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Yorodumi- PDB-7oic: Cryo-EM structure of late human 39S mitoribosome assembly interme... -
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Basic information
| Entry | Database: PDB / ID: 7oic | ||||||||||||||||||||||||||||||||||||
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| Title | Cryo-EM structure of late human 39S mitoribosome assembly intermediates, state 4 | ||||||||||||||||||||||||||||||||||||
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Keywords | RIBOSOME / 39S mitoribosome / ribosome biogenesis | ||||||||||||||||||||||||||||||||||||
| Function / homology | Function and homology informationmRNA (cytidine-5-)-methyltransferase activity / rRNA modification in the mitochondrion / mitochondrial RNA modification / mitochondrial RNA catabolic process / negative regulation of mitochondrial translation / mitochondrial large ribosomal subunit assembly / rRNA (cytosine-C5-)-methyltransferase activity / negative regulation of ribosome biogenesis / Complex I biogenesis / protein lipoylation ...mRNA (cytidine-5-)-methyltransferase activity / rRNA modification in the mitochondrion / mitochondrial RNA modification / mitochondrial RNA catabolic process / negative regulation of mitochondrial translation / mitochondrial large ribosomal subunit assembly / rRNA (cytosine-C5-)-methyltransferase activity / negative regulation of ribosome biogenesis / Complex I biogenesis / protein lipoylation / Mitochondrial Fatty Acid Beta-Oxidation / Protein lipoylation / positive regulation of mitochondrial translation / RNA methyltransferase activity / Respiratory electron transport / rRNA import into mitochondrion / rRNA methyltransferase activity / mitochondrial translational termination / mitochondrial transcription / mitochondrial translational elongation / mitochondrial ribosome assembly / Mitochondrial translation elongation / Mitochondrial translation termination / translation release factor activity, codon nonspecific / Mitochondrial translation initiation / translation release factor activity / camera-type eye development / iron-sulfur cluster assembly complex / mitochondrial fission / mitochondrial large ribosomal subunit / peptidyl-tRNA hydrolase / mitochondrial large ribosomal subunit binding / mitochondrial ribosome / mitochondrial [2Fe-2S] assembly complex / mitochondrial small ribosomal subunit / Hydrolases; Acting on ester bonds; Endoribonucleases producing 5'-phosphomonoesters / peptidyl-tRNA hydrolase activity / rRNA methylation / mitochondrial translation / [2Fe-2S] cluster assembly / : / iron-sulfur cluster assembly / acyl binding / ribosomal large subunit binding / acyl carrier activity / mitochondrial respiratory chain complex I assembly / proton motive force-driven mitochondrial ATP synthesis / mitochondrial electron transport, NADH to ubiquinone / respiratory chain complex I / anatomical structure morphogenesis / RNA processing / Mitochondrial protein degradation / rescue of stalled cytosolic ribosome / aerobic respiration / Transferases; Transferring one-carbon groups; Methyltransferases / fatty acid binding / cellular response to leukemia inhibitory factor / ribosomal large subunit biogenesis / methyltransferase activity / mitochondrial membrane / fibrillar center / rRNA processing / fatty acid biosynthetic process / cell junction / double-stranded RNA binding / heart development / 5S rRNA binding / double-stranded DNA binding / small ribosomal subunit rRNA binding / large ribosomal subunit rRNA binding / endonuclease activity / negative regulation of translation / mitochondrial inner membrane / rRNA binding / nuclear body / structural constituent of ribosome / ribosome / translation / mitochondrial matrix / ribonucleoprotein complex / protein domain specific binding / nucleotide binding / mRNA binding / apoptotic process / calcium ion binding / regulation of DNA-templated transcription / nucleolus / structural molecule activity / mitochondrion / extracellular space / RNA binding / nucleoplasm / nucleus / plasma membrane / cytosol Similarity search - Function | ||||||||||||||||||||||||||||||||||||
| Biological species | Homo sapiens (human) | ||||||||||||||||||||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å | ||||||||||||||||||||||||||||||||||||
Authors | Cheng, J. / Berninghausen, O. / Beckmann, R. | ||||||||||||||||||||||||||||||||||||
Citation | Journal: Nat Commun / Year: 2021Title: A distinct assembly pathway of the human 39S late pre-mitoribosome. Authors: Jingdong Cheng / Otto Berninghausen / Roland Beckmann / ![]() Abstract: Assembly of the mitoribosome is largely enigmatic and involves numerous assembly factors. Little is known about their function and the architectural transitions of the pre-ribosomal intermediates. ...Assembly of the mitoribosome is largely enigmatic and involves numerous assembly factors. Little is known about their function and the architectural transitions of the pre-ribosomal intermediates. Here, we solve cryo-EM structures of the human 39S large subunit pre-ribosomes, representing five distinct late states. Besides the MALSU1 complex used as bait for affinity purification, we identify several assembly factors, including the DDX28 helicase, MRM3, GTPBP10 and the NSUN4-mTERF4 complex, all of which keep the 16S rRNA in immature conformations. The late transitions mainly involve rRNA domains IV and V, which form the central protuberance, the intersubunit side and the peptidyltransferase center of the 39S subunit. Unexpectedly, we find deacylated tRNA in the ribosomal E-site, suggesting a role in 39S assembly. Taken together, our study provides an architectural inventory of the distinct late assembly phase of the human 39S mitoribosome. | ||||||||||||||||||||||||||||||||||||
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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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| PDBx/mmCIF format | 7oic.cif.gz | 2.3 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb7oic.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 7oic.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 7oic_validation.pdf.gz | 1.5 MB | Display | wwPDB validaton report |
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| Full document | 7oic_full_validation.pdf.gz | 1.7 MB | Display | |
| Data in XML | 7oic_validation.xml.gz | 241.4 KB | Display | |
| Data in CIF | 7oic_validation.cif.gz | 403.5 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/oi/7oic ftp://data.pdbj.org/pub/pdb/validation_reports/oi/7oic | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 12925MC ![]() 7oi6C ![]() 7oi7C ![]() 7oi8C ![]() 7oi9C ![]() 7oiaC ![]() 7oibC ![]() 7oidC ![]() 7oieC 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
-RNA chain , 3 types, 3 molecules ABC
| #1: RNA chain | Mass: 500043.594 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) |
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| #2: RNA chain | Mass: 22022.131 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: GenBank: 1485738021 |
| #58: RNA chain | Mass: 589.430 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human) |
+Large ribosomal subunit protein ... , 49 types, 49 molecules DEFHIJKLMNOPQRSTUVWXYZ01234567...
-Protein , 6 types, 6 molecules duvwxy
| #38: Protein | Mass: 35402.918 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9BRJ2 |
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| #53: Protein | Mass: 26203.076 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q96EH3 |
| #54: Protein | Mass: 8460.787 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: L0R8F8 |
| #55: Protein | Mass: 17434.273 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O14561 |
| #56: Protein | Mass: 43187.367 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q96CB9 |
| #57: Protein | Mass: 44012.473 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q7Z6M4 |
-Non-polymers , 4 types, 81 molecules 






| #59: Chemical | ChemComp-MG / #60: Chemical | #61: Chemical | ChemComp-PNS / | #62: Chemical | ChemComp-SAM / | |
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-Details
| Has ligand of interest | N |
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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: Human 39S mitoribosome assembly intermediates, state 4 Type: RIBOSOME / Entity ID: #1-#57 / Source: NATURAL |
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| Source (natural) | Organism: Homo sapiens (human) |
| Buffer solution | pH: 7.4 |
| 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: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD |
| Image recording | Electron dose: 28 e/Å2 / Film or detector model: FEI FALCON II (4k x 4k) |
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Processing
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| CTF correction | Type: NONE | ||||||||||||||||||
| 3D reconstruction | Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 83176 / Symmetry type: POINT |
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