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Yorodumi- PDB-6zsg: Human mitochondrial ribosome in complex with mRNA, A-site tRNA, P... -
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- Basic information
Basic information
| Entry | Database: PDB / ID: 6zsg | ||||||||||||||||||
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| Title | Human mitochondrial ribosome in complex with mRNA, A-site tRNA, P-site tRNA and E-site tRNA | ||||||||||||||||||
|  Components | 
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|  Keywords | TRANSLATION / Mitochondria / Ribosome / mRNA / tRNA | ||||||||||||||||||
| Function / homology |  Function and homology information 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 ...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) synthetic construct (others) | ||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4 Å | ||||||||||||||||||
|  Authors | Aibara, S. / Singh, V. / Modelska, A. / Amunts, A. | ||||||||||||||||||
| Funding support |  Sweden, European Union, 4items 
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|  Citation |  Journal: Elife / Year: 2020 Title: 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. | ||||||||||||||||||
| History | 
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- Structure visualization
Structure visualization
| Movie | 
 
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| Structure viewer | Molecule:  Molmil  Jmol/JSmol | 
- Downloads & links
Downloads & links
- Download
Download
| PDBx/mmCIF format |  6zsg.cif.gz | 6.5 MB | Display |  PDBx/mmCIF format | 
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| PDB format |  pdb6zsg.ent.gz | Display |  PDB format | |
| PDBx/mmJSON format |  6zsg.json.gz | Tree view |  PDBx/mmJSON format | |
| Others |  Other downloads | 
-Validation report
| Summary document |  6zsg_validation.pdf.gz | 1.7 MB | Display |  wwPDB validaton report | 
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| Full document |  6zsg_full_validation.pdf.gz | 1.9 MB | Display | |
| Data in XML |  6zsg_validation.xml.gz | 375.2 KB | Display | |
| Data in CIF |  6zsg_validation.cif.gz | 619.3 KB | Display | |
| Arichive directory |  https://data.pdbj.org/pub/pdb/validation_reports/zs/6zsg  ftp://data.pdbj.org/pub/pdb/validation_reports/zs/6zsg | HTTPS FTP | 
-Related structure data
| Related structure data |  11397MC  6zs9C  6zsaC  6zsbC  6zscC  6zsdC  6zseC  7og4C M: map data used to model this data C: citing same article ( | 
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| Similar structure data | 
- Links
Links
- Assembly
Assembly
| Deposited unit |  
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| 1 | 
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- Components
Components
+39S ribosomal protein  ... , 48 types, 53 molecules 0123456789XDXEXFXHXIXJXKXLXMXNXOXPXQXRXSXTXUXVXWXX...                              
-RNA chain , 7 types, 7 molecules XAAAXBr1r2r3r4      
| #11: RNA chain | Mass: 500694.000 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: cell / Source: (natural)   Homo sapiens (human) | 
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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) | 
| #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) | 
| #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) | 
| #86: RNA chain | Mass: 22113.090 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 | 
-Protein/peptide , 1 types, 1 molecules A
-Non-polymers , 4 types, 204 molecules 






| #90: Chemical | ChemComp-ZN / #91: Chemical | ChemComp-MG / #92: Chemical | ChemComp-DOL / | #93: Chemical | ChemComp-GTP / |  | 
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-Details
| Compound details | QUINUPRIST | 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
Sample preparation
| Component | Name: human mitochondrial ribosome / Type: RIBOSOME / Entity ID: #1-#88 / 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 | 
- Electron microscopy imaging
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 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) | 
- Processing
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: 13350 / Symmetry type: POINT | 
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