+Open data
-Basic information
Entry | Database: PDB / ID: 3j7y | |||||||||
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Title | Structure of the large ribosomal subunit from human mitochondria | |||||||||
Components |
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Keywords | RIBOSOME / mitochondria / large subunit / rRNA / tRNA | |||||||||
Function / homology | Function and homology information rRNA import into mitochondrion / mitochondrial translational termination / mitochondrial translational elongation / translation release factor activity, codon nonspecific / microprocessor complex / Mitochondrial translation elongation / Mitochondrial translation termination / Mitochondrial translation initiation / mitochondrial large ribosomal subunit / Hydrolases; Acting on ester bonds; Endoribonucleases producing 5'-phosphomonoesters ...rRNA import into mitochondrion / mitochondrial translational termination / mitochondrial translational elongation / translation release factor activity, codon nonspecific / microprocessor complex / Mitochondrial translation elongation / Mitochondrial translation termination / Mitochondrial translation initiation / mitochondrial large ribosomal subunit / Hydrolases; Acting on ester bonds; Endoribonucleases producing 5'-phosphomonoesters / peptidyl-tRNA hydrolase / mitochondrial ribosome / mitochondrial small ribosomal subunit / mitochondrial translation / aminoacyl-tRNA hydrolase activity / anatomical structure morphogenesis / RNA processing / Mitochondrial protein degradation / rescue of stalled ribosome / cellular response to leukemia inhibitory factor / fibrillar center / double-stranded RNA binding / small ribosomal subunit rRNA binding / large ribosomal subunit / cell junction / 5S rRNA binding / large ribosomal subunit rRNA binding / endonuclease activity / mitochondrial inner membrane / negative regulation of translation / nuclear body / rRNA binding / ribosome / structural constituent of ribosome / mitochondrial matrix / ribonucleoprotein complex / translation / protein domain specific binding / mRNA binding / nucleotide binding / nucleolus / apoptotic process / mitochondrion / RNA binding / extracellular space / nucleoplasm / nucleus / plasma membrane / cytosol Similarity search - Function | |||||||||
Biological species | Homo sapiens (human) | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å | |||||||||
Authors | Brown, A. / Amunts, A. / Bai, X.C. / Sugimoto, Y. / Edwards, P.C. / Murshudov, G. / Scheres, S.H.W. / Ramakrishnan, V. | |||||||||
Citation | Journal: Science / Year: 2014 Title: Structure of the large ribosomal subunit from human mitochondria. Authors: Alan Brown / Alexey Amunts / Xiao-Chen Bai / Yoichiro Sugimoto / Patricia C Edwards / Garib Murshudov / Sjors H W Scheres / V Ramakrishnan / Abstract: Human mitochondrial ribosomes are highly divergent from all other known ribosomes and are specialized to exclusively translate membrane proteins. They are linked with hereditary mitochondrial ...Human mitochondrial ribosomes are highly divergent from all other known ribosomes and are specialized to exclusively translate membrane proteins. They are linked with hereditary mitochondrial diseases and are often the unintended targets of various clinically useful antibiotics. Using single-particle cryogenic electron microscopy, we have determined the structure of its large subunit to 3.4 angstrom resolution, revealing 48 proteins, 21 of which are specific to mitochondria. The structure unveils an adaptation of the exit tunnel for hydrophobic nascent peptides, extensive remodeling of the central protuberance, including recruitment of mitochondrial valine transfer RNA (tRNA(Val)) to play an integral structural role, and changes in the tRNA binding sites related to the unusual characteristics of mitochondrial tRNAs. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 3j7y.cif.gz | 2.3 MB | Display | PDBx/mmCIF format |
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PDB format | pdb3j7y.ent.gz | 1.8 MB | Display | PDB format |
PDBx/mmJSON format | 3j7y.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 3j7y_validation.pdf.gz | 1.3 MB | Display | wwPDB validaton report |
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Full document | 3j7y_full_validation.pdf.gz | 1.3 MB | Display | |
Data in XML | 3j7y_validation.xml.gz | 187.8 KB | Display | |
Data in CIF | 3j7y_validation.cif.gz | 327.1 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/j7/3j7y ftp://data.pdbj.org/pub/pdb/validation_reports/j7/3j7y | HTTPS FTP |
-Related structure data
Related structure data | 2762MC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
-RNA chain , 2 types, 2 molecules AB
#1: RNA chain | Mass: 500019.594 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HEK293 |
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#2: RNA chain | Mass: 23266.883 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HEK293 |
+Protein , 49 types, 49 molecules DEFHIJKLMNOPQRSTUVWXYZ01234567...
-Non-polymers , 3 types, 70 molecules
#52: Chemical | ChemComp-AMP / | ||
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#53: Chemical | ChemComp-MG / #54: Chemical | |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component |
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Molecular weight | Value: 1.7 MDa / Experimental value: NO | ||||||||||||
Buffer solution | Name: 20 mM HEPES-KOH, pH 7.45, 100 mM potassium chloride, 20 mM magnesium acetate, 2 mM DTT pH: 7.45 Details: 20 mM HEPES-KOH, pH 7.45, 100 mM potassium chloride, 20 mM magnesium acetate, 2 mM DTT | ||||||||||||
Specimen | Conc.: 0.23 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||
Specimen support | Details: 30 seconds on glow-discharged holey carbon grids (Quantifoil R2/2) with home-made continuous carbon film | ||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK II / Cryogen name: ETHANE / Temp: 90 K / Humidity: 100 % Details: Blot 2.5 seconds before plunging into liquid ethane (FEI VITROBOT MARK II). |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS / Date: Apr 12, 2014 |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 59000 X / Calibrated magnification: 104478 X / Nominal defocus max: 3500 nm / Nominal defocus min: 1500 nm |
Specimen holder | Specimen holder type: FEI TITAN KRIOS AUTOGRID HOLDER / Temperature: 85 K / Temperature (max): 90 K / Temperature (min): 80 K |
Image recording | Electron dose: 25 e/Å2 / Film or detector model: FEI FALCON II (4k x 4k) |
Image scans | Num. digital images: 1521 |
Radiation wavelength | Relative weight: 1 |
-Processing
Software | Name: REFMAC / Version: 5.8.0077 2014/05/16 / Classification: refinement / Contact author: Garib N. Murshudov / Contact author email: garib[at]mrc-lmb.cam.ac.uk Description: (un)restrained refinement or idealisation of macromolecular structures | ||||||||||||||||
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EM software |
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CTF correction | Details: Each particle | ||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||
3D reconstruction | Resolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 107679 / Nominal pixel size: 1.34 Å / Actual pixel size: 1.34 Å Details: Final resolution was calculated using a soft mask over the large subunit Refinement type: HALF-MAPS REFINED INDEPENDENTLY / Symmetry type: POINT | ||||||||||||||||
Refinement | Details: HYDROGENS HAVE BEEN ADDED IN THEIR RIDING POSITIONS | ||||||||||||||||
Refinement step | Cycle: LAST
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