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Open data
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Basic information
| Entry | Database: PDB / ID: 8fru | ||||||||||||
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| Title | 60S subunit of the Giardia lamblia 80S ribosome | ||||||||||||
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Keywords | RIBOSOME / Giardia lamblia / Ribosome structure / Translation / parasite | ||||||||||||
| Function / homology | Function and homology informationmaturation of LSU-rRNA / cytosolic ribosome / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosomal large subunit biogenesis / modification-dependent protein catabolic process / protein tag activity / ribosome biogenesis / large ribosomal subunit / 5S rRNA binding / ribosomal large subunit assembly ...maturation of LSU-rRNA / cytosolic ribosome / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosomal large subunit biogenesis / modification-dependent protein catabolic process / protein tag activity / ribosome biogenesis / large ribosomal subunit / 5S rRNA binding / ribosomal large subunit assembly / large ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / cytoplasmic translation / negative regulation of translation / rRNA binding / protein ubiquitination / structural constituent of ribosome / ribosome / translation / ribonucleoprotein complex / mRNA binding / ubiquitin protein ligase binding / nucleolus / RNA binding / zinc ion binding / nucleus / cytoplasm Similarity search - Function | ||||||||||||
| Biological species | Giardia intestinalis assemblage A (eukaryote) | ||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.49 Å | ||||||||||||
Authors | Eiler, D.R. / Wimberly, B.T. / Bilodeau, D.Y. / Rissland, O.S. / Kieft, J.S. | ||||||||||||
| Funding support | United States, 3items
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Citation | Journal: Structure / Year: 2024Title: The Giardia lamblia ribosome structure reveals divergence in several biological pathways and the mode of emetine function. Authors: Daniel R Eiler / Brian T Wimberly / Danielle Y Bilodeau / J Matthew Taliaferro / Philip Reigan / Olivia S Rissland / Jeffrey S Kieft / ![]() Abstract: Giardia lamblia is a deeply branching protist and a human pathogen. Its unusual biology presents the opportunity to explore conserved and fundamental molecular mechanisms. We determined the structure ...Giardia lamblia is a deeply branching protist and a human pathogen. Its unusual biology presents the opportunity to explore conserved and fundamental molecular mechanisms. We determined the structure of the G. lamblia 80S ribosome bound to tRNA, mRNA, and the antibiotic emetine by cryo-electron microscopy, to an overall resolution of 2.49 Å. The structure reveals rapidly evolving protein and nucleotide regions, differences in the peptide exit tunnel, and likely altered ribosome quality control pathways. Examination of translation initiation factor binding sites suggests these interactions are conserved despite a divergent initiation mechanism. Highlighting the potential of G. lamblia to resolve conserved biological principles; our structure reveals the interactions of the translation inhibitor emetine with the ribosome and mRNA, thus providing insight into the mechanism of action for this widely used antibiotic. Our work defines key questions in G. lamblia and motivates future experiments to explore the diversity of eukaryotic gene regulation. | ||||||||||||
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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 | 8fru.cif.gz | 3 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb8fru.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 8fru.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 8fru_validation.pdf.gz | 1.8 MB | Display | wwPDB validaton report |
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| Full document | 8fru_full_validation.pdf.gz | 1.8 MB | Display | |
| Data in XML | 8fru_validation.xml.gz | 190.2 KB | Display | |
| Data in CIF | 8fru_validation.cif.gz | 345.5 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/fr/8fru ftp://data.pdbj.org/pub/pdb/validation_reports/fr/8fru | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 29407MC ![]() 8fvyC ![]() 8g4iC ![]() 8g4sC 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
+60S ribosomal protein ... , 40 types, 40 molecules BaCIpDHGJOLMNQSRTVPXYWZbhFdegf...
-RNA chain , 3 types, 3 molecules 341
| #41: RNA chain | Mass: 38672.023 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Giardia intestinalis assemblage A (eukaryote)References: GenBank: 1940868085 |
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| #42: RNA chain | Mass: 45586.270 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Giardia intestinalis assemblage A (eukaryote)References: GenBank: 583967408 |
| #43: RNA chain | Mass: 871348.812 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Giardia intestinalis assemblage A (eukaryote)References: GenBank: 2333213660 |
-Non-polymers , 6 types, 3314 molecules 










| #44: Chemical | ChemComp-K / #45: Chemical | ChemComp-MG / #46: Chemical | #47: Chemical | ChemComp-NA / #48: Chemical | ChemComp-SPD / | #49: Water | ChemComp-HOH / | |
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-Details
| Has ligand of interest | 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: 60S ribosomal subunit of the 80S Giardia intestinalis assemblage A ribosome Type: RIBOSOME / Entity ID: #1-#43 / Source: NATURAL |
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| Source (natural) | Organism: Giardia intestinalis assemblage A (eukaryote) |
| Buffer solution | pH: 7.4 |
| 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: 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: 1900 nm / Nominal defocus min: 500 nm |
| Image recording | Electron dose: 72.26 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
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| 3D reconstruction | Resolution: 2.49 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 289618 / Symmetry type: POINT | ||||||||||||||||||||||||
| Refine LS restraints |
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About Yorodumi




Giardia intestinalis assemblage A (eukaryote)
United States, 3items
Citation









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FIELD EMISSION GUN