regulation of bicellular tight junction assembly / regulation of establishment of cell polarity / ubiquitin-like protein conjugating enzyme binding / rRNA modification in the nucleus and cytosol / negative regulation of phagocytosis / erythrocyte homeostasis / Formation of the ternary complex, and subsequently, the 43S complex / cytoplasmic side of rough endoplasmic reticulum membrane / nuclear chromosome / negative regulation of ubiquitin protein ligase activity / protein kinase A binding / laminin receptor activity / ion channel inhibitor activity / Ribosomal scanning and start codon recognition / pigmentation / Translation initiation complex formation / Association of TriC/CCT with target proteins during biosynthesis / positive regulation of mitochondrial depolarization / mRNA catabolic process / positive regulation of T cell receptor signaling pathway / fibroblast growth factor binding / negative regulation of Wnt signaling pathway / monocyte chemotaxis / nuclear-transcribed mRNA catabolic process / TOR signaling / negative regulation of translational frameshifting / BH3 domain binding / positive regulation of activated T cell proliferation / Protein hydroxylation / SARS-CoV-1 modulates host translation machinery / iron-sulfur cluster binding / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / regulation of cell division / cellular response to ethanol / mTORC1-mediated signalling / Peptide chain elongation / Selenocysteine synthesis / Formation of a pool of free 40S subunits / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Eukaryotic Translation Termination Similarity search - Function | ||||||||||||||||||
| Biological species | Homo sapiens (human) Cricket paralysis virus | ||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 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 | 9g8o.cif.gz | 3.1 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb9g8o.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 9g8o.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/g8/9g8o ftp://data.pdbj.org/pub/pdb/validation_reports/g8/9g8o | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 51134MC ![]() 9g8mC ![]() 9g8nC ![]() 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, 8 molecules BCDAEMSfSg
| #1: Protein | Mass: 176064.750 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: SKIC3, KIAA0372, TTC37 / Production host: ![]() | ||||||||||
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| #2: Protein | Mass: 33617.465 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: WDR61 / Production host: ![]() #9: 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 #10: 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 #16: 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: ![]() #49: Protein | | Mass: 18004.041 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62979#50: Protein | | Mass: 35115.652 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P63244 |
-Exosome complex component ... , 9 types, 9 molecules FJKLNOGHI
| #3: 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: ![]() |
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| #4: 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: ![]() |
| #5: 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: ![]() |
| #6: 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: ![]() |
| #7: 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: ![]() |
| #8: 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: ![]() |
| #11: 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: ![]() |
| #12: Protein | Mass: 29940.502 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: EXOSC3, RRP40, CGI-102 / Production host: ![]() |
| #13: 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: ![]() |
-RNA chain , 2 types, 2 molecules XS2
| #14: RNA chain | Mass: 79333.953 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Cricket paralysis virus |
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| #17: RNA chain | Mass: 602752.875 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) |
-Protein/peptide , 1 types, 1 molecules Ln
| #15: Protein/peptide | Mass: 3473.451 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62945 |
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+40S ribosomal protein ... , 31 types, 31 molecules SASBSCSDSESFSGSHSISJSKSLSMSNSOSPSQSRSSSTSUSVSWSXSYSZSaSbScSdSe
-Details
| Has protein modification | 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: human 40S ribosome bound by a SKI238-exosome complex / Type: RIBOSOME Entity ID: #14, #34-#39, #41, #44, #46, #15, #47, #49-#50, #20, #24, #17, #27, #30, #18, #31, #19, #32, #21, #40, #22, #42, #9, #1-#2, #23, #43, #3, #11-#13, #4-#5, #10, #16, #6-#8, #25, #45, #26, #48, #28-#29, #33 Source: NATURAL |
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| Molecular weight | Experimental value: NO |
| Source (natural) | Organism: Homo sapiens (human) |
| Source (recombinant) | Organism: ![]() |
| Buffer solution | pH: 7.4 |
| 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: FEI TITAN 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) |
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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: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 53460 / Symmetry type: POINT | ||||||||||||||||||||||||
| Refine LS restraints |
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About Yorodumi




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











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FIELD EMISSION GUN