CEP164
Function
Plays a role in microtubule organization and/or maintenance for the formation of primary cilia (PC), a microtubule-based structure that protrudes from the surface of epithelial cells. Plays a critical role in G2/M checkpoint and nuclear divisions. A key player in the DNA damage-activated ATR/ATM signaling cascade since it is required for the proper phosphorylation of H2AX, RPA, CHEK2 and CHEK1. Plays a critical role in chromosome segregation, acting as a mediator required for the maintenance of genomic stability through modulation of MDC1, RPA and CHEK1.
Involvement in disease
Nephronophthisis 15
NPHP15
An autosomal recessive disorder characterized by the association of nephronophthisis with Leber congenital amaurosis and retinal degeneration, often resulting in blindness during childhood. Additional features include seizures, cerebellar vermis hypoplasia, facial dysmorphism, bronchiectasis and liver failure. Nephronophthisis is a chronic tubulo-interstitial nephritis that progresses to end-stage renal failure.
None
The disease is caused by variants affecting the gene represented in this entry.
Post-translational modifications
Phosphorylation at Ser-186 is induced upon DNA-damage caused by treatment with IR irradiation, UV irradiation, hydroxyurea or amphidicolin. Also MDC1-mediated chromatin remodeling is critical for DNA damage-induced phosphorylation.
Tissue Specificity
Expressed in several cell lines.
Cellular localization
- Cytoplasm
- Cytoskeleton
- Microtubule organizing center
- Centrosome
- Centriole
- Nucleus
- Localizes specifically to very distally located appendage structures on the mature centriole from which initiate PC formation (PubMed:26337392). Persisted at centrioles throughout mitosis. Expressed in chromatin-enriched nuclear fraction of HeLa cells. In response to DNA damage, it translocates to nuclear foci that contain the DNA damage response proteins KAT5/TIP60 and CHEK1.
Alternative names
KIAA1052, NPHP15, CEP164, Centrosomal protein of 164 kDa, Cep164