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- EMDB-10958: The structure of the small subunit of the mitoribosome from Neuro... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-10958 | |||||||||||||||
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Title | The structure of the small subunit of the mitoribosome from Neurospora crassa | |||||||||||||||
![]() | Composite map made out of following maps: head, body and tail. | |||||||||||||||
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Function / homology | ![]() 3-hydroxyisobutyryl-CoA hydrolase activity / valine catabolic process / nuclear pore inner ring / nuclear pore organization / ATPase inhibitor activity / negative regulation of ATP-dependent activity / positive regulation of translational fidelity / mitochondrial large ribosomal subunit / structural constituent of nuclear pore / mitochondrial small ribosomal subunit ...3-hydroxyisobutyryl-CoA hydrolase activity / valine catabolic process / nuclear pore inner ring / nuclear pore organization / ATPase inhibitor activity / negative regulation of ATP-dependent activity / positive regulation of translational fidelity / mitochondrial large ribosomal subunit / structural constituent of nuclear pore / mitochondrial small ribosomal subunit / mitochondrial translation / superoxide dismutase activity / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / mRNA 5'-UTR binding / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / rRNA binding / ribosome / structural constituent of ribosome / ribonucleoprotein complex / translation / mRNA binding / mitochondrion / RNA binding / metal ion binding / cytoplasm Similarity search - Function | |||||||||||||||
Biological species | ![]() | |||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.85 Å | |||||||||||||||
![]() | Amunts A / Itoh Y / Naschberger A | |||||||||||||||
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 | ![]() | 143.5 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 59.8 KB 59.8 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 14.2 KB | Display | ![]() |
Images | ![]() | 67.8 KB | ||
Masks | ![]() | 244.1 MB | ![]() | |
Others | ![]() ![]() ![]() | 142.6 MB 194.1 MB 194.1 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6yw5MC ![]() 6yweC ![]() 6ywsC ![]() 6ywvC ![]() 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 | Composite map made out of following maps: head, body and tail. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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Projections & Slices |
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Density Histograms |
-Additional map: Consensus map for the SSU of the mitoribosome from Neurospora crassa
File | emd_10958_additional_1.map | ||||||||||||
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Annotation | Consensus map for the SSU of the mitoribosome from Neurospora crassa | ||||||||||||
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Density Histograms |
-Half map: #2
File | emd_10958_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_10958_half_map_2.map | ||||||||||||
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Density Histograms |
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Sample components
+Entire : Mitoribosome of Neurospora crassa
+Supramolecule #1: Mitoribosome of Neurospora crassa
+Macromolecule #1: uS2m
+Macromolecule #2: Mito ribosomal protein S2
+Macromolecule #3: Ribosomal protein S5, mitochondrial
+Macromolecule #4: Mito ribosomal protein S4
+Macromolecule #5: 37S ribosomal protein S5
+Macromolecule #6: Mito ribosomal protein S6
+Macromolecule #7: Ribosomal_S7 domain-containing protein
+Macromolecule #8: 40S ribosomal protein S8
+Macromolecule #9: uS9m
+Macromolecule #10: 37S ribosomal protein S10, mitochondrial
+Macromolecule #11: Mitochondrial ribosomal protein subunit S18
+Macromolecule #12: Mitochondrial 30S ribosomal protein S12
+Macromolecule #13: 40S ribosomal protein S13
+Macromolecule #14: Mitochondrial 40S ribosomal protein MRP2
+Macromolecule #15: Ribosomal protein S15
+Macromolecule #16: Ribosomal protein S16, mitochondrial
+Macromolecule #17: Mitochondrial 37S ribosomal protein S17
+Macromolecule #18: Mito ribosomal protein S18
+Macromolecule #19: Mitochondrial ribosomal protein S19
+Macromolecule #20: Mito ribosomal protein S21
+Macromolecule #21: 37S ribosomal protein S25, mitochondrial
+Macromolecule #22: mS26
+Macromolecule #23: mS27
+Macromolecule #24: Mitochondrial ribosomal protein DAP3
+Macromolecule #25: mS33
+Macromolecule #26: 37S ribosomal protein S24, mitochondrial
+Macromolecule #27: 37S ribosomal protein mrp10, mitochondrial
+Macromolecule #28: DUF1713 domain-containing protein
+Macromolecule #29: IGR domain-containing protein
+Macromolecule #30: Fe superoxide dismutase
+Macromolecule #31: mS42
+Macromolecule #32: mS46
+Macromolecule #33: 3-hydroxyisobutyryl-CoA hydrolase, mitochondrial
+Macromolecule #34: mS47
+Macromolecule #36: IF1
+Macromolecule #35: 16S rRNA
+Macromolecule #37: MAGNESIUM ION
+Macromolecule #38: ADENOSINE-5'-TRIPHOSPHATE
+Macromolecule #39: POTASSIUM 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 nm / Pretreatment - Type: GLOW DISCHARGE | |||||||||||||||||||||
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 |