RAP80 Proteins

Protein Information

RAP80 was initially identified as zinc-finger containing nuclear protein that is highly expressed in testis and interacts with the retinoid-related testis-associated receptor (RTR). Later experiments revealed that RAP80 is recruited by the Coiled-coil domain 98 (CCDC98) protein to the breast cancer-1 protein BRCA1, allowing the formation of BRCA1 foci in response to DNA damage caused by ionizing radiation. Both RAP80 and CCDC98 are required for DNA damage resistance, G2-M checkpoint control, and DNA repair. Cells depleted of either RAP80 or CCDC98 exhibited increased sensitivity to ionizing radiation, although not as much as in BRCA1-depleted cells, suggesting that RAP80 and CCDC98 control only part of the DNA damage response role of BRCA1. At least four isoforms of RAP80 are known to exist.

Synonyms

9430016E08Rik; BRCA1-A complex subunit RAP80; D330018D10Rik; D630032M02Rik; RAP80; Receptor-associated protein 80; retinoid X receptor interacting protein 110; retinoid X receptor-interacting protein 110; RGD1307009; RIP110; Rxrip110; ubiquitin interaction motif containing 1; ubiquitin interaction motif-containing protein 1; Uimc1; X2HRIP110