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Yorodumi- PDB-6zsa: Human mitochondrial ribosome bound to mRNA, A-site tRNA and P-sit... -
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Basic information
| Entry | Database: PDB / ID: 6zsa | |||||||||||||||
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| Title | Human mitochondrial ribosome bound to mRNA, A-site tRNA and P-site tRNA | |||||||||||||||
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Keywords | TRANSLATION / Mitochondria / Ribosome / mRNA / tRNA | |||||||||||||||
| Function / homology | Function and homology informationrRNA import into mitochondrion / mitochondrial translational termination / mitochondrial transcription / mitochondrial ribosome assembly / mitochondrial translational elongation / Mitochondrial translation elongation / Mitochondrial translation termination / translation release factor activity, codon nonspecific / Mitochondrial translation initiation / translation release factor activity ...rRNA import into mitochondrion / mitochondrial translational termination / mitochondrial transcription / mitochondrial ribosome assembly / mitochondrial translational elongation / Mitochondrial translation elongation / Mitochondrial translation termination / translation release factor activity, codon nonspecific / Mitochondrial translation initiation / translation release factor activity / negative regulation of mitotic nuclear division / mitochondrial large ribosomal subunit / peptidyl-tRNA hydrolase / mitochondrial ribosome / mitochondrial small ribosomal subunit / Hydrolases; Acting on ester bonds; Endoribonucleases producing 5'-phosphomonoesters / peptidyl-tRNA hydrolase activity / mitochondrial translation / apoptotic mitochondrial changes / positive regulation of proteolysis / ribosomal small subunit binding / anatomical structure morphogenesis / RNA processing / Mitochondrial protein degradation / rescue of stalled ribosome / cellular response to leukemia inhibitory factor / apoptotic signaling pathway / fibrillar center / cell junction / double-stranded RNA binding / regulation of translation / ribosomal small subunit assembly / small ribosomal subunit / 5S rRNA binding / small ribosomal subunit rRNA binding / large ribosomal subunit rRNA binding / endonuclease activity / nuclear membrane / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / tRNA binding / cell population proliferation / mitochondrial inner membrane / negative regulation of translation / rRNA binding / nuclear body / structural constituent of ribosome / ribosome / translation / mitochondrial matrix / ribonucleoprotein complex / protein domain specific binding / nucleotide binding / intracellular membrane-bounded organelle / mRNA binding / apoptotic process / GTP binding / positive regulation of DNA-templated transcription / nucleolus / mitochondrion / extracellular space / RNA binding / nucleoplasm / nucleus / plasma membrane / cytoplasm / cytosol Similarity search - Function | |||||||||||||||
| Biological species | Homo sapiens (human) | |||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4 Å | |||||||||||||||
Authors | Aibara, S. / Singh, V. / Modelska, A. / Amunts, A. | |||||||||||||||
| Funding support | 4items
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Citation | Journal: Elife / Year: 2020Title: Structural basis of mitochondrial translation. Authors: Shintaro Aibara / Vivek Singh / Angelika Modelska / Alexey Amunts / ![]() Abstract: Translation of mitochondrial messenger RNA (mt-mRNA) is performed by distinct mitoribosomes comprising at least 36 mitochondria-specific proteins. How these mitoribosomal proteins assist in the ...Translation of mitochondrial messenger RNA (mt-mRNA) is performed by distinct mitoribosomes comprising at least 36 mitochondria-specific proteins. How these mitoribosomal proteins assist in the binding of mt-mRNA and to what extent they are involved in the translocation of transfer RNA (mt-tRNA) is unclear. To visualize the process of translation in human mitochondria, we report ~3.0 Å resolution structure of the human mitoribosome, including the L7/L12 stalk, and eight structures of its functional complexes with mt-mRNA, mt-tRNAs, recycling factor and additional trans factors. The study reveals a transacting protein module LRPPRC-SLIRP that delivers mt-mRNA to the mitoribosomal small subunit through a dedicated platform formed by the mitochondria-specific protein mS39. Mitoribosomal proteins of the large subunit mL40, mL48, and mL64 coordinate translocation of mt-tRNA. The comparison between those structures shows dynamic interactions between the mitoribosome and its ligands, suggesting a sequential mechanism of conformational changes. | |||||||||||||||
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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 | 6zsa.cif.gz | 6.4 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb6zsa.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 6zsa.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 6zsa_validation.pdf.gz | 1.8 MB | Display | wwPDB validaton report |
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| Full document | 6zsa_full_validation.pdf.gz | 2 MB | Display | |
| Data in XML | 6zsa_validation.xml.gz | 377.4 KB | Display | |
| Data in CIF | 6zsa_validation.cif.gz | 615.7 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/zs/6zsa ftp://data.pdbj.org/pub/pdb/validation_reports/zs/6zsa | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 11391MC ![]() 6zs9C ![]() 6zsbC ![]() 6zscC ![]() 6zsdC ![]() 6zseC ![]() 6zsgC ![]() 7og4C 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
+39S ribosomal protein ... , 48 types, 53 molecules 0123456789XDXEXFXHXIXJXKXLXMXNXOXPXQXRXSXTXUXVXWXX...
-RNA chain , 6 types, 6 molecules XAAAXBr1r2r3
| #11: RNA chain | Mass: 500042.594 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: cell / Source: (natural) Homo sapiens (human) / References: GenBank: 1025814679 |
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| #17: RNA chain | Mass: 306112.125 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: cell / Source: (natural) Homo sapiens (human) |
| #43: RNA chain | Mass: 22961.699 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: cell / Source: (natural) Homo sapiens (human) |
| #83: RNA chain | Mass: 3821.602 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: cell / Source: (natural) Homo sapiens (human) / References: UniProt: Q9NP92*PLUS |
| #84: RNA chain | Mass: 22427.281 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: cell / Source: (natural) Homo sapiens (human) / References: UniProt: P52815*PLUS |
| #85: RNA chain | Mass: 22037.070 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: cell / Source: (natural) Homo sapiens (human) |
+28S ribosomal protein ... , 27 types, 27 molecules A0A1ABACADAEAFAGAHAIAJAKALAMANAOAPAQARASATAUAVAWAXAYAZ
-Protein , 6 types, 6 molecules A2A3A4opq
| #14: Protein | Mass: 13498.819 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: cell / Source: (natural) Homo sapiens (human) / References: UniProt: Q96BP2 |
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| #15: Protein | Mass: 22395.326 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: cell / Source: (natural) Homo sapiens (human) / References: UniProt: Q9NWT8 |
| #16: Protein | Mass: 78648.547 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: cell / Source: (natural) Homo sapiens (human) / References: UniProt: Q96EY7 |
| #79: Protein | Mass: 12292.333 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: cell / Source: (natural) Homo sapiens (human) / References: UniProt: Q9BQC6 |
| #80: Protein | Mass: 23674.203 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: cell / Source: (natural) Homo sapiens (human) / References: UniProt: Q14197, peptidyl-tRNA hydrolase |
| #81: Protein | Mass: 25426.895 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: cell / Source: (natural) Homo sapiens (human) / References: UniProt: Q8TAE8 |
-Non-polymers , 5 types, 205 molecules 








| #88: Chemical | ChemComp-ZN / #89: Chemical | ChemComp-MG / #90: Chemical | ChemComp-H8Q / ~{ | #91: Chemical | ChemComp-DOL / | #92: Chemical | ChemComp-GTP / | |
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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: human mitochondrial ribosome / Type: RIBOSOME / Entity ID: #1-#87 / Source: NATURAL |
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| Source (natural) | Organism: Homo sapiens (human) |
| Buffer solution | pH: 7.5 |
| 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: FEI TITAN KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER |
| Electron lens | Mode: BRIGHT FIELD |
| Image recording | Electron dose: 30 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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| 3D reconstruction | Resolution: 4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 14475 / Symmetry type: POINT |
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Homo sapiens (human)
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