[English] 日本語
![](img/lk-miru.gif)
- EMDB-13967: Cryo-EM structure of the human mtLSU assembly intermediate upon M... -
+
Open data
-
Basic information
Entry | ![]() | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Title | Cryo-EM structure of the human mtLSU assembly intermediate upon MRM2 depletion - class 4 | |||||||||
![]() | ||||||||||
![]() |
| |||||||||
Function / homology | ![]() negative regulation of mitochondrial translation / mitochondrial large ribosomal subunit assembly / negative regulation of ribosome biogenesis / protein lipoylation / Mitochondrial Fatty Acid Beta-Oxidation / Protein lipoylation / rRNA import into mitochondrion / mitochondrial translational elongation / iron-sulfur cluster assembly complex / microprocessor complex ...negative regulation of mitochondrial translation / mitochondrial large ribosomal subunit assembly / negative regulation of ribosome biogenesis / protein lipoylation / Mitochondrial Fatty Acid Beta-Oxidation / Protein lipoylation / rRNA import into mitochondrion / mitochondrial translational elongation / iron-sulfur cluster assembly complex / microprocessor complex / Mitochondrial translation elongation / Mitochondrial translation termination / positive regulation of mitochondrial translation / Mitochondrial translation initiation / mitochondrial large ribosomal subunit binding / mitochondrial fission / mitochondrial large ribosomal subunit / Hydrolases; Acting on ester bonds; Endoribonucleases producing 5'-phosphomonoesters / [2Fe-2S] cluster assembly / mitochondrial small ribosomal subunit / iron-sulfur cluster assembly / mitochondrial ribosome / mitochondrial translation / ribosomal large subunit binding / acyl binding / Complex I biogenesis / acyl carrier activity / Respiratory electron transport / RNA processing / mitochondrial respiratory chain complex I assembly / : / ribosomal large subunit biogenesis / mitochondrial electron transport, NADH to ubiquinone / proton motive force-driven mitochondrial ATP synthesis / cellular response to leukemia inhibitory factor / Mitochondrial protein degradation / fatty acid binding / mitochondrial membrane / aerobic respiration / fatty acid biosynthetic process / double-stranded RNA binding / small ribosomal subunit rRNA binding / 5S rRNA binding / endonuclease activity / nuclear body / rRNA binding / negative regulation of translation / mitochondrial inner membrane / ribosome / structural constituent of ribosome / mitochondrial matrix / translation / ribonucleoprotein complex / protein domain specific binding / mRNA binding / nucleotide binding / calcium ion binding / apoptotic process / mitochondrion / RNA binding / extracellular space / nucleoplasm / nucleus / plasma membrane / cytosol Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.89 Å | |||||||||
![]() | Rebelo-Guiomar P / Pellegrino S / Dent KC / Warren AJ / Minczuk M | |||||||||
Funding support | ![]()
| |||||||||
![]() | ![]() Title: A late-stage assembly checkpoint of the human mitochondrial ribosome large subunit. Authors: Pedro Rebelo-Guiomar / Simone Pellegrino / Kyle C Dent / Aldema Sas-Chen / Leonor Miller-Fleming / Caterina Garone / Lindsey Van Haute / Jack F Rogan / Adam Dinan / Andrew E Firth / Byron ...Authors: Pedro Rebelo-Guiomar / Simone Pellegrino / Kyle C Dent / Aldema Sas-Chen / Leonor Miller-Fleming / Caterina Garone / Lindsey Van Haute / Jack F Rogan / Adam Dinan / Andrew E Firth / Byron Andrews / Alexander J Whitworth / Schraga Schwartz / Alan J Warren / Michal Minczuk / ![]() ![]() ![]() Abstract: Many cellular processes, including ribosome biogenesis, are regulated through post-transcriptional RNA modifications. Here, a genome-wide analysis of the human mitochondrial transcriptome shows that ...Many cellular processes, including ribosome biogenesis, are regulated through post-transcriptional RNA modifications. Here, a genome-wide analysis of the human mitochondrial transcriptome shows that 2'-O-methylation is limited to residues of the mitoribosomal large subunit (mtLSU) 16S mt-rRNA, introduced by MRM1, MRM2 and MRM3, with the modifications installed by the latter two proteins being interdependent. MRM2 controls mitochondrial respiration by regulating mitoribosome biogenesis. In its absence, mtLSU particles (visualized by cryo-EM at the resolution of 2.6 Å) present disordered RNA domains, partial occupancy of bL36m and bound MALSU1:L0R8F8:mtACP anti-association module, allowing five mtLSU biogenesis intermediates with different intersubunit interface configurations to be placed along the assembly pathway. However, mitoribosome biogenesis does not depend on the methyltransferase activity of MRM2. Disruption of the MRM2 Drosophila melanogaster orthologue leads to mitochondria-related developmental arrest. This work identifies a key checkpoint during mtLSU assembly, essential to maintain mitochondrial homeostasis. | |||||||||
History |
|
-
Structure visualization
Supplemental images |
---|
-
Downloads & links
-EMDB archive
Map data | ![]() | 139.8 MB | ![]() | |
---|---|---|---|---|
Header (meta data) | ![]() ![]() | 58.9 KB 58.9 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 12.7 KB | Display | ![]() |
Images | ![]() | 77.6 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7qh7MC ![]() 7qh6C C: citing same article ( M: atomic model generated by this map |
---|---|
Similar structure data | Similarity search - Function & homology ![]() |
-
Links
EMDB pages | ![]() ![]() |
---|---|
Related items in Molecule of the Month |
-
Map
File | ![]() | ||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.06 Å | ||||||||||||||||||||||||||||||||||||
Density |
| ||||||||||||||||||||||||||||||||||||
Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
|
-Supplemental data
-
Sample components
+Entire : Human mitochondrial ribosome large subunit
+Supramolecule #1: Human mitochondrial ribosome large subunit
+Macromolecule #1: 39S ribosomal protein L2, mitochondrial
+Macromolecule #2: 39S ribosomal protein L3, mitochondrial
+Macromolecule #3: 39S ribosomal protein L4, mitochondrial
+Macromolecule #4: 39S ribosomal protein L9, mitochondrial
+Macromolecule #5: 39S ribosomal protein L10, mitochondrial
+Macromolecule #6: 39S ribosomal protein L13, mitochondrial
+Macromolecule #7: 39S ribosomal protein L14, mitochondrial
+Macromolecule #8: 39S ribosomal protein L15, mitochondrial
+Macromolecule #9: 39S ribosomal protein L16, mitochondrial
+Macromolecule #10: 39S ribosomal protein L17, mitochondrial
+Macromolecule #11: 39S ribosomal protein L18, mitochondrial
+Macromolecule #12: 39S ribosomal protein L19, mitochondrial
+Macromolecule #13: 39S ribosomal protein L20, mitochondrial
+Macromolecule #14: 39S ribosomal protein L21, mitochondrial
+Macromolecule #15: 39S ribosomal protein L22, mitochondrial
+Macromolecule #16: 39S ribosomal protein L23, mitochondrial
+Macromolecule #17: 39S ribosomal protein L24, mitochondrial
+Macromolecule #18: 39S ribosomal protein L27, mitochondrial
+Macromolecule #19: 39S ribosomal protein L28, mitochondrial
+Macromolecule #20: 39S ribosomal protein L47, mitochondrial
+Macromolecule #21: 39S ribosomal protein L30, mitochondrial
+Macromolecule #22: 39S ribosomal protein L32, mitochondrial
+Macromolecule #23: 39S ribosomal protein L33, mitochondrial
+Macromolecule #24: 39S ribosomal protein L34, mitochondrial
+Macromolecule #25: 39S ribosomal protein L35, mitochondrial
+Macromolecule #26: 39S ribosomal protein L37, mitochondrial
+Macromolecule #27: 39S ribosomal protein L38, mitochondrial
+Macromolecule #28: 39S ribosomal protein L39, mitochondrial
+Macromolecule #29: 39S ribosomal protein L41, mitochondrial
+Macromolecule #30: 39S ribosomal protein L42, mitochondrial
+Macromolecule #31: 39S ribosomal protein L43, mitochondrial
+Macromolecule #32: 39S ribosomal protein L44, mitochondrial
+Macromolecule #33: 39S ribosomal protein L45, mitochondrial
+Macromolecule #34: 39S ribosomal protein L48, mitochondrial
+Macromolecule #35: 39S ribosomal protein L49, mitochondrial
+Macromolecule #36: 39S ribosomal protein L50, mitochondrial
+Macromolecule #37: 39S ribosomal protein L51, mitochondrial
+Macromolecule #38: 39S ribosomal protein L52, mitochondrial
+Macromolecule #39: Ribosomal protein 63, mitochondrial
+Macromolecule #40: Peptidyl-tRNA hydrolase ICT1, mitochondrial
+Macromolecule #41: Growth arrest and DNA damage-inducible proteins-interacting protein 1
+Macromolecule #42: 39S ribosomal protein S18a, mitochondrial
+Macromolecule #43: 39S ribosomal protein S30, mitochondrial
+Macromolecule #44: Mitochondrial assembly of ribosomal large subunit protein 1
+Macromolecule #45: MIEF1 upstream open reading frame protein
+Macromolecule #46: Acyl carrier protein, mitochondrial
+Macromolecule #49: 39S ribosomal protein L36, mitochondrial
+Macromolecule #47: 16S ribosomal RNA
+Macromolecule #48: mitochondrial tRNAVal
+Macromolecule #50: MAGNESIUM ION
+Macromolecule #51: ZINC ION
+Macromolecule #52: water
-Experimental details
-Structure determination
Method | cryo EM |
---|---|
![]() | single particle reconstruction |
Aggregation state | particle |
-
Sample preparation
Buffer | pH: 7.4 |
---|---|
Grid | Model: Quantifoil R2/2 / Material: COPPER / Mesh: 300 / Pretreatment - Type: GLOW DISCHARGE |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277.15 K / Instrument: FEI VITROBOT MARK IV |
-
Electron microscopy
Microscope | FEI TITAN KRIOS |
---|---|
Image recording | Film or detector model: FEI FALCON III (4k x 4k) / Detector mode: INTEGRATING / Average electron dose: 52.5 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.6 µm / Nominal defocus min: 1.0 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |