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Yorodumi- EMDB-14013: Structure of recombinant human gamma-Tubulin Ring Complex 12-spok... -
+Open data
-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 information microtubule nucleation by interphase microtubule organizing center / gamma-tubulin complex localization / equatorial microtubule organizing center / gamma-tubulin ring complex / interphase microtubule organizing center / polar microtubule / mitotic spindle microtubule / meiotic spindle organization / gamma-tubulin complex / microtubule nucleation ...microtubule nucleation by interphase microtubule organizing center / gamma-tubulin complex localization / equatorial microtubule organizing center / gamma-tubulin ring complex / interphase microtubule organizing center / polar microtubule / mitotic spindle microtubule / meiotic spindle organization / gamma-tubulin complex / microtubule nucleation / non-motile cilium / gamma-tubulin binding / microtubule organizing center / pericentriolar material / cytoplasmic microtubule / cell leading edge / mitotic sister chromatid segregation / mitotic spindle assembly / single fertilization / spindle assembly / cytoplasmic microtubule organization / 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 / centriole / AURKA Activation by TPX2 / mitotic spindle organization / ciliary basal body / condensed nuclear chromosome / meiotic cell cycle / neuron migration / brain development / recycling endosome / structural constituent of cytoskeleton / microtubule cytoskeleton organization / spindle pole / spindle / microtubule cytoskeleton / Regulation of PLK1 Activity at G2/M Transition / apical part of cell / mitotic cell cycle / microtubule binding / protein-containing complex assembly / microtubule / neuron projection / centrosome / GTP binding / structural molecule activity / nucleoplasm / identical protein binding / membrane / nucleus / cytosol / cytoplasm 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: 2022 Title: 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 |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-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 (ref.) |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-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
-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 |
-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 |
-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 |
+Image processing
-Atomic model buiding 1
Initial model |
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Refinement | Space: REAL / Protocol: FLEXIBLE FIT | ||||||||||||||||||||
Output model | PDB-7qj8: |