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Yorodumi- PDB-7p2e: Human mitochondrial ribosome small subunit in complex with IF3, G... -
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Open data
- Basic information
Basic information
| Entry | Database: PDB / ID: 7p2e | ||||||||||||
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| Title | Human mitochondrial ribosome small subunit in complex with IF3, GMPPMP and streptomycin | ||||||||||||
|  Components | 
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|  Keywords | RIBOSOME / Initiation factor 3 / translation / antibiotic / streptomycin | ||||||||||||
| Function / homology |  Function and homology information mitochondrial translational initiation / translation factor activity, RNA binding / mitochondrial ribosome assembly / Mitochondrial translation elongation / Mitochondrial translation termination / Mitochondrial translation initiation / negative regulation of mitotic nuclear division / mitochondrial ribosome / mitochondrial small ribosomal subunit / ribosome disassembly ...mitochondrial translational initiation / translation factor activity, RNA binding / mitochondrial ribosome assembly / Mitochondrial translation elongation / Mitochondrial translation termination / Mitochondrial translation initiation / negative regulation of mitotic nuclear division / mitochondrial ribosome / mitochondrial small ribosomal subunit / ribosome disassembly / mitochondrial translation / apoptotic mitochondrial changes / positive regulation of proteolysis / ribosomal small subunit binding / translation initiation factor activity / Mitochondrial protein degradation / apoptotic signaling pathway / fibrillar center / cell junction / regulation of translation / ribosome binding / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / nuclear membrane / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / tRNA binding / cell population proliferation / mitochondrial inner membrane / rRNA binding / structural constituent of ribosome / ribosome / translation / mitochondrial matrix / protein domain specific binding / intracellular membrane-bounded organelle / mRNA binding / GTP binding / nucleolus / mitochondrion / 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: 2.4 Å | ||||||||||||
|  Authors | Itoh, Y. / Khawaja, A. / Singh, V. / Rorbach, J. / Amunts, A. | ||||||||||||
| Funding support |  Sweden, 2items 
 | ||||||||||||
|  Citation |  Journal: Elife / Year: 2022 Title: Structure of the mitoribosomal small subunit with streptomycin reveals Fe-S clusters and physiological molecules. Authors: Yuzuru Itoh / Vivek Singh / Anas Khawaja / Andreas Naschberger / Minh Duc Nguyen / Joanna Rorbach / Alexey Amunts /  Abstract: The mitoribosome regulates cellular energy production, and its dysfunction is associated with aging. Inhibition of the mitoribosome can be caused by off-target binding of antimicrobial drugs and was ...The mitoribosome regulates cellular energy production, and its dysfunction is associated with aging. Inhibition of the mitoribosome can be caused by off-target binding of antimicrobial drugs and was shown to be coupled with a bilateral decreased visual acuity. Previously, we reported mitochondria-specific protein aspects of the mitoribosome, and in this article we present a 2.4-Å resolution structure of the small subunit in a complex with the anti-tuberculosis drug streptomycin that reveals roles of non-protein components. We found iron-sulfur clusters that are coordinated by different mitoribosomal proteins, nicotinamide adenine dinucleotide (NAD) associated with rRNA insertion, and posttranslational modifications. This is the first evidence of inter-protein coordination of iron-sulfur, and the finding of iron-sulfur clusters and NAD as fundamental building blocks of the mitoribosome directly links to mitochondrial disease and aging. We also report details of streptomycin interactions, suggesting that the mitoribosome-bound streptomycin is likely to be in hydrated gem-diol form and can be subjected to other modifications by the cellular milieu. The presented approach of adding antibiotics to cultured cells can be used to define their native structures in a bound form under more physiological conditions, and since streptomycin is a widely used drug for treatment, the newly resolved features can serve as determinants for targeting. | ||||||||||||
| History | 
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- Structure visualization
Structure visualization
| Structure viewer | Molecule:  Molmil  Jmol/JSmol | 
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- Downloads & links
Downloads & links
- Download
Download
| PDBx/mmCIF format |  7p2e.cif.gz | 3.1 MB | Display |  PDBx/mmCIF format | 
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| PDB format |  pdb7p2e.ent.gz | Display |  PDB format | |
| PDBx/mmJSON format |  7p2e.json.gz | Tree view |  PDBx/mmJSON format | |
| Others |  Other downloads | 
-Validation report
| Summary document |  7p2e_validation.pdf.gz | 1.8 MB | Display |  wwPDB validaton report | 
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| Full document |  7p2e_full_validation.pdf.gz | 1.8 MB | Display | |
| Data in XML |  7p2e_validation.xml.gz | 164.5 KB | Display | |
| Data in CIF |  7p2e_validation.cif.gz | 285.3 KB | Display | |
| Arichive directory |  https://data.pdbj.org/pub/pdb/validation_reports/p2/7p2e  ftp://data.pdbj.org/pub/pdb/validation_reports/p2/7p2e | HTTPS FTP | 
-Related structure data
| Related structure data |  13170MC M: map data used to model this data C: citing same article ( | 
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| Similar structure data | Similarity search - Function & homology  F&H Search | 
- Links
Links
- Assembly
Assembly
| Deposited unit |  
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| 1 | 
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- Components
Components
-RNA chain , 1 types, 1 molecules A
| #1: RNA chain | Mass: 306547.531 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: cell / Source: (natural)   Homo sapiens (human) | 
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+28S ribosomal protein  ... , 27 types, 27 molecules BCDEFGHIJKLMNOPQRSTUVWXYZ01                          
-Protein , 4 types, 4 molecules 2348   
| #29: Protein | Mass: 13409.661 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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| #30: 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 | 
| #31: 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 | 
| #32: Protein | Mass: 32545.461 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: Natural variant Thr68Ile and Phe263Leu / Source: (gene. exp.)  Homo sapiens (human) / Description: cell / Gene: MTIF3, DC38 / Production host:  Homo sapiens (human) / References: UniProt: Q9H2K0 | 
-Non-polymers , 10 types, 3176 molecules 


















| #33: Chemical | ChemComp-NAD / | ||||||||||||
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| #34: Chemical | ChemComp-SPM / | ||||||||||||
| #35: Chemical | ChemComp-5I0 / [( | ||||||||||||
| #36: Chemical | ChemComp-K / #37: Chemical | ChemComp-MG / #38: Chemical | ChemComp-ZN / | #39: Chemical | #40: Chemical | ChemComp-ATP / | #41: Chemical | ChemComp-GNP / | #42: Water | ChemComp-HOH / |  | 
-Details
| Has ligand of interest | Y | 
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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 | 
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| Molecular weight | Experimental value: NO | ||||||||||||||||||||||||||||||
| Source (natural) | 
 | ||||||||||||||||||||||||||||||
| Source (recombinant) | Organism:  Homo sapiens (human) | ||||||||||||||||||||||||||||||
| Buffer solution | pH: 7.5 | ||||||||||||||||||||||||||||||
| Buffer component | 
 | ||||||||||||||||||||||||||||||
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||||||||
| Specimen support | Grid material: COPPER / Grid type: Quantifoil R2/1 | ||||||||||||||||||||||||||||||
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 297 K | 
- 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: FLOOD BEAM | 
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 4000 nm / Nominal defocus min: 500 nm / Cs: 2.7 mm / C2 aperture diameter: 70 µm | 
| Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER | 
| Image recording | Average exposure time: 4 sec. / Electron dose: 30 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of real images: 31773 | 
| EM imaging optics | Energyfilter name: GIF Quantum LS / Energyfilter slit width: 20 eV | 
| Image scans | Movie frames/image: 20 / Used frames/image: 1-20 | 
- Processing
Processing
| EM software | 
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||
| Particle selection | Num. of particles selected: 2487123 | ||||||||||||||||||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 2.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 885199 / Algorithm: BACK PROJECTION / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||
| Atomic model building | Space: REAL | ||||||||||||||||||||||||||||||||||||
| Atomic model building | PDB-ID: 6RW4 Accession code: 6RW4 / Source name: PDB / Type: experimental model | 
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