8VRD

Rigid body fitted model for free recombinant gamma tubulin ring complex.


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure of the gamma-tubulin ring complex-capped microtubule.

Aher, A.Urnavicius, L.Xue, A.Neselu, K.Kapoor, T.M.

(2024) Nat Struct Mol Biol 31: 1124-1133

  • DOI: https://doi.org/10.1038/s41594-024-01264-z
  • Primary Citation of Related Structures:  
    8VA2, 8VRD, 8VRJ, 8VRK, 8VT7

  • PubMed Abstract: 

    Microtubules are composed of α-tubulin and β-tubulin dimers positioned head-to-tail to form protofilaments that associate laterally in varying numbers. It is not known how cellular microtubules assemble with the canonical 13-protofilament architecture, resulting in micrometer-scale α/β-tubulin tracks for intracellular transport that align with, rather than spiral along, the long axis of the filament. We report that the human ~2.3 MDa γ-tubulin ring complex (γ-TuRC), an essential regulator of microtubule formation that contains 14 γ-tubulins, selectively nucleates 13-protofilament microtubules. Cryogenic electron microscopy reconstructions of γ-TuRC-capped microtubule minus ends reveal the extensive intra-domain and inter-domain motions of γ-TuRC subunits that accommodate luminal bridge components and establish lateral and longitudinal interactions between γ-tubulins and α-tubulins. Our structures suggest that γ-TuRC, an inefficient nucleation template owing to its splayed conformation, can transform into a compacted cap at the microtubule minus end and set the lattice architecture of cellular microtubules.


  • Organizational Affiliation

    Laboratory of Chemistry and Cell Biology, The Rockefeller University, New York, NY, USA.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Gamma-tubulin complex component 3907Homo sapiensMutation(s): 0 
Gene Names: TUBGCP3GCP3
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PHAROS:  Q96CW5
GTEx:  ENSG00000126216 
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UniProt GroupQ96CW5
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
TUBGCP6 proteinAA [auth T],
B [auth P],
Z [auth L]
1,811Homo sapiensMutation(s): 0 
Gene Names: TUBGCP6
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Find proteins for Q96RT7 (Homo sapiens)
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PHAROS:  Q96RT7
GTEx:  ENSG00000128159 
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UniProt GroupQ96RT7
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Mitotic-spindle organizing protein 1C [auth Q],
D [auth R]
82Homo sapiensMutation(s): 0 
Gene Names: MZT1C13orf37MOZART1
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PHAROS:  Q08AG7
GTEx:  ENSG00000204899 
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UniProt GroupQ08AG7
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Actin, cytoplasmic 1E [auth S]375Homo sapiensMutation(s): 0 
Gene Names: ACTB
EC: 3.6.4
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Find proteins for P60709 (Homo sapiens)
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PHAROS:  P60709
GTEx:  ENSG00000075624 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Isoform 3 of Gamma-tubulin complex component 2EA [auth M],
F [auth A],
J [auth C],
N [auth E],
R [auth G]
930Homo sapiensMutation(s): 0 
Gene Names: TUBGCP2GCP2
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PHAROS:  Q9BSJ2
GTEx:  ENSG00000130640 
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UniProt GroupQ9BSJ2
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
Tubulin gamma-1 chain457Homo sapiensMutation(s): 0 
Gene Names: TUBG1TUBG
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Find proteins for P23258 (Homo sapiens)
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PHAROS:  P23258
GTEx:  ENSG00000131462 
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UniProt GroupP23258
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
Isoform 2 of Gamma-tubulin complex component 4W [auth I],
Y [auth K]
666Homo sapiensMutation(s): 0 
Gene Names: TUBGCP476PGCP4
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Find proteins for Q9UGJ1 (Homo sapiens)
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PHAROS:  Q9UGJ1
GTEx:  ENSG00000137822 
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UniProt GroupQ9UGJ1
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
Gamma-tubulin complex component 5X [auth J]1,024Homo sapiensMutation(s): 0 
Gene Names: TUBGCP5GCP5KIAA1899
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Find proteins for Q96RT8 (Homo sapiens)
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PHAROS:  Q96RT8
GTEx:  ENSG00000275835 
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UniProt GroupQ96RT8
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI)United StatesGM130234

Revision History  (Full details and data files)

  • Version 1.0: 2024-03-27
    Type: Initial release
  • Version 1.1: 2024-10-09
    Changes: Data collection, Database references, Structure summary