Source:http://linkedlifedata.com/resource/umls/id/C1311257
NCI: KU70 protein is the 70 kD subunit of the KU autoantigen, a heterodimeric DNA repair complex that binds DNA double-strand breaks, is the DNA-binding component of the DNA-dependent protein kinase, and facilitates repair by nonhomologous end-joining. KU70 and KU80 form a dyad-symmetrical molecule with a preformed ring that encircles duplex DNA. KU protein is also involved in V(D)J recombination. KU is identical to DNA helicase II, an ATP-dependent DNA unwinding enzyme. (from OMIM 152690 and NCI)