Ku P70/P80 Human Recombinant Protein

The p70/p80 autoantigen is a nuclear complex consisting of two subunits with molecular masses of approximately 70 and 80 kDa. The complex functions as a single-stranded DNA-dependent ATP-dependent helicase. The complex may be involved in the repair of nonhomologous DNA ends such as that required for double-strand break repair, transposition, and V(D)J recombination. High levels of autoantibodies to p70 and p80 have been found in some patients with systemic lupus erythematosus. [provided by RefSeq, Jul 2008]

Ku70: a mini-chromosome maintenance protein, essential for the initiation of eukaryotic genome replication. Allows DNA to undergo a single round of replication per cell cycle. Required for the entry in S phase and for cell division.

Protein type: DNA repair, damage; EC 3.6.4.-; Nuclear receptor co-regulator; Helicase; EC 4.2.99.-; RNA-binding; DNA-binding

Chromosomal Location of Human Ortholog: 22q13.2

Cellular Component: nucleoplasm; transcription factor complex; nuclear telomere cap complex; membrane; nucleolus; cytosol; nucleus

Molecular Function: ATP-dependent DNA helicase activity; protein C-terminus binding; protein binding; DNA binding; double-stranded DNA binding; damaged DNA binding; double-stranded telomeric DNA binding; 5'-deoxyribose-5-phosphate lyase activity; ATP binding

Biological Process: positive regulation of neurogenesis; V(D)J recombination; viral reproduction; transcription, DNA-dependent; positive regulation of transcription, DNA-dependent; DNA repair; double-strand break repair via nonhomologous end joining; DNA duplex unwinding; DNA ligation; double-strand break repair; positive regulation of interferon type I production; innate immune response; positive regulation of transcription from RNA polymerase II promoter; brain development; negative regulation of transcription, DNA-dependent; telomere maintenance