+Open data
-Basic information
Entry | Database: PDB / ID: 7aih | ||||||
---|---|---|---|---|---|---|---|
Title | The Large subunit of the Kinetoplastid mitochondrial ribosome | ||||||
Components |
| ||||||
Keywords | RIBOSOME / Mitochondria / Kinetoplastid | ||||||
Function / homology | Function and homology information medium-chain fatty acid-CoA ligase activity / kinetoplast / nuclear lumen / mitochondrial large ribosomal subunit / ciliary plasm / mitochondrial ribosome / mitochondrial translation / cyclosporin A binding / fatty acid metabolic process / peptidylprolyl isomerase ...medium-chain fatty acid-CoA ligase activity / kinetoplast / nuclear lumen / mitochondrial large ribosomal subunit / ciliary plasm / mitochondrial ribosome / mitochondrial translation / cyclosporin A binding / fatty acid metabolic process / peptidylprolyl isomerase / peptidyl-prolyl cis-trans isomerase activity / large ribosomal subunit / protein folding / large ribosomal subunit rRNA binding / negative regulation of translation / cytoskeleton / rRNA binding / ribosome / structural constituent of ribosome / ribonucleoprotein complex / translation / mRNA binding / mitochondrion / RNA binding / membrane / nucleus / metal ion binding / cytosol / cytoplasm Similarity search - Function | ||||||
Biological species | Leishmania major (eukaryote) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.6 Å | ||||||
Authors | Soufari, H. / Waltz, F. / Parrot, C. / Bochler, A. / Hashem, Y. | ||||||
Funding support | France, 1items
| ||||||
Citation | Journal: Proc Natl Acad Sci U S A / Year: 2020 Title: 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. | ||||||
History |
|
-Structure visualization
Movie |
Movie viewer |
---|---|
Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 7aih.cif.gz | 3.3 MB | Display | PDBx/mmCIF format |
---|---|---|---|---|
PDB format | pdb7aih.ent.gz | Display | PDB format | |
PDBx/mmJSON format | 7aih.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 7aih_validation.pdf.gz | 1.9 MB | Display | wwPDB validaton report |
---|---|---|---|---|
Full document | 7aih_full_validation.pdf.gz | 2.3 MB | Display | |
Data in XML | 7aih_validation.xml.gz | 407.2 KB | Display | |
Data in CIF | 7aih_validation.cif.gz | 642.1 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/ai/7aih ftp://data.pdbj.org/pub/pdb/validation_reports/ai/7aih | HTTPS FTP |
-Related structure data
Related structure data | 11796MC 7am2C 7aneC 7aorC M: map data used to model this data C: citing same article (ref.) |
---|---|
Similar structure data |
-Links
-Assembly
Deposited unit |
|
---|---|
1 |
|
-Components
+Protein , 65 types, 65 molecules ABCDFGHIJKLMNOPQRSTUVWXYZBAUABBAwBj...
-Putative ribosomal protein ... , 3 types, 3 molecules EBLBO
#5: Protein | Mass: 40274.641 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Leishmania major (eukaryote) / References: UniProt: E9ACT9 |
---|---|
#65: Protein | Mass: 43379.852 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Leishmania major (eukaryote) / References: UniProt: Q4QIE1 |
#66: Protein | Mass: 21633.137 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Leishmania major (eukaryote) / References: UniProt: Q4Q2G1 |
-Peptidyl-prolyl cis-trans ... , 2 types, 2 molecules BIBH
#34: Protein | Mass: 28924.203 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Leishmania major (eukaryote) / References: UniProt: Q4Q1A6, peptidylprolyl isomerase |
---|---|
#47: Protein | Mass: 25314.658 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Leishmania major (eukaryote) / References: UniProt: Q4QBK2, peptidylprolyl isomerase |
-RNA chain , 1 types, 1 molecules 1
#71: RNA chain | Mass: 2895416.500 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Leishmania major (eukaryote) |
---|
-Non-polymers , 2 types, 7 molecules
#72: Chemical | ChemComp-ZN / #73: Chemical | ChemComp-NAD / | |
---|
-Details
Has ligand of interest | Y |
---|
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
---|---|
EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: Leishmania mitochondrial ribosome / Type: RIBOSOME / Entity ID: #1-#71 / Source: NATURAL |
---|---|
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 mesh size: 300 divisions/in. / Grid type: Quantifoil |
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % |
-Electron microscopy imaging
Experimental equipment | Model: Talos Arctica / Image courtesy: FEI Company |
---|---|
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) |
-Processing
EM software |
| |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||
3D reconstruction | Resolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 82060 / Symmetry type: POINT |