4TTY

N-terminal domain of C. Reinhardtii SAS-6 homolog bld12p G94D F145W Q147R (NN25)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.211 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

SAS-6 engineering reveals interdependence between cartwheel and microtubules in determining centriole architecture.

Hilbert, M.Noga, A.Frey, D.Hamel, V.Guichard, P.Kraatz, S.H.Pfreundschuh, M.Hosner, S.Fluckiger, I.Jaussi, R.Wieser, M.M.Thieltges, K.M.Deupi, X.Muller, D.J.Kammerer, R.A.Gonczy, P.Hirono, M.Steinmetz, M.O.

(2016) Nat Cell Biol 18: 393-403

  • DOI: 10.1038/ncb3329
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Centrioles are critical for the formation of centrosomes, cilia and flagella in eukaryotes. They are thought to assemble around a nine-fold symmetric cartwheel structure established by SAS-6 proteins. Here, we have engineered Chlamydomonas reinhardti ...

    Centrioles are critical for the formation of centrosomes, cilia and flagella in eukaryotes. They are thought to assemble around a nine-fold symmetric cartwheel structure established by SAS-6 proteins. Here, we have engineered Chlamydomonas reinhardtii SAS-6-based oligomers with symmetries ranging from five- to ten-fold. Expression of a SAS-6 mutant that forms six-fold symmetric cartwheel structures in vitro resulted in cartwheels and centrioles with eight- or nine-fold symmetries in vivo. In combination with Bld10 mutants that weaken cartwheel-microtubule interactions, this SAS-6 mutant produced six- to eight-fold symmetric cartwheels. Concurrently, the microtubule wall maintained eight- and nine-fold symmetries. Expressing SAS-6 with analogous mutations in human cells resulted in nine-fold symmetric centrioles that exhibited impaired length and organization. Together, our data suggest that the self-assembly properties of SAS-6 instruct cartwheel symmetry, and lead us to propose a model in which the cartwheel and the microtubule wall assemble in an interdependent manner to establish the native architecture of centrioles.


    Organizational Affiliation

    Laboratory of Biomolecular Research, Department of Biology and Chemistry, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Centriole protein
A, B
161Chlamydomonas reinhardtiiMutation(s): 3 
Gene Names: CrSAS-6CHLRE_12g516950v5
Find proteins for A9CQL4 (Chlamydomonas reinhardtii)
Go to UniProtKB:  A9CQL4
Protein Feature View
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.211 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 117.2α = 90
b = 44.22β = 117.4
c = 70.33γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing
Cootmodel building

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Swiss National Science FoundationSwitzerland310030B_138659

Revision History 

  • Version 1.0: 2015-07-01
    Type: Initial release
  • Version 1.1: 2016-05-11
    Changes: Database references