5I7C

Centrosomin-motif 2 (CM2) domain of Drosophila melanogaster Centrosomin (Cnn)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.244 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural Basis for Mitotic Centrosome Assembly in Flies.

Feng, Z.Caballe, A.Wainman, A.Johnson, S.Haensele, A.F.M.Cottee, M.A.Conduit, P.T.Lea, S.M.Raff, J.W.

(2017) Cell 169: 1078-1089.e13

  • DOI: https://doi.org/10.1016/j.cell.2017.05.030
  • Primary Citation of Related Structures:  
    5I7C, 5MVW, 5MW0, 5MW9, 5MWE

  • PubMed Abstract: 

    In flies, Centrosomin (Cnn) forms a phosphorylation-dependent scaffold that recruits proteins to the mitotic centrosome, but how Cnn assembles into a scaffold is unclear. We show that scaffold assembly requires conserved leucine zipper (LZ) and Cnn-motif 2 (CM2) domains that co-assemble into a 2:2 complex in vitro. We solve the crystal structure of the LZ:CM2 complex, revealing that both proteins form helical dimers that assemble into an unusual tetramer. A slightly longer version of the LZ can form micron-scale structures with CM2, whose assembly is stimulated by Plk1 phosphorylation in vitro. Mutating individual residues that perturb LZ:CM2 tetramer assembly perturbs the formation of these micron-scale assemblies in vitro and Cnn-scaffold assembly in vivo. Thus, Cnn molecules have an intrinsic ability to form large, LZ:CM2-interaction-dependent assemblies that are critical for mitotic centrosome assembly. These studies provide the first atomic insight into a molecular interaction required for mitotic centrosome assembly.


  • Organizational Affiliation

    The Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford OX1 3RE, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Centrosomin
A, B, C, D
70Drosophila melanogasterMutation(s): 0 
Gene Names: cnnArrCG4832
UniProt
Find proteins for P54623 (Drosophila melanogaster)
Explore P54623 
Go to UniProtKB:  P54623
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP54623
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.244 
  • Space Group: P 61
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.22α = 90
b = 49.22β = 90
c = 211.23γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
xia2data reduction
AutoSolphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Wellcome TrustUnited Kingdom104575/Z/14/Z
Wellcome TrustUnited Kingdom100298/Z/12/Z
Dunn School EPA StudentshipUnited Kingdom--

Revision History  (Full details and data files)

  • Version 1.0: 2017-03-08
    Type: Initial release
  • Version 1.1: 2017-12-06
    Changes: Database references
  • Version 1.2: 2024-05-08
    Changes: Data collection, Database references, Derived calculations