Fanconi anemia, complementation group E protein (FANCE)

Fanconi anemia, complementation group E protein is a key member of the FA nuclear DNA repair complex, functioning as an essential bridge between the FA core complex and the FANCD2 protein. FANCE enables effective response to DNA damage, particularly the repair of DNA interstrand cross-links that impede replication and threaten genome stability. FANCE interacts directly with FANCC and FANCD2, facilitating the assembly of the multiprotein DNA repair machinery and ensuring proper nucleation and activation of the pathway. Pathogenic mutations or reduced function of FANCE lead to Fanconi anemia, a condition characterized by chromosomal instability, bone marrow failure, and increased cancer risk. High expression or mutation of FANCE in tumors is implicated in several cancer types and is under investigation for its prognostic value and potential therapeutic targeting. Structurally, FANCE features a unique architecture of helical repeats that forms a solenoidal, non-globular fold, providing a scaffold for critical protein–protein interactions in DNA repair.

Other names

FANCEFACEFAEFanconi anemia complementation group E

Drugs like mitomycin C induce DNA cross-links that the FA pathway (including FANCE) repairs; sensitivity to these agents is used diagnostically. Inhibitors of DNA repair can exploit FANCE loss for synthetic lethality in cancer (general principle).