- PDB-3j9m: Structure of the human mitochondrial ribosome (class 1) -
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Basic information
Entry
Database: PDB / ID: 3j9m
Title
Structure of the human mitochondrial ribosome (class 1)
Components
12S rRNA
16S rRNA
E-site tRNA
Unknown protein/protein extension
bL17m
bL19m
bL20m
bL21m
bL27m
bL28m
bL31m
bL32m
bL33m
bL34m
bL35m
bL36m
bL9m
bS16m
bS18m (bS18c)
bS1m
bS21m
bS6m
mL37
mL38
mL39
mL40
mL41
mL42
mL43
mL44
mL45
mL46
mL48
mL49
mL50
mL51
mL52
mL53
mL54
mL62 (ICT1)
mL63
mL64 (CRIF1)
mL65 (mS30)
mL66 (bS18a)
mS22
mS23
mS25
mS26
mS27
mS29
mS31
mS33
mS34
mS35
mS37
mS38
mS39
mS40 (bS18b)
mt-tRNAVal
uL10m
uL11m
uL13m
uL14m
uL15m
uL16m
uL18m
uL22m
uL23m
uL24m
uL29m
uL2m
uL30m
uL3m
uL4m
uS10m
uS11m
uS12m
uS14m
uS15m
uS17m
uS2m
uS3m
uS5m
uS7m
uS9m
Keywords
RIBOSOME / Mitochondria / translation
Function / homology
Function and homology information
mitochondrial translational termination / mitochondrial ribosome assembly / mitochondrial translational elongation / Mitochondrial translation elongation / Mitochondrial translation termination / translation release factor activity, codon nonspecific / Mitochondrial translation initiation / translation release factor activity / negative regulation of mitotic nuclear division / mitochondrial large ribosomal subunit ...mitochondrial translational termination / mitochondrial ribosome assembly / mitochondrial translational elongation / Mitochondrial translation elongation / Mitochondrial translation termination / translation release factor activity, codon nonspecific / Mitochondrial translation initiation / translation release factor activity / negative regulation of mitotic nuclear division / mitochondrial large ribosomal subunit / peptidyl-tRNA hydrolase / mitochondrial ribosome / Hydrolases; Acting on ester bonds; Endoribonucleases producing 5'-phosphomonoesters / mitochondrial small ribosomal subunit / peptidyl-tRNA hydrolase activity / mitochondrial translation / apoptotic mitochondrial changes / positive regulation of proteolysis / ribosomal small subunit binding / anatomical structure morphogenesis / RNA processing / Mitochondrial protein degradation / rescue of stalled ribosome / cellular response to leukemia inhibitory factor / apoptotic signaling pathway / fibrillar center / cell junction / large ribosomal subunit / double-stranded RNA binding / regulation of translation / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / large ribosomal subunit rRNA binding / endonuclease activity / nuclear membrane / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / tRNA binding / cell population proliferation / mitochondrial inner membrane / negative regulation of translation / rRNA binding / nuclear body / structural constituent of ribosome / ribosome / mitochondrial matrix / translation / ribonucleoprotein complex / protein domain specific binding / nucleotide binding / intracellular membrane-bounded organelle / mRNA binding / apoptotic process / GTP binding / nucleolus / mitochondrion / RNA binding / nucleoplasm / nucleus / plasma membrane / cytosol / cytoplasm Similarity search - Function
Coiled-coil-helix-coiled-coil-helix domain-containing protein 1 / Cysteine alpha-hairpin motif superfamily / 28S ribosomal protein S26 / Mitochondrial ribosome subunit S26 / 28S ribosomal protein S27, mitochondrial / MRPS27/PTCD2 / Mitochondrial 28S ribosomal protein S27 / Ribosomal protein S22, mitochondrial / Ribosomal protein S23, mitochondrial / Ribosomal protein S23/S25, mitochondrial ...Coiled-coil-helix-coiled-coil-helix domain-containing protein 1 / Cysteine alpha-hairpin motif superfamily / 28S ribosomal protein S26 / Mitochondrial ribosome subunit S26 / 28S ribosomal protein S27, mitochondrial / MRPS27/PTCD2 / Mitochondrial 28S ribosomal protein S27 / Ribosomal protein S22, mitochondrial / Ribosomal protein S23, mitochondrial / Ribosomal protein S23/S25, mitochondrial / Mitochondrial 28S ribosomal protein S31 / : / Mitochondrial 28S ribosomal protein S22 / Mitochondrial ribosomal protein S23 / Mitochondrial 28S ribosomal protein S31 / Ribosomal protein S29, mitochondrial / Ribosomal protein S28, mitochondrial / Mitochondrial 28S ribosomal protein S34 / 28S ribosomal protein S10, mitochondrial / Mitochondrial ribosomal protein MRP-S35 / Mitochondrial 28S ribosomal protein S34 / 28S ribosomal protein S24, mitochondrial / Pentatricopeptide repeat domain-containing protein 3 / 28S ribosomal protein S17, mitochondrial / 28S ribosomal protein S18b, mitochondrial / : / : / Mitochondrial ribosome subunit S24 / Small ribosomal subunit protein uS5m, N-terminal / Small ribosomal subunit protein mS39, PPR / 28S ribosomal protein S25, mitochondrial / : / Ribosomal protein L55, mitochondrial / Mitochondrial ribosomal protein L55 superfamily / : / Mitochondrial ribosomal protein L55 / Pentatricopeptide repeat domain / Mitochondrial ribosomal protein L48 / 39S ribosomal protein L40, mitochondrial / Ribosomal protein S27/S33, mitochondrial / Ribosomal protein S24/S35, mitochondrial / Mitochondrial ribosomal subunit S27 / Ribosomal protein S30, mitochondrial / : / Large ribosomal subunit protein bL9m N-terminal domain / Ribosomal protein L53, mitochondrial / 39S ribosomal protein L53/MRP-L53 / 39S ribosomal protein L42, mitochondrial / Mitochondrial 28S ribosomal protein S32 / Ribosomal protein L37, mitochondrial / Ribosomal protein L28/L40, mitochondrial / Mitochondrial ribosomal protein L37 / Mitochondrial ribosomal protein L28 / Ribosomal protein 63, mitochondrial / Growth arrest/ DNA-damage-inducible protein-interacting protein 1 / Ribosomal protein L35, mitochondrial / Ribosomal protein S24/S35, mitochondrial, conserved domain / Ribosomal protein L51, mitochondrial / Growth arrest and DNA-damage-inducible proteins-interacting protein 1 / Mitochondrial ribosomal subunit protein / Mitochondrial ribosomal subunit / Mitochondrial ribosome protein 63 / Ribosomal protein L37/S30 / Growth arrest and DNA damage-inducible proteins-interacting protein 1 domain superfamily / : / : / Mitochondrial 28S ribosomal protein S30 (PDCD9) / 39S ribosomal protein L52, mitochondrial / Mitoribosomal protein mL52 / : / MRPL44, double-stranded RNA binding domain / : / MRPL44 dsRNA-binding domain / Large ribosomal subunit protein mL44, endonuclease domain / : / Large ribosomal subunit protein bL9m C-terminal domain / Tim44-like domain / Tim44-like domain / Tim44 / Pentatricopeptide (PPR) repeat profile. / : / : / Mitochondrial ribosomal protein L46 NUDIX / Ribosomal protein S23/S29, mitochondrial / Mitochondrial ribosomal death-associated protein 3 / Pentatricopeptide repeat / Ribosomal protein L46, N-terminal / 39S mitochondrial ribosomal protein L46 / Ribosomal protein L50, mitochondria / Ribosomal subunit 39S / Ribosomal protein L49/IMG2 / Mitochondrial large subunit ribosomal protein (Img2) / Ribosomal protein L27/L41, mitochondrial / : / Mitochondrial ribosomal protein L27 / Mitochondrial mRNA-processing protein COX24, C-terminal / Mitochondrial mRNA-processing protein COX24, C-terminal / Mitochondrial domain of unknown function (DUF1713) / 39S ribosomal protein L46, mitochondrial / 39S ribosomal protein L43/54S ribosomal protein L51 Similarity search - Domain/homology
GUANOSINE-5'-DIPHOSPHATE / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Large ribosomal subunit protein mL52 / Large ribosomal subunit protein uL18m / Large ribosomal subunit protein uL22m / Small ribosomal subunit protein uS12m / Small ribosomal subunit protein uS14m ...GUANOSINE-5'-DIPHOSPHATE / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Large ribosomal subunit protein mL52 / Large ribosomal subunit protein uL18m / Large ribosomal subunit protein uL22m / Small ribosomal subunit protein uS12m / Small ribosomal subunit protein uS14m / Large ribosomal subunit protein bL33m / Large ribosomal subunit protein uL3m / Large ribosomal subunit protein bL19m / Small ribosomal subunit protein mS29 / Small ribosomal subunit protein mS22 / Small ribosomal subunit protein mS25 / Small ribosomal subunit protein uS10m / Small ribosomal subunit protein mS35 / Small ribosomal subunit protein uS5m / Small ribosomal subunit protein uS11m / Small ribosomal subunit protein uS15m / Small ribosomal subunit protein bS21m / Small ribosomal subunit protein mS34 / Small ribosomal subunit protein bS6m / Small ribosomal subunit protein uS9m / Large ribosomal subunit protein mL49 / Large ribosomal subunit protein mL62 / Large ribosomal subunit protein uL23m / : / Large ribosomal subunit protein mL51 / Large ribosomal subunit protein uL2m / Large ribosomal subunit protein mL54 / Large ribosomal subunit protein uL14m / Large ribosomal subunit protein bL21m / Large ribosomal subunit protein mL55 / Large ribosomal subunit protein uL10m / Large ribosomal subunit protein mL41 / Large ribosomal subunit protein mL50 / Large ribosomal subunit protein mL43 / Large ribosomal subunit protein mL64 / Large ribosomal subunit protein uL30m / Small ribosomal subunit protein mS27 / Small ribosomal subunit protein mS31 / Large ribosomal subunit protein uL24m / Small ribosomal subunit protein mS37 / Large ribosomal subunit protein mL38 / Small ribosomal subunit protein uS3m / Large ribosomal subunit protein mL53 / Small ribosomal subunit protein mS39 / Large ribosomal subunit protein mL48 / Large ribosomal subunit protein bL34m / Large ribosomal subunit protein mL63 / Large ribosomal subunit protein mL45 / Large ribosomal subunit protein bL32m / Large ribosomal subunit protein bL20m / Large ribosomal subunit protein uL13m / Large ribosomal subunit protein bL9m / Large ribosomal subunit protein uL4m / Small ribosomal subunit protein mS26 / Large ribosomal subunit protein mL37 / Large ribosomal subunit protein mL46 / Large ribosomal subunit protein mL44 / Large ribosomal subunit protein uL29m / Large ribosomal subunit protein mL65 / Large ribosomal subunit protein mL40 / Large ribosomal subunit protein bL17m / Large ribosomal subunit protein mL66 / Small ribosomal subunit protein mS38 / Large ribosomal subunit protein uL16m / Large ribosomal subunit protein mL39 / Large ribosomal subunit protein bL35m / Large ribosomal subunit protein uL15m / Large ribosomal subunit protein bL36m / Large ribosomal subunit protein bL27m / Small ribosomal subunit protein mS33 / Small ribosomal subunit protein bS1m / Small ribosomal subunit protein uS17m / Small ribosomal subunit protein uS7m / Small ribosomal subunit protein uS2m / Large ribosomal subunit protein uL11m / Small ribosomal subunit protein bS16m / Small ribosomal subunit protein bS18m / Small ribosomal subunit protein mS23 / Small ribosomal subunit protein mS40 / Large ribosomal subunit protein mL42 Similarity search - Component
Biological species
Homo sapiens (human)
Method
ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.5 Å
Journal: Science / Year: 2015 Title: Ribosome. The structure of the human mitochondrial ribosome. Authors: Alexey Amunts / Alan Brown / Jaan Toots / Sjors H W Scheres / V Ramakrishnan / Abstract: The highly divergent ribosomes of human mitochondria (mitoribosomes) synthesize 13 essential proteins of oxidative phosphorylation complexes. We have determined the structure of the intact ...The highly divergent ribosomes of human mitochondria (mitoribosomes) synthesize 13 essential proteins of oxidative phosphorylation complexes. We have determined the structure of the intact mitoribosome to 3.5 angstrom resolution by means of single-particle electron cryogenic microscopy. It reveals 80 extensively interconnected proteins, 36 of which are specific to mitochondria, and three ribosomal RNA molecules. The head domain of the small subunit, particularly the messenger (mRNA) channel, is highly remodeled. Many intersubunit bridges are specific to the mitoribosome, which adopts conformations involving ratcheting or rolling of the small subunit that are distinct from those seen in bacteria or eukaryotes. An intrinsic guanosine triphosphatase mediates a contact between the head and central protuberance. The structure provides a reference for analysis of mutations that cause severe pathologies and for future drug design.
Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction
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Sample preparation
Component
Name: Human mitochondrial ribosome / Type: RIBOSOME
Molecular weight
Value: 2.7 MDa / Experimental value: NO
Buffer solution
Name: 20 mM HEPES-KOH, pH 7.45, 100 mM KCl, 20 mM MgOAc, 2 mM DTT pH: 7.45 Details: 20 mM HEPES-KOH, pH 7.45, 100 mM KCl, 20 mM MgOAc, 2 mM DTT
Specimen
Conc.: 0.23 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen support
Details: 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). Method: Blot 2.5 seconds before plunging
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Electron microscopy imaging
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
EM imaging
Accelerating voltage: 300 kV / Calibrated magnification: 104478 X / Electron source: FIELD EMISSION GUN / Illumination mode: FLOOD BEAM / Model: FEI TITAN KRIOS / Mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 3500 nm / Nominal defocus min: 1500 nm / Nominal magnification: 59000 X / Temperature (max): 90 K / Temperature (min): 80 K / Specimen holder type: FEI TITAN KRIOS AUTOGRID HOLDER / Specimen-ID: 1 / Temperature: 85 K
ID
Date
1
Apr 3, 2014
2
Apr 11, 2014
3
May 10, 2014
4
May 30, 2014
Image recording
Electron dose: 25 e/Å2 / Film or detector model: FEI FALCON II (4k x 4k) / Num. of real images: 7526 Details: Every image is the average of 17 frames recorded by the direct electron detector.
EM imaging optics
Energyfilter name: FEI
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Processing
Software
Name: REFMAC / Version: 5.8.0091 2014/10/05 / 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
EM software
ID
Name
Version
Category
1
CTFFIND
3
CTFcorrection
2
RELION
3Dreconstruction
Symmetry
Point symmetry: C1 (asymmetric)
3D reconstruction
Resolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 884122 / Nominal pixel size: 1.34 Å / Actual pixel size: 1.34 Å Details: Data were processed in Relion to compensate for beam-induced movement. Symmetry type: POINT
Refinement
Details: Hydrogens have been added in their riding positions
Refinement step
Cycle: LAST
Protein
Nucleic acid
Ligand
Solvent
Total
Num. atoms
106122
52100
162
0
158384
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