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- EMDB-52730: NEDD1-bound native vertebrate gamma-tubulin ring complex from Xen... -
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Open data
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Basic information
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Title | NEDD1-bound native vertebrate gamma-tubulin ring complex from Xenopus laevis | ||||||||||||||||||||||||
![]() | Local resolution-filtered map of the NEDD1-bound native vertebrate gamma-tubulin ring complex from Xenopus laevis | ||||||||||||||||||||||||
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![]() | cytoskeleton / microtubule / microtubule nucleation / complex / template / cap / gamma-tubulin / gamma-tubulin ring complex / cell cycle / nedd1 / neural precursor cell-expressed developmentally down-regulated 1 | ||||||||||||||||||||||||
Function / homology | ![]() microtubule minus-end binding / microtubule nucleation by interphase microtubule organizing center / gamma-tubulin complex localization / microtubule nucleator activity / polar microtubule / interphase microtubule organizing center / gamma-tubulin complex / gamma-tubulin ring complex / mitotic spindle microtubule / meiotic spindle organization ...microtubule minus-end binding / microtubule nucleation by interphase microtubule organizing center / gamma-tubulin complex localization / microtubule nucleator activity / polar microtubule / interphase microtubule organizing center / gamma-tubulin complex / gamma-tubulin ring complex / mitotic spindle microtubule / meiotic spindle organization / dense body / microtubule nucleation / gamma-tubulin binding / mitotic sister chromatid segregation / mitotic spindle assembly / spindle assembly / cytoplasmic microtubule organization / centriole / tubulin binding / mitotic spindle organization / meiotic cell cycle / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / spindle / spindle pole / mitotic cell cycle / actin cytoskeleton / microtubule / cytoskeleton / hydrolase activity / ciliary basal body / focal adhesion / centrosome / GTP binding / ATP binding / nucleus / plasma membrane / cytoplasm Similarity search - Function | ||||||||||||||||||||||||
Biological species | ![]() | ||||||||||||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 4.6 Å | ||||||||||||||||||||||||
![]() | Vermeulen BJA / Pfeffer S | ||||||||||||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural mechanisms for centrosomal recruitment and organization of the microtubule nucleator γ-TuRC. Authors: Qi Gao / Florian W Hofer / Sebastian Filbeck / Bram J A Vermeulen / Martin Würtz / Annett Neuner / Charlotte Kaplan / Maja Zezlina / Cornelia Sala / Hyesu Shin / Oliver J Gruss / Elmar ...Authors: Qi Gao / Florian W Hofer / Sebastian Filbeck / Bram J A Vermeulen / Martin Würtz / Annett Neuner / Charlotte Kaplan / Maja Zezlina / Cornelia Sala / Hyesu Shin / Oliver J Gruss / Elmar Schiebel / Stefan Pfeffer / ![]() Abstract: The γ-tubulin ring complex (γ-TuRC) acts as a structural template for microtubule formation at centrosomes, associating with two main compartments: the pericentriolar material and the centriole ...The γ-tubulin ring complex (γ-TuRC) acts as a structural template for microtubule formation at centrosomes, associating with two main compartments: the pericentriolar material and the centriole lumen. In the pericentriolar material, the γ-TuRC is involved in microtubule organization, while the function of the centriole lumenal pool remains unclear. The conformational landscape of the γ-TuRC, which is crucial for its activity, and its centrosomal anchoring mechanisms, which determine γ-TuRC activity and turnover, are not understood. Using cryo-electron tomography, we analyze γ-TuRCs in human cells and purified centrosomes. Pericentriolar γ-TuRCs simultaneously associate with the essential adapter NEDD1 and the microcephaly protein CDK5RAP2. NEDD1 forms a tetrameric structure at the γ-TuRC base through interactions with four GCP3/MZT1 modules and GCP5/6-specific extensions, while multiple copies of CDK5RAP2 engage the γ-TuRC in two distinct binding patterns to promote γ-TuRC closure and activation. In the centriole lumen, the microtubule branching factor Augmin tethers a condensed cluster of γ-TuRCs to the centriole wall with defined directional orientation. Centriole-lumenal γ-TuRC-Augmin is protected from degradation during interphase and released in mitosis to aid chromosome alignment. This study provides a unique view on γ-TuRC structure and molecular organization at centrosomes and identifies an important cellular function of centriole-lumenal γ-TuRCs. | ||||||||||||||||||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 118.8 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 32.2 KB 32.2 KB | Display Display | ![]() |
Images | ![]() | 80.1 KB | ||
Filedesc metadata | ![]() | 10.4 KB | ||
Others | ![]() ![]() ![]() | 196.4 MB 171.1 MB 171 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9i8nMC ![]() 9i8gC ![]() 9i8hC ![]() 9i8mC M: atomic model generated by this map C: citing same article ( |
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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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Annotation | Local resolution-filtered map of the NEDD1-bound native vertebrate gamma-tubulin ring complex from Xenopus laevis | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.4267 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Additional map: OccuPy-weighted local resolution-filtered map of the NEDD1-bound native...
File | emd_52730_additional_1.map | ||||||||||||
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Annotation | OccuPy-weighted local resolution-filtered map of the NEDD1-bound native vertebrate gamma-tubulin ring complex from Xenopus laevis | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Half map 1 of the NEDD1-bound native vertebrate...
File | emd_52730_half_map_1.map | ||||||||||||
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Annotation | Half map 1 of the NEDD1-bound native vertebrate gamma-tubulin ring complex from Xenopus laevis | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Half map 2 of the NEDD1-bound native vertebrate...
File | emd_52730_half_map_2.map | ||||||||||||
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Annotation | Half map 2 of the NEDD1-bound native vertebrate gamma-tubulin ring complex from Xenopus laevis | ||||||||||||
Projections & Slices |
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Density Histograms |
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Sample components
+Entire : Tetramer of NEDD1 bound to the gamma-tubulin ring complex
+Supramolecule #1: Tetramer of NEDD1 bound to the gamma-tubulin ring complex
+Macromolecule #1: Gamma-tubulin complex component
+Macromolecule #2: Gamma-tubulin complex component 3 homolog
+Macromolecule #3: Gamma-tubulin complex component
+Macromolecule #4: Gamma-tubulin complex component
+Macromolecule #5: Gamma-tubulin complex component 6
+Macromolecule #6: Actin, cytoplasmic 1
+Macromolecule #7: NEDD1 gamma-tubulin ring complex targeting factor L homeolog
+Macromolecule #8: Tubulin gamma-1 chain
+Macromolecule #9: Mitotic-spindle organizing protein 1
-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: 8 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | TFS KRIOS |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 51.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 3.0 µm / Nominal defocus min: 1.0 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Startup model | Type of model: EMDB MAP EMDB ID: Details: The reference contains no density for the NEDD1/N-GCP/MZT1 grapnel and density for the GRIP2 domains and gamma-tubulins at spokes 5 and 6 was removed |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 4.6 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 299022 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |
-Atomic model buiding 1
Refinement | Space: REAL / Protocol: FLEXIBLE FIT |
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Output model | ![]() PDB-9i8n: |