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Yorodumi- 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 | ||||||||||||||||||||||||
Map data | Local resolution-filtered map of the NEDD1-bound native vertebrate gamma-tubulin ring complex from Xenopus laevis | ||||||||||||||||||||||||
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Keywords | 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 | Function and homology informationmicrotubule 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 / microtubule nucleation / dense body / 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 | ||||||||||||||||||||||||
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| Method | single particle reconstruction / cryo EM / Resolution: 4.6 Å | ||||||||||||||||||||||||
Authors | Vermeulen BJA / Pfeffer S | ||||||||||||||||||||||||
| Funding support | Germany, 7 items
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Citation | Journal: Nat Commun / Year: 2025Title: 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. | ||||||||||||||||||||||||
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Structure visualization
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_52730.map.gz | 118.8 MB | EMDB map data format | |
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| Header (meta data) | emd-52730-v30.xml emd-52730.xml | 32.2 KB 32.2 KB | Display Display | EMDB header |
| Images | emd_52730.png | 80.1 KB | ||
| Filedesc metadata | emd-52730.cif.gz | 10.4 KB | ||
| Others | emd_52730_additional_1.map.gz emd_52730_half_map_1.map.gz emd_52730_half_map_2.map.gz | 196.4 MB 171.1 MB 171 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-52730 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-52730 | HTTPS FTP |
-Validation report
| Summary document | emd_52730_validation.pdf.gz | 816 KB | Display | EMDB validaton report |
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| Full document | emd_52730_full_validation.pdf.gz | 815.6 KB | Display | |
| Data in XML | emd_52730_validation.xml.gz | 15.4 KB | Display | |
| Data in CIF | emd_52730_validation.cif.gz | 18.5 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-52730 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-52730 | 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 F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_52730.map.gz / Format: CCP4 / Size: 216 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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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 | ||||||||||||
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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 | ||||||||||||
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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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Processing | 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: FIELD EMISSION GUN |
| 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: |
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About Yorodumi



Keywords
Authors
Germany, 7 items
Citation



















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FIELD EMISSION GUN

