Oreochromis niloticus CEP120 second C2 domain (C2B) A200P + G307S mutant

Experimental Data Snapshot

  • Resolution: 2.10 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.232 
  • R-Value Observed: 0.234 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


Disease-Associated Mutations in CEP120 Destabilize the Protein and Impair Ciliogenesis.

Joseph, N.Al-Jassar, C.Johnson, C.M.Andreeva, A.Barnabas, D.D.Freund, S.M.V.Gergely, F.van Breugel, M.

(2018) Cell Rep 23: 2805-2818

  • DOI: https://doi.org/10.1016/j.celrep.2018.04.100
  • Primary Citation of Related Structures:  
    6EWG, 6EWH, 6EWI, 6EWL, 6EWP

  • PubMed Abstract: 

    Ciliopathies are a group of genetic disorders caused by a failure to form functional cilia. Due to a lack of structural information, it is currently poorly understood how ciliopathic mutations affect protein functionality to give rise to the underlying disease. Using X-ray crystallography, we show that the ciliopathy-associated centriolar protein CEP120 contains three C2 domains. The point mutations V194A and A199P, which cause Joubert syndrome (JS) and Jeune asphyxiating thoracic dystrophy (JATD), respectively, both reduce the thermostability of the second C2 domain by targeting residues that point toward its hydrophobic core. Genome-engineered cells homozygous for these mutations have largely normal centriole numbers but show reduced CEP120 levels, compromised recruitment of distal centriole markers, and deficient cilia formation. Our results provide insight into the disease mechanism of two ciliopathic mutations in CEP120, identify putative binding partners of CEP120 C2B, and suggest a complex genotype-phenotype relation of the CEP120 ciliopathy alleles.

  • Organizational Affiliation

    Medical Research Council Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Centrosomal protein 120
A, B
193Oreochromis niloticusMutation(s): 2 
Gene Names: cep120
Find proteins for I3K8D3 (Oreochromis niloticus)
Explore I3K8D3 
Go to UniProtKB:  I3K8D3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupI3K8D3
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.10 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.232 
  • R-Value Observed: 0.234 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 40.726α = 90
b = 95.449β = 90
c = 99.168γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Medical Research Council (United Kingdom)United KingdomMC_UP_1201/3

Revision History  (Full details and data files)

  • Version 1.0: 2018-05-02
    Type: Initial release
  • Version 1.1: 2018-06-13
    Changes: Data collection, Database references
  • Version 1.2: 2024-01-17
    Changes: Data collection, Database references, Refinement description