Single-stranded DNA-dependent ATP-dependent helicase that plays a key role in DNA non-homologous end joining (NHEJ) by recruiting DNA-PK to DNA . Required for double-strand break repair and V(D)J recombination . Also has a role in chromosome translocation . Has a role in chromosome translocation . The DNA helicase II complex binds preferentially to fork-like ends of double-stranded DNA in a cell cycle-dependent manner . It works in the 3''-5'' direction . During NHEJ, the XRCC5-XRRC6 dimer performs the recognition step: it recognizes and binds to the broken ends of the DNA and protects them from further resection . Binding to DNA may be mediated by XRCC6 . The XRCC5-XRRC6 dimer acts as a regulatory subunit of the DNA-dependent protein kinase complex DNA-PK by increasing the affinity of the catalytic subunit PRKDC to DNA by 100-fold . The XRCC5-XRRC6 dimer is probably involved in stabilizing broken DNA ends and bringing them together . The assembly of the DNA-PK complex to DNA ends is required for the NHEJ ligation step . Probably also acts as a 5''-deoxyribose-5-phosphate lyase (5''-dRP lyase), by catalyzing the beta-elimination of the 5'' deoxyribose-5-phosphate at an abasic site near double-strand breaks . 5''-dRP lyase activity allows to ''clean'' the termini of abasic sites, a class of nucleotide damage commonly associated with strand breaks, before such broken ends can be joined . The XRCC5-XRRC6 dimer together with APEX1 acts as a negative regulator of transcription . In association with NAA15, the XRCC5-XRRC6 dimer binds to the osteocalcin promoter and activates osteocalcin expression . Plays a role in the regulation of DNA virus-mediated innate immune response by assembling into the HDP-RNP complex, a complex that serves as a platform for IRF3 phosphorylation and subsequent innate immune response activation through the cGAS-STING pathway . Negatively regulates apoptosis by interacting with BAX and sequestering it from the mitochondria . Might have deubiquitination activity, acting on BAX .

P12956

2547

X-ray repair cross-complementing protein 6, 364-, 4299-, 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, CTC box-binding factor 75 kDa subunit, CTC75, CTCBF, DNA repair protein XRCC6, Lupus Ku autoantigen protein p70, Ku70, Thyroid-lupus autoantigen, TLAA, X-ray repair complementing defective repair in Chinese hamster cells 6, XRCC6, G22P1

Human,Mouse

WB,IHC,IF,ICC,FC

WB 1:1000
IHC 1:100-500
IF 1:10-50
ICC 1:10-50
FC 1:10-50

70 kD

Rabbit

Polyclonal

Rabbit IgG

This antibody is purified by peptide affinity purification.

PBS (pH7.4) with 0.09% (W/V) sodium azide.

Store at -20°C. Stable for 12 months from date of receipt.Do not aliquot the antibody.Avoid freeze / thaw cycle.