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Product Name Ku70 / XRCC6 Chinese Name DNA修复酶Ku70抗体 Alias XRCC6_HUMAN; X-ray repair cross-complementing protein 6; G22P1; EC:3.6.4.-; EC:4.2.99.-; 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); ML8; KU70; KU-70; TLAA; Research Area Cell biology immunology Developmental biology transcriptional regulatory factor Immunogen Species Rabbit Clonality Polyclonal React Species Mouse, Rat, (predicted: Human, Dog, Horse, ) Applications WB=1:500-2000
not yet tested in other applications.
optimal dilutions/concentrations should be determined by the end user.Theoretical molecular weight 70kDa Cellular localization The nucleus Form Liquid Concentration 1mg/ml immunogen KLH conjugated synthetic peptide derived from human Ku-70: 41-140/609 Lsotype IgG Purification affinity purified by Protein A Buffer Solution 0.01M TBS(pH7.4) with 1% BSA, 0.03% Proclin300 and 50% Glycerol. Storage Shipped at 4℃. Store at -20 °C for one year. Avoid repeated freeze/thaw cycles. Attention This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications. PubMed PubMed Product Detail 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]
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.
Subunit:
Heterodimer of a 70 kDa (XRCC6) and a 80 kDa (XRCC5) subunit. The dimer associates in a DNA-dependent manner with PRKDC to form the DNA-dependent protein kinase complex DNA-PK, and with the LIG4-XRCC4 complex. The dimer also associates with NAA15, and this complex binds to the osteocalcin promoter and activates osteocalcin expression. In addition, XRCC6 interacts with the osteoblast-specific transcription factors MSX2, RUNX2 and DLX5. Interacts with ELF3. Interacts with XRCC6BP1. The XRCC5/6 dimer associates in a DNA-dependent manner with APEX1. Interacts with CLU. Binds to CDK9 isoform 2. Identified in a complex with DEAF1 and XRCC5. Interacts with DEAF1 (via the SAND domain); the interaction is direct and may be inhibited by DNA-binding.
Subcellular Location:
Nucleus. Chromosome.
Post-translational modifications:
Phosphorylation by PRKDC may enhance helicase activity. Phosphorylation of Ser-51 does not affect DNA repair.
Similarity:
Belongs to the ku70 family.
Contains 1 Ku domain.
Contains 1 SAP domain.
SWISS:
P12956
Gene ID:
2547
Database links:Entrez Gene: 2547 Human
SwissProt: P12956 Human
Ku-70是一种DNA修复蛋白,当细胞在受到辐射损伤而发生DNA双链断裂时,Ku70可迅速将其修复,从而提高细胞存活率.
Ku是一种多功能的蛋白,在许多重要的细胞生命过程中起着直接或间接的作用,如DNA双链断裂的修复,免疫球蛋白和T细胞受体V(D)J重排,免疫球蛋白构型转换,DNA复制,DNA转录的调节,同时在细胞周期的G2和M时相中起着特殊的作用.Product Picture
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