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Yorodumi- EMDB-14013: Structure of recombinant human gamma-Tubulin Ring Complex 12-spok... -
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Open data
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Basic information
| Entry | Database: EMDB / ID: EMD-14013 | |||||||||
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| Title | Structure of recombinant human gamma-Tubulin Ring Complex 12-spoked assembly intermediate (spokes 3-14, substoichiometric spokes 1-2) | |||||||||
Map data | 12-spoked assembly intermediate of the gamma-Tubulin Ring Complex (spokes 3-14, substoichiometric 1-2) | |||||||||
Sample |
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Keywords | Assembly / Intermediate / Complex / CYTOSOLIC PROTEIN | |||||||||
| Function / homology | Function and homology informationmicrotubule 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 ...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 / gamma-tubulin binding / non-motile cilium / pericentriolar material / cell leading edge / microtubule organizing center / mitotic sister chromatid segregation / mitotic spindle assembly / single fertilization / spindle assembly / cytoplasmic microtubule / cytoplasmic microtubule organization / centriole / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / Recruitment of mitotic centrosome proteins and complexes / Recruitment of NuMA to mitotic centrosomes / Anchoring of the basal body to the plasma membrane / AURKA Activation by TPX2 / condensed nuclear chromosome / mitotic spindle organization / meiotic cell cycle / brain development / recycling endosome / structural constituent of cytoskeleton / microtubule cytoskeleton organization / spindle / neuron migration / apical part of cell / spindle pole / Regulation of PLK1 Activity at G2/M Transition / mitotic cell cycle / microtubule cytoskeleton / protein-containing complex assembly / microtubule binding / microtubule / neuron projection / cilium / ciliary basal body / centrosome / GTP binding / structural molecule activity / nucleoplasm / identical protein binding / nucleus / membrane / cytoplasm / cytosol Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 8.7 Å | |||||||||
Authors | Zupa E / Pfeffer S | |||||||||
| Funding support | Germany, 2 items
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Citation | Journal: Nat Commun / Year: 2022Title: Modular assembly of the principal microtubule nucleator γ-TuRC. Authors: Martin Würtz / Erik Zupa / Enrico S Atorino / Annett Neuner / Anna Böhler / Ariani S Rahadian / Bram J A Vermeulen / Giulia Tonon / Sebastian Eustermann / Elmar Schiebel / Stefan Pfeffer / ![]() Abstract: The gamma-tubulin ring complex (γ-TuRC) is the principal microtubule nucleation template in vertebrates. Recent cryo-EM reconstructions visualized the intricate quaternary structure of the γ-TuRC, ...The gamma-tubulin ring complex (γ-TuRC) is the principal microtubule nucleation template in vertebrates. Recent cryo-EM reconstructions visualized the intricate quaternary structure of the γ-TuRC, containing more than thirty subunits, raising fundamental questions about γ-TuRC assembly and the role of actin as an integral part of the complex. Here, we reveal the structural mechanism underlying modular γ-TuRC assembly and identify a functional role of actin in microtubule nucleation. During γ-TuRC assembly, a GCP6-stabilized core comprising GCP2-3-4-5-4-6 is expanded by stepwise recruitment, selective stabilization and conformational locking of four pre-formed GCP2-GCP3 units. Formation of the lumenal bridge specifies incorporation of the terminal GCP2-GCP3 unit and thereby leads to closure of the γ-TuRC ring in a left-handed spiral configuration. Actin incorporation into the complex is not relevant for γ-TuRC assembly and structural integrity, but determines γ-TuRC geometry and is required for efficient microtubule nucleation and mitotic chromosome alignment in vivo. | |||||||||
| History |
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Structure visualization
| Movie |
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| Structure viewer | EM map: SurfView Molmil Jmol/JSmol |
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_14013.map.gz | 3.1 MB | EMDB map data format | |
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| Header (meta data) | emd-14013-v30.xml emd-14013.xml | 28.7 KB 28.7 KB | Display Display | EMDB header |
| Images | emd_14013.png | 114.5 KB | ||
| Filedesc metadata | emd-14013.cif.gz | 10.1 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-14013 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-14013 | HTTPS FTP |
-Validation report
| Summary document | emd_14013_validation.pdf.gz | 392.8 KB | Display | EMDB validaton report |
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| Full document | emd_14013_full_validation.pdf.gz | 392.4 KB | Display | |
| Data in XML | emd_14013_validation.xml.gz | 5.8 KB | Display | |
| Data in CIF | emd_14013_validation.cif.gz | 6.6 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-14013 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-14013 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 7qj8MC ![]() 7qj0C ![]() 7qj1C ![]() 7qj2C ![]() 7qj3C ![]() 7qj4C ![]() 7qj5C ![]() 7qj6C ![]() 7qj7C ![]() 7qj9C ![]() 7qjaC ![]() 7qjbC ![]() 7qjcC ![]() 7qjdC ![]() 7qjeC 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 | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_14013.map.gz / Format: CCP4 / Size: 30.5 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Annotation | 12-spoked assembly intermediate of the gamma-Tubulin Ring Complex (spokes 3-14, substoichiometric 1-2) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 2.66 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
+Entire : Recombinant human Gamma-Tubulin Ring Complex
+Supramolecule #1: Recombinant human Gamma-Tubulin Ring Complex
+Macromolecule #1: Gamma-tubulin complex component 5
+Macromolecule #2: Tubulin gamma-1 chain
+Macromolecule #3: actin, cytoplasmic 1
+Macromolecule #4: Mitotic-spindle organizing protein 1
+Macromolecule #5: Gamma-tubulin complex component 3
+Macromolecule #6: Gamma-tubulin complex component 2
+Macromolecule #7: Gamma-tubulin complex component 4
+Macromolecule #8: Gamma-tubulin complex component 6
+Macromolecule #9: water
-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: 7.5 |
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| Grid | Model: Quantifoil R2/1 / Material: COPPER / Mesh: 200 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: PLASMA CLEANING / Pretreatment - Time: 30 sec. / Pretreatment - Atmosphere: OTHER |
| Vitrification | Cryogen name: ETHANE |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Image recording | Film or detector model: GATAN K3 (6k x 4k) / Number grids imaged: 1 / Number real images: 6127 / Average electron dose: 35.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.5 µm / Nominal defocus min: 2.0 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
| Initial model |
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| Refinement | Space: REAL / Protocol: FLEXIBLE FIT | ||||||||||||||||||||
| Output model | ![]() PDB-7qj8: |
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About Yorodumi


Keywords
Homo sapiens (human)
Authors
Germany, 2 items
Citation
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