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Yorodumi- PDB-7am2: Intermediate assembly of the Large subunit from Leishmania major ... -
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Basic information
| Entry | Database: PDB / ID: 7am2 | ||||||
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| Title | Intermediate assembly of the Large subunit from Leishmania major mitochondrial ribosome | ||||||
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Keywords | RIBOSOME / Mitochondria / Kinetoplastid | ||||||
| Function / homology | Function and homology informationpseudouridine synthesis / pseudouridine synthase activity / negative regulation of ribosome biogenesis / kinetoplast / RNA methyltransferase activity / mitochondrial large ribosomal subunit / ciliary plasm / mitochondrial ribosome / nuclear lumen / mitochondrial translation ...pseudouridine synthesis / pseudouridine synthase activity / negative regulation of ribosome biogenesis / kinetoplast / RNA methyltransferase activity / mitochondrial large ribosomal subunit / ciliary plasm / mitochondrial ribosome / nuclear lumen / mitochondrial translation / cyclosporin A binding / acyl binding / acyl carrier activity / ribosomal large subunit binding / RNA processing / translation initiation factor activity / protein folding chaperone / peptidylprolyl isomerase / peptidyl-prolyl cis-trans isomerase activity / fatty acid biosynthetic process / unfolded protein binding / protein folding / ribosome biogenesis / large ribosomal subunit / protein-folding chaperone binding / large ribosomal subunit rRNA binding / methylation / nucleic acid binding / RNA helicase activity / negative regulation of translation / hydrolase activity / rRNA binding / structural constituent of ribosome / ribosome / translation / mitochondrial matrix / ribonucleoprotein complex / GTPase activity / mRNA binding / GTP binding / nucleolus / mitochondrion / RNA binding / ATP binding / metal ion binding / nucleus / membrane / cytoplasm Similarity search - Function | ||||||
| Biological species | Leishmania tarentolae (eukaryote) | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å | ||||||
Authors | Soufari, H. / Waltz, F. / Parrot, C. / Bochler, A. / Hashem, Y. | ||||||
| Funding support | France, 1items
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Citation | Journal: Proc Natl Acad Sci U S A / Year: 2020Title: Structure of the mature kinetoplastids mitoribosome and insights into its large subunit biogenesis. Authors: Heddy Soufari / Florent Waltz / Camila Parrot / Stéphanie Durrieu-Gaillard / Anthony Bochler / Lauriane Kuhn / Marie Sissler / Yaser Hashem / ![]() Abstract: Kinetoplastids are unicellular eukaryotic parasites responsible for such human pathologies as Chagas disease, sleeping sickness, and leishmaniasis. They have a single large mitochondrion, essential ...Kinetoplastids are unicellular eukaryotic parasites responsible for such human pathologies as Chagas disease, sleeping sickness, and leishmaniasis. They have a single large mitochondrion, essential for the parasite survival. In kinetoplastid mitochondria, most of the molecular machineries and gene expression processes have significantly diverged and specialized, with an extreme example being their mitochondrial ribosomes. These large complexes are in charge of translating the few essential mRNAs encoded by mitochondrial genomes. Structural studies performed in already highlighted the numerous peculiarities of these mitoribosomes and the maturation of their small subunit. However, several important aspects mainly related to the large subunit (LSU) remain elusive, such as the structure and maturation of its ribosomal RNA. Here we present a cryo-electron microscopy study of the protozoans and mitoribosomes. For both species, we obtained the structure of their mature mitoribosomes, complete rRNA of the LSU, as well as previously unidentified ribosomal proteins. In addition, we introduce the structure of an LSU assembly intermediate in the presence of 16 identified maturation factors. These maturation factors act on both the intersubunit and the solvent sides of the LSU, where they refold and chemically modify the rRNA and prevent early translation before full maturation of the LSU. | ||||||
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Structure visualization
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| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 7am2.cif.gz | 3.4 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb7am2.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 7am2.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 7am2_validation.pdf.gz | 2.2 MB | Display | wwPDB validaton report |
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| Full document | 7am2_full_validation.pdf.gz | 2.7 MB | Display | |
| Data in XML | 7am2_validation.xml.gz | 426.2 KB | Display | |
| Data in CIF | 7am2_validation.cif.gz | 674 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/am/7am2 ftp://data.pdbj.org/pub/pdb/validation_reports/am/7am2 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 11821MC ![]() 7aihC ![]() 7aneC ![]() 7aorC 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
+Protein , 64 types, 65 molecules ABCFGIJKLMNOQRSTVZBACAUABBCBBKBQBNBEAtAuAe...
-Putative ribosomal protein ... , 2 types, 2 molecules EBO
| #4: Protein | Mass: 40274.641 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Leishmania tarentolae (eukaryote) / References: UniProt: E9ACT9 |
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| #29: Protein | Mass: 21633.137 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Leishmania tarentolae (eukaryote) / References: UniProt: Q4Q2G1 |
-Peptidyl-prolyl cis-trans ... , 2 types, 2 molecules BHBl
| #46: Protein | Mass: 25314.658 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Leishmania tarentolae (eukaryote) / References: UniProt: Q4QBK2, peptidylprolyl isomerase |
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| #54: Protein | Mass: 28924.203 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Leishmania tarentolae (eukaryote) / References: UniProt: Q4Q1A6, peptidylprolyl isomerase |
-G domain-containing ... , 2 types, 2 molecules BTBV
| #61: Protein | Mass: 51661.969 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Leishmania tarentolae (eukaryote) / References: UniProt: E9AFZ4 |
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| #64: Protein | Mass: 86927.453 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Leishmania tarentolae (eukaryote) / References: UniProt: Q4Q4X0 |
-Protein/peptide , 3 types, 3 molecules U7U1U2
| #65: Protein/peptide | Mass: 3422.209 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Leishmania tarentolae (eukaryote) |
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| #67: Protein/peptide | Mass: 3287.594 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Leishmania tarentolae (eukaryote) |
| #72: Protein/peptide | Mass: 2647.894 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Leishmania tarentolae (eukaryote) |
-RNA chain , 4 types, 4 molecules 1R1R2R5
| #73: RNA chain | Mass: 6061920.500 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Leishmania tarentolae (eukaryote) |
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| #74: RNA chain | Mass: 896.580 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Leishmania tarentolae (eukaryote) |
| #75: RNA chain | Mass: 10670.844 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Leishmania tarentolae (eukaryote) |
| #76: RNA chain | Mass: 1485.872 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Leishmania tarentolae (eukaryote) |
-Non-polymers , 2 types, 2 molecules 


| #78: Chemical | ChemComp-GTP / |
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| #79: Chemical | ChemComp-ATP / |
-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: Leishmania mitochondrial ribosome / Type: RIBOSOME Entity ID: #1, #10-#19, #2, #20-#29, #3, #30-#39, #4, #40-#49, #5, #50-#59, #6, #60-#69, #7, #70-#77, #8-#9 Source: NATURAL |
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| Source (natural) | Organism: Leishmania tarentolae (eukaryote) |
| Buffer solution | pH: 7 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Specimen support | Grid material: COPPER / Grid type: Quantifoil R2/2 |
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Talos Arctica / Image courtesy: FEI Company |
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| Microscopy | Model: FEI TALOS ARCTICA |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD |
| Image recording | Electron dose: 60 e/Å2 / Detector mode: INTEGRATING / Film or detector model: FEI FALCON III (4k x 4k) |
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Processing
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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: 59200 / Symmetry type: POINT |
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Leishmania tarentolae (eukaryote)
France, 1items
Citation
UCSF Chimera
















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