7QJA

Structure of recombinant human gamma-Tubulin Ring Complex 12-spoked assembly intermediate (spokes 1-12, homogeneous dataset)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 9.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Starting Models: experimental
View more details

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Modular assembly of the principal microtubule nucleator gamma-TuRC.

Wurtz, M.Zupa, E.Atorino, E.S.Neuner, A.Bohler, A.Rahadian, A.S.Vermeulen, B.J.A.Tonon, G.Eustermann, S.Schiebel, E.Pfeffer, S.

(2022) Nat Commun 13: 473-473

  • DOI: https://doi.org/10.1038/s41467-022-28079-0
  • Primary Citation of Related Structures:  
    7QJ0, 7QJ1, 7QJ2, 7QJ3, 7QJ4, 7QJ5, 7QJ6, 7QJ7, 7QJ8, 7QJ9, 7QJA, 7QJB, 7QJC, 7QJD, 7QJE

  • PubMed 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, 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.


  • Organizational Affiliation

    Zentrum für Molekulare Biologie der Universität Heidelberg, DKFZ-ZMBH Allianz, Im Neuenheimer Feld 282, 69120, Heidelberg, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
actin, cytoplasmic 1A [auth e]375Homo sapiensMutation(s): 0 
Gene Names: ACTB
UniProt
Find proteins for A0A6I9HGD1 (Geospiza fortis)
Explore A0A6I9HGD1 
Go to UniProtKB:  A0A6I9HGD1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A6I9HGD1
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Gamma-tubulin complex component 5B [auth l],
K [auth J]
1,024Homo sapiensMutation(s): 0 
Gene Names: TUBGCP5GCP5KIAA1899
UniProt & NIH Common Fund Data Resources
Find proteins for Q96RT8 (Homo sapiens)
Explore Q96RT8 
Go to UniProtKB:  Q96RT8
PHAROS:  Q96RT8
GTEx:  ENSG00000275835 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ96RT8
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Gamma-tubulin complex component 3907Homo sapiensMutation(s): 0 
Gene Names: TUBGCP3GCP3
UniProt & NIH Common Fund Data Resources
Find proteins for Q96CW5 (Homo sapiens)
Explore Q96CW5 
Go to UniProtKB:  Q96CW5
PHAROS:  Q96CW5
GTEx:  ENSG00000126216 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ96CW5
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Gamma-tubulin complex component 2D [auth C],
F [auth E],
H [auth G],
HA [auth A]
902Homo sapiensMutation(s): 0 
Gene Names: TUBGCP2GCP2
UniProt & NIH Common Fund Data Resources
Find proteins for Q9BSJ2 (Homo sapiens)
Explore Q9BSJ2 
Go to UniProtKB:  Q9BSJ2
PHAROS:  Q9BSJ2
GTEx:  ENSG00000130640 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9BSJ2
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Gamma-tubulin complex component 4J [auth I],
L [auth K]
667Homo sapiensMutation(s): 0 
Gene Names: TUBGCP476PGCP4
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UGJ1 (Homo sapiens)
Explore Q9UGJ1 
Go to UniProtKB:  Q9UGJ1
PHAROS:  Q9UGJ1
GTEx:  ENSG00000137822 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9UGJ1
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
Gamma-tubulin complex component 6KA [auth c],
M [auth L]
1,819Homo sapiensMutation(s): 0 
Gene Names: TUBGCP6GCP6KIAA1669
UniProt & NIH Common Fund Data Resources
Find proteins for Q96RT7 (Homo sapiens)
Explore Q96RT7 
Go to UniProtKB:  Q96RT7
PHAROS:  Q96RT7
GTEx:  ENSG00000128159 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ96RT7
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
Mitotic-spindle organizing protein 182Homo sapiensMutation(s): 0 
Gene Names: MZT1C13orf37MOZART1
UniProt & NIH Common Fund Data Resources
Find proteins for Q08AG7 (Homo sapiens)
Explore Q08AG7 
Go to UniProtKB:  Q08AG7
PHAROS:  Q08AG7
GTEx:  ENSG00000204899 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ08AG7
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
Tubulin gamma-1 chain451Homo sapiensMutation(s): 0 
Gene Names: TUBG1TUBG
UniProt & NIH Common Fund Data Resources
Find proteins for P23258 (Homo sapiens)
Explore P23258 
Go to UniProtKB:  P23258
PHAROS:  P23258
GTEx:  ENSG00000131462 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP23258
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 9.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX
RECONSTRUCTIONRELION3.0

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
German Research Foundation (DFG)GermanyPF 963/1-4
German Research Foundation (DFG)GermanySchi 295/4-4

Revision History  (Full details and data files)

  • Version 1.0: 2022-01-26
    Type: Initial release
  • Version 1.1: 2022-02-09
    Changes: Database references
  • Version 1.2: 2024-07-17
    Changes: Data collection, Refinement description