6EWL image
Entry Detail
PDB ID:
6EWL
Title:
Danio rerio CEP120 first C2 domain (C2A)
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2017-11-04
Release Date:
2018-05-02
Method Details:
Experimental Method:
Resolution:
1.40 Å
R-Value Free:
0.20
R-Value Work:
0.16
R-Value Observed:
0.16
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Centrosomal protein 120
Chain IDs:A
Chain Length:139
Number of Molecules:1
Biological Source:Danio rerio
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
CSO A CYS modified residue
Primary Citation
Disease-Associated Mutations in CEP120 Destabilize the Protein and Impair Ciliogenesis.
Cell Rep 23 2805 2818 (2018)
PMID: 29847808 DOI: 10.1016/j.celrep.2018.04.100

Abstact

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.

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Protein

Chemical

Disease

Primary Citation of related structures