4YNH

Structure of the C. elegans SAS-5 Implico dimerization domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1 Å
  • R-Value Free: 0.149 
  • R-Value Work: 0.128 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The Caenorhabditis elegans protein SAS-5 forms large oligomeric assemblies critical for centriole formation.

Rogala, K.B.Dynes, N.J.Hatzopoulos, G.N.Yan, J.Pong, S.K.Robinson, C.V.Deane, C.M.Gonczy, P.Vakonakis, I.

(2015) Elife 4: e07410-e07410

  • DOI: 10.7554/eLife.07410
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Centrioles are microtubule-based organelles crucial for cell division, sensing and motility. In Caenorhabditis elegans, the onset of centriole formation requires notably the proteins SAS-5 and SAS-6, which have functional equivalents across eukaryoti ...

    Centrioles are microtubule-based organelles crucial for cell division, sensing and motility. In Caenorhabditis elegans, the onset of centriole formation requires notably the proteins SAS-5 and SAS-6, which have functional equivalents across eukaryotic evolution. Whereas the molecular architecture of SAS-6 and its role in initiating centriole formation are well understood, the mechanisms by which SAS-5 and its relatives function is unclear. Here, we combine biophysical and structural analysis to uncover the architecture of SAS-5 and examine its functional implications in vivo. Our work reveals that two distinct self-associating domains are necessary to form higher-order oligomers of SAS-5: a trimeric coiled coil and a novel globular dimeric Implico domain. Disruption of either domain leads to centriole duplication failure in worm embryos, indicating that large SAS-5 assemblies are necessary for function in vivo.


    Organizational Affiliation

    Department of Chemistry, University of Oxford, Oxford, United Kingdom.,Department of Statistics, University of Oxford, Oxford, United Kingdom.,Department of Biochemistry, University of Oxford, Oxford, United Kingdom.,Swiss Institute for Experimental Cancer Research, School of Life Sciences, Swiss Federal Institute of Technology, Lausanne, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Spindle assembly abnormal protein 5
A, B
60Caenorhabditis elegansMutation(s): 0 
Gene Names: sas-5
Find proteins for Q20010 (Caenorhabditis elegans)
Go to UniProtKB:  Q20010
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1 Å
  • R-Value Free: 0.149 
  • R-Value Work: 0.128 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 27.180α = 90.00
b = 36.290β = 97.50
c = 42.600γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
SCALAdata scaling
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-06-10
    Type: Initial release
  • Version 1.1: 2015-08-26
    Type: Database references