Ku Protein

**Semantic type:** Amino Acid, Peptide, or Protein|Enzyme

**Definition:** A DNA damage repair complex that, with the 470-kDa DNA-dependent protein kinase catalytic subunit (DNA-PKcs) protein, is part of the DNA-dependent protein kinase. This protein complex is involved in V(D)J recombination, nonhomologous end-joining DNA repair, and the recognition and repair of double-stranded DNA breaks.

**Synonyms:** - ATP-Dependent DNA Helicase 2 - ATP-Dependent DNA Helicase II - CTCBF - DNA Helicase II Complex - KU ANTIGEN - Ku - Ku Autoantigen - La Protein - Lupus Autoantigen - Lupus Ku Autoantigen - TLAA - Thyroid-Lupus Autoantigen