The protein encoded by this gene is the 80-kilodalton subunit of the Ku heterodimer protein which is also known as ATP-dependant DNA helicase II or DNA repair protein XRCC5. Ku is the DNA-binding component of the DNA-dependent protein kinase, and it functions together with the DNA ligase IV-XRCC4 complex in the repair of DNA double-strand break by non-homologous end joining and the completion of V(D)J recombination events. This gene functionally complements Chinese hamster xrs-6, a mutant defective in DNA double-strand break repair and in ability to undergo V(D)J recombination. A rare microsatellite polymorphism in this gene is associated with cancer in patients of varying radiosensitivity.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Protein Aliases: 86 kDa subunit of Ku antigen; ATP-dependent DNA helicase 2 subunit 2; ATP-dependent DNA helicase II 80 kDa subunit; CTC box-binding factor 85 kDa subunit; CTC85; CTCBF; DNA repair protein XRCC5; FLJ39089; HGNC:12833; Ku autoantigen, 80kDa; Ku-80; Ku-86; Ku80; Ku86; Ku86 autoantigen related protein 1; Lupu; lupus; Lupus Ku autoantigen protein p86; Nuclear factor IV; OTTHUMP00000164061; OTTHUMP00000206791; Thyroid-lupus autoantigen; TLAA; X-ray repair complementing defective repair in Chinese hamster cells 5 (double-strand-break rejoining); X-ray repair cross-complementing protein 5
Gene Aliases: G22P2; KARP-1; KARP1; KU80; Ku86; KUB2; NFIV; XRCC5
UniProt ID: (Human) P13010
Entrez Gene ID: (Human) 7520
Molecular Function: DNA helicase