4BY2

SAS-4 (dCPAP) TCP domain in complex with a Proline Rich Motif of Ana2 (dSTIL) of Drosophila Melanogaster


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.57 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.245 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Crystal structures of the CPAP/STIL complex reveal its role in centriole assembly and human microcephaly.

Cottee, M.A.Muschalik, N.Wong, Y.L.Johnson, C.M.Johnson, S.Andreeva, A.Oegema, K.Lea, S.M.Raff, J.W.van Breugel, M.

(2013) Elife 2: e01071-e01071

  • DOI: 10.7554/eLife.01071
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Centrioles organise centrosomes and template cilia and flagella. Several centriole and centrosome proteins have been linked to microcephaly (MCPH), a neuro-developmental disease associated with small brain size. CPAP (MCPH6) and STIL (MCPH7) are requ ...

    Centrioles organise centrosomes and template cilia and flagella. Several centriole and centrosome proteins have been linked to microcephaly (MCPH), a neuro-developmental disease associated with small brain size. CPAP (MCPH6) and STIL (MCPH7) are required for centriole assembly, but it is unclear how mutations in them lead to microcephaly. We show that the TCP domain of CPAP constitutes a novel proline recognition domain that forms a 1:1 complex with a short, highly conserved target motif in STIL. Crystal structures of this complex reveal an unusual, all-β structure adopted by the TCP domain and explain how a microcephaly mutation in CPAP compromises complex formation. Through point mutations, we demonstrate that complex formation is essential for centriole duplication in vivo. Our studies provide the first structural insight into how the malfunction of centriole proteins results in human disease and also reveal that the CPAP-STIL interaction constitutes a conserved key step in centriole biogenesis. DOI:http://dx.doi.org/10.7554/eLife.01071.001.


    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, SAS 4
A, B, C
252Drosophila melanogasterGene Names: ana2, Sas-4 (CPAP, d-SAS-4, D-Sas4, D-sas4, Dmel\CG10061, DSAS-4, DSas-4, Dsas-4, dsas-4, DSas4, Dsas4, l(3)S2214, l(3)s2214, SAS-4, sas-4, SAS4, Sas4, sas4)
Find proteins for Q9XZ31 (Drosophila melanogaster)
Go to UniProtKB:  Q9XZ31
Find proteins for Q9VI72 (Drosophila melanogaster)
Go to UniProtKB:  Q9VI72
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EDO
Query on EDO

Download SDF File 
Download CCD File 
B
ethane-1,2-diol
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.57 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.245 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 58.640α = 86.96
b = 69.910β = 88.64
c = 69.980γ = 67.69
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling
BUSTERrefinement
autoSHARPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-09-18
    Type: Initial release
  • Version 1.1: 2013-10-02
    Type: Database references
  • Version 1.2: 2017-03-15
    Type: Source and taxonomy
  • Version 1.3: 2017-12-20
    Type: Database references, Structure summary
  • Version 1.4: 2018-01-17
    Type: Database references