4LD3

Structural analysis of the microcephaly protein CPAP G-box domain suggests a role in centriole elongation.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.44 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.199 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural analysis of the G-box domain of the microcephaly protein CPAP suggests a role in centriole architecture.

Hatzopoulos, G.N.Erat, M.C.Cutts, E.Rogala, K.B.Slater, L.M.Stansfeld, P.J.Vakonakis, I.

(2013) Structure 21: 2069-2077

  • DOI: 10.1016/j.str.2013.08.019
  • Primary Citation of Related Structures:  
    4LD1, 4LD3, 4LZF

  • PubMed Abstract: 
  • Centrioles are evolutionarily conserved eukaryotic organelles composed of a protein scaffold surrounded by sets of microtubules organized with a 9-fold radial symmetry. CPAP, a centriolar protein essential for microtubule recruitment, features a C-terminal domain of unknown structure, the G-box ...

    Centrioles are evolutionarily conserved eukaryotic organelles composed of a protein scaffold surrounded by sets of microtubules organized with a 9-fold radial symmetry. CPAP, a centriolar protein essential for microtubule recruitment, features a C-terminal domain of unknown structure, the G-box. A missense mutation in the G-box reduces affinity for the centriolar shuttling protein STIL and causes primary microcephaly. Here, we characterize the molecular architecture of CPAP and determine the G-box structure alone and in complex with a STIL fragment. The G-box comprises a single elongated β sheet capable of forming supramolecular assemblies. Structural and biophysical studies highlight the conserved nature of the CPAP-STIL complex. We propose that CPAP acts as a horizontal "strut" that joins the centriolar scaffold with microtubules, whereas G-box domains form perpendicular connections.


    Organizational Affiliation

    Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Uncharacterized proteinA184Danio rerioMutation(s): 0 
Gene Names: cenpj
UniProt
Find proteins for E7FCY1 (Danio rerio)
Explore E7FCY1 
Go to UniProtKB:  E7FCY1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupE7FCY1
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
SCL-interrupting locus protein homologB60Danio rerioMutation(s): 0 
Gene Names: stilsillzgc:110502
UniProt
Find proteins for Q8JGS1 (Danio rerio)
Explore Q8JGS1 
Go to UniProtKB:  Q8JGS1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8JGS1
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download Ideal Coordinates CCD File 
F [auth A]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
IPA
Query on IPA

Download Ideal Coordinates CCD File 
C [auth A],
D [auth A],
E [auth A]
ISOPROPYL ALCOHOL
C3 H8 O
KFZMGEQAYNKOFK-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.44 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.199 
  • Space Group: P 32
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 79.396α = 90
b = 79.396β = 90
c = 50.561γ = 120
Software Package:
Software NamePurpose
XDSdata scaling
PHASERphasing
BUSTERrefinement
XDSdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-09-04
    Type: Initial release
  • Version 1.1: 2013-10-16
    Changes: Database references
  • Version 1.2: 2013-12-18
    Changes: Database references
  • Version 1.3: 2014-02-05
    Changes: Database references