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- EMDB-10977: The structure of the Atp25 bound assembly intermediate of the mit... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-10977 | |||||||||||||||
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Title | The structure of the Atp25 bound assembly intermediate of the mitoribosome from Neurospora crassa | |||||||||||||||
![]() | Consensus map for the assembly intermediate with bound Atp25 | |||||||||||||||
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![]() | Neurospora crassa / translating Mitoribosomes / tRNA / mRNA / mL108 / TRANSLATION | |||||||||||||||
Function / homology | ![]() mitochondrial gene expression / mitochondrial genome maintenance / ribonuclease III activity / fungal-type vacuole / mitochondrial proton-transporting ATP synthase complex assembly / DNA strand exchange activity / mitochondrial large ribosomal subunit / mRNA stabilization / mitochondrial translation / RNA processing ...mitochondrial gene expression / mitochondrial genome maintenance / ribonuclease III activity / fungal-type vacuole / mitochondrial proton-transporting ATP synthase complex assembly / DNA strand exchange activity / mitochondrial large ribosomal subunit / mRNA stabilization / mitochondrial translation / RNA processing / large ribosomal subunit / double-stranded RNA binding / single-stranded DNA binding / transferase activity / large ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / rRNA binding / negative regulation of translation / mitochondrial inner membrane / ribosome / structural constituent of ribosome / translation / ribonucleoprotein complex / mRNA binding / mitochondrion / RNA binding / metal ion binding Similarity search - Function | |||||||||||||||
Biological species | ![]() | |||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.03 Å | |||||||||||||||
![]() | Amunts A / Itoh Y | |||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Analysis of translating mitoribosome reveals functional characteristics of translation in mitochondria of fungi. Authors: Yuzuru Itoh / Andreas Naschberger / Narges Mortezaei / Johannes M Herrmann / Alexey Amunts / ![]() ![]() Abstract: Mitoribosomes are specialized protein synthesis machineries in mitochondria. However, how mRNA binds to its dedicated channel, and tRNA moves as the mitoribosomal subunit rotate with respect to each ...Mitoribosomes are specialized protein synthesis machineries in mitochondria. However, how mRNA binds to its dedicated channel, and tRNA moves as the mitoribosomal subunit rotate with respect to each other is not understood. We report models of the translating fungal mitoribosome with mRNA, tRNA and nascent polypeptide, as well as an assembly intermediate. Nicotinamide adenine dinucleotide (NAD) is found in the central protuberance of the large subunit, and the ATPase inhibitory factor 1 (IF) in the small subunit. The models of the active mitoribosome explain how mRNA binds through a dedicated protein platform on the small subunit, tRNA is translocated with the help of the protein mL108, bridging it with L1 stalk on the large subunit, and nascent polypeptide paths through a newly shaped exit tunnel involving a series of structural rearrangements. An assembly intermediate is modeled with the maturation factor Atp25, providing insight into the biogenesis of the mitoribosomal large subunit and translation regulation. | |||||||||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 142.8 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 69.4 KB 69.4 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 14.2 KB | Display | ![]() |
Images | ![]() | 74.7 KB | ||
Masks | ![]() | 244.1 MB | ![]() | |
Filedesc metadata | ![]() | 16.5 KB | ||
Others | ![]() ![]() | 195.3 MB 195.4 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6ywvMC ![]() 6yw5C ![]() 6yweC ![]() 6ywsC ![]() 6ywxC ![]() 6ywyC M: atomic model generated by this map C: citing same article ( |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Consensus map for the assembly intermediate with bound Atp25 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.06 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Mask #1
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Density Histograms |
-Half map: #1
File | emd_10977_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #2
File | emd_10977_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
+Entire : Assembly intermediate of the mitoribosome of Neurospora crassa
+Supramolecule #1: Assembly intermediate of the mitoribosome of Neurospora crassa
+Macromolecule #1: 23 S rRNA
+Macromolecule #2: 60S ribosomal protein L2
+Macromolecule #3: 60S ribosomal protein L3
+Macromolecule #4: 60S ribosomal protein L4, variant
+Macromolecule #5: 50S ribosomal protein L5
+Macromolecule #6: 60S ribosomal protein L6
+Macromolecule #7: Uncharacterized protein
+Macromolecule #8: 60S ribosomal protein L19
+Macromolecule #9: Ribosomal protein L13
+Macromolecule #10: 50S ribosomal protein L14
+Macromolecule #11: 50S ribosomal subunit protein L15
+Macromolecule #12: 60S ribosomal protein L16
+Macromolecule #13: 50S ribosomal protein L17
+Macromolecule #14: Mitochondrial ribosomal protein
+Macromolecule #15: Aconitate hydratase
+Macromolecule #16: Mitochondrial large ribosomal subunit
+Macromolecule #17: Mitochondrial ribosomal protein subunit L23
+Macromolecule #18: KOW domain-containing protein
+Macromolecule #19: Uncharacterized protein
+Macromolecule #20: 50S ribosomal protein L24
+Macromolecule #21: 54S ribosomal protein L4, mitochondrial
+Macromolecule #22: 50S ribosomal protein L30
+Macromolecule #23: Uncharacterized protein
+Macromolecule #24: Mitochondrial ribosomal protein subunit L32
+Macromolecule #25: Uncharacterized protein
+Macromolecule #26: Uncharacterized protein
+Macromolecule #27: Ribosomal protein
+Macromolecule #28: Mitochondrial large ribosomal subunit YmL35
+Macromolecule #29: Uncharacterized protein
+Macromolecule #30: Uncharacterized protein
+Macromolecule #31: Mitochondrial ribosomal protein L43
+Macromolecule #32: 60S ribosomal protein L3
+Macromolecule #33: 50S ribosomal subunit L30
+Macromolecule #34: Uncharacterized protein
+Macromolecule #35: Uncharacterized protein
+Macromolecule #36: Mitochondrial ribosomal protein L44
+Macromolecule #37: Uncharacterized protein
+Macromolecule #38: RNase III domain-containing protein
+Macromolecule #39: 60S ribosomal protein L20
+Macromolecule #40: Mitochondrial 60S ribosomal protein L25
+Macromolecule #41: 54S ribosomal protein L31, mitochondrial
+Macromolecule #42: Uncharacterized protein
+Macromolecule #43: ATPase synthesis protein 25, mitochondrial
+Macromolecule #44: MAGNESIUM ION
+Macromolecule #45: NICOTINAMIDE-ADENINE-DINUCLEOTIDE
+Macromolecule #46: SPERMINE
+Macromolecule #47: POTASSIUM ION
+Macromolecule #48: ZINC ION
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 Component:
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Grid | Model: Quantifoil R2/2 / Material: COPPER / Support film - Material: CARBON / Support film - topology: CONTINUOUS / Support film - Film thickness: 2.7 | |||||||||||||||||||||
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Specialist optics | Energy filter - Name: GIF Quantum LS / Energy filter - Slit width: 20 eV |
Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Digitization - Frames/image: 1-20 / Number real images: 3172 / Average electron dose: 35.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 70.0 µm / Calibrated magnification: 130000 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |