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- PDB-7a5h: Structure of the split human mitoribosomal large subunit with res... -
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Open data
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Basic information
Entry | Database: PDB / ID: 7a5h | ||||||||||||
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Title | Structure of the split human mitoribosomal large subunit with rescue factors mtRF-R and MTRES1 | ||||||||||||
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![]() | RIBOSOME / mitochondrial ribosome / ribosome stalling / cryo-EM | ||||||||||||
Function / homology | ![]() regulation of mitochondrial transcription / negative regulation of mitochondrial translation / mitochondrial large ribosomal subunit assembly / Complex I biogenesis / negative regulation of ribosome biogenesis / protein lipoylation / translation release factor activity / Mitochondrial Fatty Acid Beta-Oxidation / Protein lipoylation / Respiratory electron transport ...regulation of mitochondrial transcription / negative regulation of mitochondrial translation / mitochondrial large ribosomal subunit assembly / Complex I biogenesis / negative regulation of ribosome biogenesis / protein lipoylation / translation release factor activity / Mitochondrial Fatty Acid Beta-Oxidation / Protein lipoylation / Respiratory electron transport / mitochondrial translational elongation / mitochondrial translational termination / iron-sulfur cluster assembly complex / microprocessor complex / translation release factor activity, codon nonspecific / Mitochondrial translation elongation / Mitochondrial translation termination / positive regulation of mitochondrial translation / Mitochondrial translation initiation / mitochondrial large ribosomal subunit binding / mitochondrial fission / mitochondrial large ribosomal subunit / Hydrolases; Acting on ester bonds; Endoribonucleases producing 5'-phosphomonoesters / peptidyl-tRNA hydrolase / [2Fe-2S] cluster assembly / mitochondrial small ribosomal subunit / aminoacyl-tRNA hydrolase activity / iron-sulfur cluster assembly / mitochondrial ribosome / mitochondrial translation / ribosomal large subunit binding / : / mitochondrial electron transport, NADH to ubiquinone / mitochondrial respiratory chain complex I assembly / proton motive force-driven mitochondrial ATP synthesis / acyl binding / anatomical structure morphogenesis / acyl carrier activity / RNA processing / Mitochondrial protein degradation / aerobic respiration / rescue of stalled ribosome / ribosomal large subunit biogenesis / cellular response to leukemia inhibitory factor / fatty acid binding / mitochondrial membrane / fibrillar center / fatty acid biosynthetic process / large ribosomal subunit / double-stranded RNA binding / cell junction / small ribosomal subunit rRNA binding / 5S rRNA binding / large ribosomal subunit rRNA binding / endonuclease activity / cytosolic large ribosomal subunit / mitochondrial inner membrane / tRNA binding / nuclear body / rRNA binding / negative regulation of translation / ribosome / structural constituent of ribosome / mitochondrial matrix / ribonucleoprotein complex / translation / protein domain specific binding / nucleotide binding / mRNA binding / synapse / calcium ion binding / nucleolus / apoptotic process / mitochondrion / RNA binding / nucleoplasm / nucleus / plasma membrane / cytosol Similarity search - Function | ||||||||||||
Biological species | ![]() | ||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.3 Å | ||||||||||||
![]() | Desai, N. / Yang, H. / Chandrasekaran, V. / Kazi, R. / Minczuk, M. / Ramakrishnan, V. | ||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Elongational stalling activates mitoribosome-associated quality control. Authors: Nirupa Desai / Hanting Yang / Viswanathan Chandrasekaran / Razina Kazi / Michal Minczuk / V Ramakrishnan / ![]() Abstract: The human mitochondrial ribosome (mitoribosome) and associated proteins regulate the synthesis of 13 essential subunits of the oxidative phosphorylation complexes. We report the discovery of a ...The human mitochondrial ribosome (mitoribosome) and associated proteins regulate the synthesis of 13 essential subunits of the oxidative phosphorylation complexes. We report the discovery of a mitoribosome-associated quality control pathway that responds to interruptions during elongation, and we present structures at 3.1- to 3.3-angstrom resolution of mitoribosomal large subunits trapped during ribosome rescue. Release factor homolog C12orf65 (mtRF-R) and RNA binding protein C6orf203 (MTRES1) eject the nascent chain and peptidyl transfer RNA (tRNA), respectively, from stalled ribosomes. Recruitment of mitoribosome biogenesis factors to these quality control intermediates suggests additional roles for these factors during mitoribosome rescue. We also report related cryo-electron microscopy structures (3.7 to 4.4 angstrom resolution) of elongating mitoribosomes bound to tRNAs, nascent polypeptides, the guanosine triphosphatase elongation factors mtEF-Tu and mtEF-G1, and the Oxa1L translocase. | ||||||||||||
History |
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Structure visualization
Movie |
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 2.3 MB | Display | ![]() |
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PDB format | ![]() | Display | ![]() | |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 11643MC ![]() 7a5fC ![]() 7a5gC ![]() 7a5iC ![]() 7a5jC ![]() 7a5kC 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 ... , 44 types, 44 molecules DEFHIJKLMNOQRSTUVWXYZ012356789...
-Mitochondrial ... , 3 types, 3 molecules PuG
#12: Protein | Mass: 20465.348 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#51: Protein | Mass: 26203.076 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#59: Protein | Mass: 27989.369 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Protein , 7 types, 7 molecules jopqvwC
#41: Protein | Mass: 13696.684 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#45: Protein | Mass: 12292.333 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#46: Protein | Mass: 23674.203 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#47: Protein | Mass: 25426.895 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#52: Protein | Mass: 8460.787 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#53: Protein | Mass: 17434.273 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#58: Protein | Mass: 18880.090 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Protein/peptide , 2 types, 2 molecules tY2
#50: Protein/peptide | Mass: 2400.951 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#57: Protein/peptide | Mass: 2618.281 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-RNA chain , 3 types, 3 molecules AB24
#54: RNA chain | Mass: 500019.594 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#55: RNA chain | Mass: 23266.883 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#56: RNA chain | Mass: 23378.979 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Non-polymers , 3 types, 95 molecules ![](data/chem/img/MG.gif)
![](data/chem/img/ZN.gif)
![](data/chem/img/PNS.gif)
![](data/chem/img/ZN.gif)
![](data/chem/img/PNS.gif)
#60: Chemical | ChemComp-MG / #61: Chemical | #62: Chemical | ChemComp-PNS / | |
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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 mitoribosome / Type: RIBOSOME / Entity ID: #1-#59 / Source: NATURAL |
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Source (natural) | Organism: ![]() |
Buffer solution | pH: 7.4 |
Specimen | Conc.: 0.4 mg/ml / 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: ![]() |
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
EM software | Name: EPU / Category: image acquisition |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
3D reconstruction | Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 48245 / Symmetry type: POINT |