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- EMDB-47451: Cryo-EM structure of 48 nm repeat of microtubule doublet from T. ... -
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Open data
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Basic information
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Title | Cryo-EM structure of 48 nm repeat of microtubule doublet from T. brucei flagellum | |||||||||
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![]() | flagella / microtubule / MOTOR PROTEIN | |||||||||
Function / homology | ![]() intraciliary transport particle / microtubule anchoring / cilium-dependent cell motility / regulation of cilium beat frequency involved in ciliary motility / axonemal microtubule / negative regulation of microtubule depolymerization / nucleoside-diphosphate kinase / ciliary plasm / nuclear lumen / UTP biosynthetic process ...intraciliary transport particle / microtubule anchoring / cilium-dependent cell motility / regulation of cilium beat frequency involved in ciliary motility / axonemal microtubule / negative regulation of microtubule depolymerization / nucleoside-diphosphate kinase / ciliary plasm / nuclear lumen / UTP biosynthetic process / CTP biosynthetic process / motile cilium / nucleoside diphosphate kinase activity / GTP biosynthetic process / positive regulation of cell motility / post-transcriptional regulation of gene expression / cyclosporin A binding / cortical cytoskeleton / phosphate ion binding / mitotic cytokinesis / axoneme / cilium assembly / alpha-tubulin binding / cytoplasmic microtubule / Hsp70 protein binding / mitotic spindle organization / meiotic cell cycle / RNA polymerase II CTD heptapeptide repeat P3 isomerase activity / RNA polymerase II CTD heptapeptide repeat P6 isomerase activity / peptidylprolyl isomerase / Hsp90 protein binding / structural constituent of cytoskeleton / microtubule cytoskeleton organization / mitotic spindle / protein folding / mitotic cell cycle / microtubule binding / microtubule / cytoskeleton / hydrolase activity / calmodulin binding / ciliary basal body / cilium / ribosome / GTPase activity / calcium ion binding / GTP binding / mitochondrion / nucleoplasm / ATP binding / metal ion binding / nucleus / cytoplasm Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.8 Å | |||||||||
![]() | Xia X / Shimogawa MM / Wang H / Liu S / Wijono A / Langousis G / Kassem AM / Wohlschlegel JA / Hill K / Zhou ZH | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Trypanosome doublet microtubule structures reveal flagellum assembly and motility mechanisms. Authors: Xian Xia / Michelle M Shimogawa / Hui Wang / Samuel Liu / Angeline Wijono / Gerasimos Langousis / Ahmad M Kassem / James A Wohlschlegel / Kent L Hill / Z Hong Zhou / ![]() Abstract: The flagellum of drives the parasite's characteristic screw-like motion and is essential for its replication, transmission, and pathogenesis. However, the molecular details of this process remain ...The flagellum of drives the parasite's characteristic screw-like motion and is essential for its replication, transmission, and pathogenesis. However, the molecular details of this process remain unclear. Here, we present high-resolution (up to 2.8 angstrom) cryo-electron microscopy structures of flagellar doublet microtubules (DMTs). Integrated modeling identified 154 different axonemal proteins inside and outside the DMT and, together with genetic and proteomic interrogation, revealed conserved and trypanosome-specific foundations of flagellum assembly and motility. We captured axonemal dynein motors in their pre-power stroke state. Comparing atomic models between pre- and post-power strokes defined how dynein structural changes drive sliding of adjacent DMTs during flagellar beating. This study illuminates structural dynamics underlying flagellar motility and identifies pathogen-specific proteins to consider for therapeutic interventions targeting neglected diseases. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 231.4 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 119.4 KB 119.4 KB | Display Display | ![]() |
Images | ![]() | 87.4 KB | ||
Filedesc metadata | ![]() | 23.5 KB | ||
Others | ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | 65.2 MB 56.7 MB 43.2 MB 55.7 MB 52.2 MB 65 MB 45 MB 55.7 MB 52.1 MB 43.2 MB 53 MB 56.9 MB 52.9 MB 44.9 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9e2gMC ![]() 9e5cC C: citing same article ( M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Projections & slices | Image control
Images are generated by Spider. generated in cubic-lattice coordinate | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.1 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
+Additional map: part1-7
+Additional map: part2-3
+Additional map: part2-4
+Additional map: part2-5
+Additional map: part2-6
+Additional map: part2-7
+Additional map: part1-2
+Additional map: part1-5
+Additional map: part1-6
+Additional map: part1-4
+Additional map: part1-1
+Additional map: part1-3
+Additional map: part2-1
+Additional map: part2-2
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Sample components
+Entire : Trypanosoma brucei flagellum
+Supramolecule #1: Trypanosoma brucei flagellum
+Macromolecule #1: EF-hand domain-containing family member C2
+Macromolecule #2: EF-hand domain-containing family member C2
+Macromolecule #3: Rib72 protein-like protein
+Macromolecule #4: CMF34/CARP4
+Macromolecule #5: Flagellar protofilament ribbon protein, putative
+Macromolecule #6: Cilia- and flagella-associated protein 53
+Macromolecule #7: Meiosis-specific nuclear structural protein 1
+Macromolecule #8: Nucleoside diphosphate kinase, putative
+Macromolecule #9: Nucleoside diphosphate kinase, putative
+Macromolecule #10: EF-hand domain-containing protein
+Macromolecule #11: EF-hand domain-containing protein
+Macromolecule #12: Cyclic nucleotide-binding domain-containing protein
+Macromolecule #13: TbMIP23
+Macromolecule #14: FAP141
+Macromolecule #15: EF-hand domain-containing protein
+Macromolecule #16: Calpain-like cysteine peptidase, putative
+Macromolecule #17: EF-hand domain-containing protein
+Macromolecule #18: Calcium-binding protein, putative
+Macromolecule #19: EF-hand domain-containing protein
+Macromolecule #20: Peptidyl-prolyl cis-trans isomerase
+Macromolecule #21: EF-hand domain-containing protein
+Macromolecule #22: FAP107/MC11
+Macromolecule #23: T. brucei spp.-specific protein
+Macromolecule #24: FAP95/MC6
+Macromolecule #25: FAP129
+Macromolecule #26: T. brucei spp.-specific protein
+Macromolecule #27: FAP21
+Macromolecule #28: Flagellar associated protein
+Macromolecule #29: TbRib26b
+Macromolecule #30: PACRGA
+Macromolecule #31: PACRGB
+Macromolecule #32: Cilia- and flagella-associated protein 20
+Macromolecule #33: Cilia- and flagella-associated protein 52
+Macromolecule #34: Enkurin domain-containing protein
+Macromolecule #35: Enkurin domain-containing protein
+Macromolecule #36: MC4
+Macromolecule #37: MC5
+Macromolecule #38: CCDC81 HU domain-containing protein
+Macromolecule #39: Cilia- and flagella-associated protein 45
+Macromolecule #40: Trichohyalin-plectin-homology domain-containing protein
+Macromolecule #41: Trichohyalin-plectin-homology domain-containing protein
+Macromolecule #42: STOP axonemal protein
+Macromolecule #43: MC8
+Macromolecule #44: MC3
+Macromolecule #45: FAP90
+Macromolecule #46: PBP36
+Macromolecule #47: Enkurin domain-containing protein
+Macromolecule #48: Enkurin domain-containing protein
+Macromolecule #49: PON3
+Macromolecule #50: PON4
+Macromolecule #51: MC7
+Macromolecule #52: FAP96C/MC15
+Macromolecule #53: FAP96B
+Macromolecule #54: MOP23A
+Macromolecule #55: MOP23B
+Macromolecule #56: MOP23C
+Macromolecule #57: KIAA1430 homologue
+Macromolecule #58: Starmaker
+Macromolecule #59: Tubulin alpha chain
+Macromolecule #60: Tubulin beta chain
+Macromolecule #61: ZINC ION
+Macromolecule #62: GUANOSINE-5'-TRIPHOSPHATE
+Macromolecule #63: MAGNESIUM ION
+Macromolecule #64: GUANOSINE-5'-DIPHOSPHATE
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | filament |
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Sample preparation
Buffer | pH: 7.4 |
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Grid | Model: Quantifoil R2/1 / Material: COPPER / Mesh: 200 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 60 sec. / Pretreatment - Atmosphere: AIR |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | TFS 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 K3 BIOQUANTUM (6k x 4k) / Number grids imaged: 2 / Number real images: 106694 / Average exposure time: 2.0 sec. / Average electron dose: 45.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.4 µm / Nominal defocus min: 1.6 µm / Nominal magnification: 81000 |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
Refinement | Space: REAL / Protocol: AB INITIO MODEL |
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Output model | ![]() PDB-9e2g: |