Aliases
70 kDa subunit of Ku antigen; ATP-dependent DNA helicase II; 70 kDa subunit; CTC box binding factor 75 kDa subunit; CTC75
Antibody Type
Polyclonal Antibody
Uniprot ID
Swiss-Prot: P12956
NCBI Gene ID: 2547
Immunogen
Synthesized peptide derived from C-terminal of human XRCC6.
Raised In
Rabbit
Species Reactivity
Human Mouse
Tested Applications
WB IHC Recommended dilution: Western blotting: 1:500~1:3000, Immunohistochemistry: 1:50~1:100,
Background / Function
Single-stranded DNA-dependent ATP-dependent helicase. 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. Binding to DNA may be mediated by XRCC6. Involved in DNA non-homologous end joining (NHEJ) required for double-strand break repair and V(D)J recombination. The XRCC5/6 dimer acts as 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 XRCC5/6 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. Required for osteocalcin gene expression. 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 XRCC5/6 dimer together with APEX1 acts as a negative regulator of transcription.Yanhong Liu, Carcinogenesis, Mar 2007; 10.1093.Erich M. Sturgis, Arch Otolaryngol Head Neck Surg, Feb 1999; 125: 185. Yansong Gu, PNAS, Jul 1997; 94: 8076. Kyoung-Mu Lee, Clin. Cancer Res., Jun 2005; 11: 4620 – 4626.
Conjugate
Unconjugated
Storage Buffer
Rabbit IgG in phosphate buffered saline (without Mg2+ and Ca2+), pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
Form
liquid
Storage
Shipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze.
Purity
The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen.
