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Open data
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Basic information
Entry | Database: PDB / ID: 8qu5 | ||||||
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Title | mt-LSU assembly intermediate in GTPBP8 knock-out cells, state 2 | ||||||
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![]() | RIBOSOME / Mitochondria / Assembly / GTPBP8 | ||||||
Function / homology | ![]() negative regulation of mitochondrial translation / mitochondrial large ribosomal subunit assembly / protein lipoylation / Complex I biogenesis / negative regulation of ribosome biogenesis / Mitochondrial Fatty Acid Beta-Oxidation / Protein lipoylation / positive regulation of mitochondrial translation / rRNA import into mitochondrion / Respiratory electron transport ...negative regulation of mitochondrial translation / mitochondrial large ribosomal subunit assembly / protein lipoylation / Complex I biogenesis / negative regulation of ribosome biogenesis / Mitochondrial Fatty Acid Beta-Oxidation / Protein lipoylation / positive regulation of mitochondrial translation / rRNA import into mitochondrion / Respiratory electron transport / mitochondrial translational termination / mitochondrial translational elongation / translation release factor activity, codon nonspecific / Mitochondrial translation elongation / Mitochondrial translation termination / Mitochondrial translation initiation / translation release factor activity / mitochondrial [2Fe-2S] assembly complex / iron-sulfur cluster assembly complex / mitochondrial large ribosomal subunit / mitochondrial fission / mitochondrial large ribosomal subunit binding / peptidyl-tRNA hydrolase / mitochondrial ribosome / Hydrolases; Acting on ester bonds; Endoribonucleases producing 5'-phosphomonoesters / mitochondrial small ribosomal subunit / peptidyl-tRNA hydrolase activity / [2Fe-2S] cluster assembly / mitochondrial translation / iron-sulfur cluster assembly / acyl binding / acyl carrier activity / ribosomal large subunit binding / mitochondrial respiratory chain complex I assembly / mitochondrial electron transport, NADH to ubiquinone / proton motive force-driven mitochondrial ATP synthesis / respiratory chain complex I / anatomical structure morphogenesis / RNA processing / rescue of stalled ribosome / Mitochondrial protein degradation / cellular response to leukemia inhibitory factor / aerobic respiration / ribosomal large subunit biogenesis / fatty acid binding / mitochondrial membrane / fibrillar center / fatty acid biosynthetic process / cell junction / double-stranded RNA binding / 5S rRNA binding / large ribosomal subunit rRNA binding / small ribosomal subunit rRNA binding / endonuclease activity / mitochondrial inner membrane / negative regulation of translation / rRNA binding / nuclear body / ribosome / structural constituent of ribosome / mitochondrial matrix / protein domain specific binding / translation / ribonucleoprotein complex / nucleotide binding / mRNA binding / apoptotic process / calcium ion binding / nucleolus / mitochondrion / extracellular space / RNA binding / nucleoplasm / nucleus / plasma membrane / cytosol Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.42 Å | ||||||
![]() | Valentin Gese, G. / Cipullo, M. / Rorbach, J. / Hallberg, B.M. | ||||||
Funding support | 1items
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![]() | ![]() Title: GTPBP8 plays a role in mitoribosome formation in human mitochondria. Authors: Miriam Cipullo / Genís Valentín Gesé / Shreekara Gopalakrishna / Annika Krueger / Vivian Lobo / Maria A Pirozhkova / James Marks / Petra Páleníková / Dmitrii Shiriaev / Yong Liu / ...Authors: Miriam Cipullo / Genís Valentín Gesé / Shreekara Gopalakrishna / Annika Krueger / Vivian Lobo / Maria A Pirozhkova / James Marks / Petra Páleníková / Dmitrii Shiriaev / Yong Liu / Jelena Misic / Yu Cai / Minh Duc Nguyen / Abubakar Abdelbagi / Xinping Li / Michal Minczuk / Markus Hafner / Daniel Benhalevy / Aishe A Sarshad / Ilian Atanassov / B Martin Hällberg / Joanna Rorbach / ![]() ![]() ![]() ![]() ![]() Abstract: Mitochondrial gene expression relies on mitoribosomes to translate mitochondrial mRNAs. The biogenesis of mitoribosomes is an intricate process involving multiple assembly factors. Among these ...Mitochondrial gene expression relies on mitoribosomes to translate mitochondrial mRNAs. The biogenesis of mitoribosomes is an intricate process involving multiple assembly factors. Among these factors, GTP-binding proteins (GTPBPs) play important roles. In bacterial systems, numerous GTPBPs are required for ribosome subunit maturation, with EngB being a GTPBP involved in the ribosomal large subunit assembly. In this study, we focus on exploring the function of GTPBP8, the human homolog of EngB. We find that ablation of GTPBP8 leads to the inhibition of mitochondrial translation, resulting in significant impairment of oxidative phosphorylation. Structural analysis of mitoribosomes from GTPBP8 knock-out cells shows the accumulation of mitoribosomal large subunit assembly intermediates that are incapable of forming functional monosomes. Furthermore, fPAR-CLIP analysis reveals that GTPBP8 is an RNA-binding protein that interacts specifically with the mitochondrial ribosome large subunit 16 S rRNA. Our study highlights the role of GTPBP8 as a component of the mitochondrial gene expression machinery involved in mitochondrial large subunit maturation. | ||||||
History |
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Structure visualization
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 | ![]() | 1.8 MB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 2.2 MB | Display | ![]() |
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Full document | ![]() | 2.2 MB | Display | |
Data in XML | ![]() | 220.2 KB | Display | |
Data in CIF | ![]() | 367.4 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 18461MC ![]() 8qrkC ![]() 8qrlC ![]() 8qrmC ![]() 8qrnC ![]() 8qu1C M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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1 |
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Components
+39S ribosomal protein ... , 46 types, 46 molecules 012378FHJKLMNOPQRSWXYZbgijlm56...
-Protein , 6 types, 6 molecules oquvwp
#29: Protein | Mass: 12292.333 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#30: Protein | Mass: 25426.895 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#32: Protein | Mass: 26203.076 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#33: Protein | Mass: 8460.787 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#34: Protein | Mass: 17434.273 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#53: Protein | Mass: 23674.203 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Protein/peptide , 1 types, 1 molecules t
#31: Protein/peptide | Mass: 2400.951 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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-RNA chain , 2 types, 2 molecules AB
#38: RNA chain | Mass: 500019.594 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#39: RNA chain | Mass: 22022.131 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Non-polymers , 3 types, 51 molecules 




#56: Chemical | #57: Chemical | ChemComp-MG / #58: Chemical | ChemComp-PNS / | |
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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: mtLSU assembly intermediate (State 2) / Type: ORGANELLE OR CELLULAR COMPONENT / Entity ID: #1-#55 / Source: NATURAL |
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Source (natural) | Organism: ![]() |
Buffer solution | pH: 7.5 |
Specimen | Embedding applied: YES / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
EM embedding | Material: Ice |
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: TFS KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 3000 nm / Nominal defocus min: 200 nm |
Image recording | Electron dose: 48 e/Å2 / Detector mode: INTEGRATING / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
Image scans | Movie frames/image: 25 / Used frames/image: 1-25 |
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Processing
EM software | Name: EPU / Category: image acquisition | ||||||||||||||||||||||||
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
Particle selection | Num. of particles selected: 404181 | ||||||||||||||||||||||||
3D reconstruction | Resolution: 2.42 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 76796 / Symmetry type: POINT | ||||||||||||||||||||||||
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