5AL6

Central Coiled-Coil Domain (CCCD) of Drosophila melanogaster Ana2. A natural, parallel, tetrameric coiled-coil bundle.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.8 Å
  • R-Value Free: 0.116 
  • R-Value Work: 0.106 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The homo-oligomerisation of both Sas-6 and Ana2 is required for efficient centriole assembly in flies.

Cottee, M.A.Muschalik, N.Johnson, S.Leveson, J.Raff, J.W.Lea, S.M.

(2015) Elife 4: e07236-e07236

  • DOI: 10.7554/eLife.07236
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Sas-6 and Ana2/STIL proteins are required for centriole duplication and the homo-oligomerisation properties of Sas-6 help establish the ninefold symmetry of the central cartwheel that initiates centriole assembly. Ana2/STIL proteins are poorly conser ...

    Sas-6 and Ana2/STIL proteins are required for centriole duplication and the homo-oligomerisation properties of Sas-6 help establish the ninefold symmetry of the central cartwheel that initiates centriole assembly. Ana2/STIL proteins are poorly conserved, but they all contain a predicted Central Coiled-Coil Domain (CCCD). Here we show that the Drosophila Ana2 CCCD forms a tetramer, and we solve its structure to 0.8 Å, revealing that it adopts an unusual parallel-coil topology. We also solve the structure of the Drosophila Sas-6 N-terminal domain to 2.9 Å revealing that it forms higher-order oligomers through canonical interactions. Point mutations that perturb Sas-6 or Ana2 homo-oligomerisation in vitro strongly perturb centriole assembly in vivo. Thus, efficient centriole duplication in flies requires the homo-oligomerisation of both Sas-6 and Ana2, and the Ana2 CCCD tetramer structure provides important information on how these proteins might cooperate to form a cartwheel structure.


    Organizational Affiliation

    Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ANASTRAL SPINDLE 2
A
49Drosophila melanogasterMutation(s): 0 
Gene Names: ana2 (Ana-2, Ana2, BcDNA:LD22033, Dmel\CG8262, STIL)
Find proteins for Q9XZ31 (Drosophila melanogaster)
Go to UniProtKB:  Q9XZ31
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.8 Å
  • R-Value Free: 0.116 
  • R-Value Work: 0.106 
  • Space Group: I 4
Unit Cell:
Length (Å)Angle (°)
a = 33.270α = 90.00
b = 33.270β = 90.00
c = 74.280γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
MOLREPphasing
Aimlessdata scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-06-03
    Type: Initial release
  • Version 1.1: 2015-06-10
    Type: Database references
  • Version 1.2: 2019-02-27
    Type: Data collection, Database references, Other