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Yorodumi- PDB-6zu5: Structure of the Paranosema locustae ribosome in complex with Lso2 -
+Open data
-Basic information
Entry | Database: PDB / ID: 6zu5 | ||||||
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Title | Structure of the Paranosema locustae ribosome in complex with Lso2 | ||||||
Components |
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Keywords | RIBOSOME / Microsporidia / Pathogen / Hibernation / Genome Compaction | ||||||
Function / homology | ADENOSINE MONOPHOSPHATE / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) Function and homology information | ||||||
Biological species | Paranosema locustae (fungus) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.9 Å | ||||||
Authors | Ehrenbolger, K. / Jespersen, N. / Sharma, H. / Sokolova, Y.Y. / Tokarev, Y.S. / Vossbrinck, C.R. / Barandun, J. | ||||||
Funding support | Sweden, 1items
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Citation | Journal: PLoS Biol / Year: 2020 Title: Differences in structure and hibernation mechanism highlight diversification of the microsporidian ribosome. Authors: Kai Ehrenbolger / Nathan Jespersen / Himanshu Sharma / Yuliya Y Sokolova / Yuri S Tokarev / Charles R Vossbrinck / Jonas Barandun / Abstract: Assembling and powering ribosomes are energy-intensive processes requiring fine-tuned cellular control mechanisms. In organisms operating under strict nutrient limitations, such as pathogenic ...Assembling and powering ribosomes are energy-intensive processes requiring fine-tuned cellular control mechanisms. In organisms operating under strict nutrient limitations, such as pathogenic microsporidia, conservation of energy via ribosomal hibernation and recycling is critical. The mechanisms by which hibernation is achieved in microsporidia, however, remain poorly understood. Here, we present the cryo-electron microscopy structure of the ribosome from Paranosema locustae spores, bound by the conserved eukaryotic hibernation and recycling factor Lso2. The microsporidian Lso2 homolog adopts a V-shaped conformation to bridge the mRNA decoding site and the large subunit tRNA binding sites, providing a reversible ribosome inactivation mechanism. Although microsporidian ribosomes are highly compacted, the P. locustae ribosome retains several rRNA segments absent in other microsporidia, and represents an intermediate state of rRNA reduction. In one case, the near complete reduction of an expansion segment has resulted in a single bound nucleotide, which may act as an architectural co-factor to stabilize a protein-protein interface. The presented structure highlights the reductive evolution in these emerging pathogens and sheds light on a conserved mechanism for eukaryotic ribosome hibernation. | ||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 6zu5.cif.gz | 3.7 MB | Display | PDBx/mmCIF format |
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PDB format | pdb6zu5.ent.gz | Display | PDB format | |
PDBx/mmJSON format | 6zu5.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/zu/6zu5 ftp://data.pdbj.org/pub/pdb/validation_reports/zu/6zu5 | HTTPS FTP |
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-Related structure data
Related structure data | 11437MC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data | |
EM raw data | EMPIAR-11076 (Title: Single particle cryo-EM dataset of the Paranosema locustae ribosome bound to Lso2 Data size: 2.0 TB Data #1: Unaligned multi-frame micrographs of the Paranosema locustae Lso2-ribosome complex - 20 frames [micrographs - multiframe] Data #2: Unaligned multi-frame micrographs of the Paranosema locustae Lso2-ribosome complex - 40 frames [micrographs - multiframe]) |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
-RNA chain , 3 types, 3 molecules L50L70S60
#1: RNA chain | Mass: 854380.562 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Paranosema locustae (fungus) |
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#2: RNA chain | Mass: 38434.832 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Paranosema locustae (fungus) |
#43: RNA chain | Mass: 456967.562 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Paranosema locustae (fungus) |
+Protein , 71 types, 71 molecules LA0LAALB0LBBLC0LCCLD0LDDLE0LEELF0LFFLG0LGGLH0LHHLI0LIILJ0LJJLL0LLLLM0LMMLN0LNNLO0LOOLP0LPP...
-Non-polymers , 3 types, 188 molecules
#75: Chemical | ChemComp-MG / #76: Chemical | ChemComp-ZN / #77: Chemical | ChemComp-AMP / | |
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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 |
-Sample preparation
Component | Name: Lso2 bound to the ribosome of Paranosema locustae / Type: RIBOSOME / Entity ID: #1-#74 / Source: NATURAL |
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Molecular weight | Experimental value: NO |
Source (natural) | Organism: Paranosema locustae (fungus) |
Buffer solution | pH: 7.5 Details: 30 mM Tris-HCl, pH 7.5, 25 mM KCl, 5 mM magnesium acetate, 1 mM DTT, 1 mM EDTA |
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 R1.2/1.3 |
Vitrification | Instrument: FEI VITROBOT MARK I / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 298 K |
-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: OTHER |
Electron lens | Mode: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Electron dose: 28.6 e/Å2 / Film or detector model: GATAN K2 QUANTUM (4k x 4k) / Num. of grids imaged: 1 |
-Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 320669 | ||||||||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 124947 / Num. of class averages: 1 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: OTHER | ||||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 4V88 |