5MW0

Complex between the Leucine Zipper (LZ) and Centrosomin-motif 2 (CM2) domains of Drosophila melanogaster Centrosomin (Cnn) - L535E mutant form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.237 

wwPDB Validation 3D Report Full Report


This is version 1.0 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: 10.1016/j.cell.2017.05.030
  • Primary Citation of Related Structures:  

  • 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-m ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Centrosomin
A, B
70Drosophila melanogasterMutation(s): 0 
Gene Names: cnn (Arr)
Find proteins for P54623 (Drosophila melanogaster)
Go to UniProtKB:  P54623
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Centrosomin
C, D
58Drosophila melanogasterMutation(s): 1 
Gene Names: cnn (Arr)
Find proteins for P54623 (Drosophila melanogaster)
Go to UniProtKB:  P54623
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.237 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 45.769α = 90.00
b = 43.930β = 108.28
c = 68.640γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata scaling
PHASERphasing
iMOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Wellcome TrustUnited Kingdom10457
Wellcome TrustUnited Kingdom100298

Revision History 

  • Version 1.0: 2017-06-28
    Type: Initial release