5-dRP lyase Ku70, CTC75, CTCBF, Ku70, TLAA, 5-deoxyribose-5-phosphate lyase Ku70, 5-dRP lyase Ku70, 70 kDa subunit of Ku antigen, ATP dependent DNA helicase 2 subunit 1, ATP dependent DNA helicase II 70 kDa subunit, ATP-dependent DNA helicase 2 subunit 1
Together, Ku70 and Ku80 make up the Ku heterodimer, which binds to DNA double-strand break ends and is required for the non-homologous end joining (NHEJ) pathway of DNA repair. It is also required for V(D)J recombination, which utilizes the NHEJ pathway