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Pack Size:100μg/vial
Validated Species:Human
Application:IHC, ICC, WB
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Product Name Anti-Ku70 Antibody
SKU/Catalog Number PA1642
Description Rabbit IgG polyclonal antibody for X-ray repair cross-complementing protein 6(XRCC6) detection. Tested with WB, IHC-P, ICC in Human.
Cite This Product Anti-Ku70 Antibody (Boster Biological Technology, Pleasanton CA, USA, Catalog # PA1642)
Replacement Item This antibody may replace the following items: sc-12729|sc-135355|sc-135963|sc-1486|sc-1487|sc-166386|sc-169824|sc-169824-X|sc-169825|sc-169825-X|sc-17789|sc-365766|sc-5309|sc-55505|sc-56129|sc-56130|sc-56131|sc-65575|sc-71469|sc-71470|sc-71471|sc-9033 from Santa Cruz Biotechnology.
Host Rabbit
Isotype N/A
Validated Species Human
Predicted Species Bovine

*This antibody is predicted to react with the above species based on antigen sequence similarities. Our Boster Guarantee covers the use of this product with the above species.

Application IHC, ICC, WB

*Our Boster Guarantee covers the use of this product in the above tested applications.

**For positive and negative control design, consult "Tissue specificity" under Protein Target Info.

Recommended Detection Systems Boster recommends Enhanced Chemiluminescent Kit with anti-Rabbit IgG (EK1002) for Western blot, and HRP Conjugated anti-Rabbit IgG Super Vision Assay Kit (SV0002-1) for IHC(P) and ICC.
*Blocking peptide can be purchased at $50. Contact us for more information
**Boster also offers various secondary antibodies for Immunoflourescecne and IHC. Take advantage of the buy 1 primary antibody get 1 secondary antibody for free promotion for the entire year 2018!
Immunogen A synthetic peptide corresponding to a sequence at the C-terminus of human Ku70(530-545aa YPPDYNPEGKVTKRKH).
Cross Reactivity No cross reactivity with other proteins
Pack Size 100μg/vial


Clonality Polyclonal
Form Lyophilized
Contents Each vial contains 5mg BSA, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg Thimerosal, 0.05mg NaN3.
Concentration Add 0.2ml of distilled water will yield a concentration of 500ug/ml.
Storage At -20°C for one year. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for a longer time.Avoid repeated freezing and thawing.
Purification Immunogen affinity purified.
Isotype N/A

Protein Target Info (Source:

You can check the tissue specificity below for information on selecting positive and negative control.

Gene Name XRCC6
Protein Name X-ray repair cross-complementing protein 6
Molecular Weight 69843 MW
Protein 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. .
Sequence Similarities Belongs to the ku70 family.
Subcellular Localization Nucleus . Chromosome .
Uniprot ID P12956
Alternative Names X-ray repair cross-complementing protein 6;3.6.4.-;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;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;
Research Areas |epigenetics and nuclear signaling|dna / rna|dna damage & repair|non homol. end joining|
*if product is indicated to react with multiple species, protein info is based on the human gene.

Background for X-ray repair cross-complementing protein 6

XRCC6(X-Ray Repair, Complementing Defective, In Chinese Hamster, 6), also called Ku70, G22P1 or TLAA, is a protein that in humans, is encoded by the XRCC6 gene. In addition, the XRCC6 gene encodes subunit p70 of the p70/p80 autoantigen which consists of 2 proteins of molecular mass of approximately 70,000 and 80,000 daltons that dimerize to form a 10 S DNA-binding complex. The XRCC6 gene is mapped to 22q13.2. XRCC6 and Mre11 are differentially expressed during meiosis. XRCC6 interacts with Baxa, a mediator of mitochondrial-dependent apoptosis. Disruption of both FANCC and XRCC6 suppressed sensitivity to crosslinking agents, diminished chromosome breaks, and reversed defective homologous recombination. Ku70 binds directly to free DNA ends, committing them to NHEJ repair. In early meiotic prophase, however, when meiotic recombination is most probably initiated, Mre11 was abundant, whereas XRCC6 was not detectable.

Anti-Ku70 Antibody Images

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Anti-Ku70 Antibody
Anti-Ku70 antibody, PA1642, Western blotting
All lanes: Anti Ku70 (PA1642) at 0.5ug/ml
Lane 1: HT1080 Whole Cell Lysate at 40ug
Lane 2: SGC Whole Cell Lysate at 40ug
Lane 3: MM453 Whole Cell Lysate at 40ug
Lane 4: SW620 Whole Cell Lysate at 40ug
Lane 5: HELA Whole Cell Lysate at 40ug
Lane 6: A431 Whole Cell Lysate at 40ug
Lane 7: A549 Whole Cell Lysate at 40ug
Lane 8: RAJI Whole Cell Lysate at 40ug
Predicted bind size: 70KD
Observed bind size: 70KD
Anti-Ku70 Antibody
Anti-Ku70 antibody, PA1642, IHC(P)
IHC(P): Human Placenta Tissue
Anti-Ku70 Antibody
Anti-Ku70 antibody, PA1642, ICC
ICC: A549 Cell
Anti-Ku70 Antibody
Anti-Ku70 antibody, PA1642, ICC
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Customer Q&As

Q: Do you offer BSA-free antibodies? Keyword: Bovine serum albumin, carrier protein, conjugation
A: Yes, please contact us at for more information about BSA-free antibodies and availability. The new BSA-free formula uses trehalose as a replacement to BSA. We have tested many alternative chemicals and found that trehalose protects the antibodies the best.
Q: Is your western blot protocol provided from the website applicable for all your antibodies? Keyword: applications, WB
A: The protocol is applicable for all our antibodies in WB, the NC Membrane(0.45μm or 0.22μm) and transfer time(70 mins or 50 mins) depends on the protein molecular weight, details can be found in included protocol.
Q: Can I conjugate markers to this antibody? Can I link custom conjugates to this antibody? Keyword: conjugation
A: The antibody is stored with BSA and cannot be conjugated with markers. Carrier free antibodies are available upon request. Please contact
Q: What should I use for negative control?
A: Please contact us for negative control suggestions. You can also check expression databases such as genecards, uniprot etc. Due to logistic reasons, we do not sell serum or lysates that we use internally for positive or negative control.
Q: Where can I find troubleshooting information? What should I do if I have unexpected bands, high background, no signal, weak signal
A: You can find Boster's troubleshoot guides under tech support tab. Please contact us for further assistance on troubleshooting your experiment.
Q: What is the immunogen sequence of this antibody? Is this antibody polyclonal or monoclonal?
A: You can find the immunogen sequence under "Immunogen" and clonality in the product name.
Q: What is the expected band size? Why is it different than the observed band size?
A: The expected band size is predicted on the size of the protein. The actual band size may be affected by a few other factors including but not limited to:
1. Post-translational modification:phosphorylation, methylation, glycosylation etc. These modifications prevent SDS molecules from binding to the target protein and thus make the band size appear larger than expected
2. Post-translational cleavage: this can cause smaller bands and or multiple bands

3. Alternative splicing: the same gene can have alternative splicing patterns generating different size proteins, all with reactivities to the antibody.

4. Amino Acid R chain charge: SDS binds to positive charges. The different size and charge of the Amino Acid side chains can affect the amount of SDS binding and thus affect the observed band size.
5. Multimers: Multimers are usually broken up in reducing conditions. However if the interactions between the multimers are strong, the band may appear higher.,
Q: What is the suggested dilution ratio for Western Blot (WB), Immunohistochemistry (IHC) and or ELISA standards? What is the optimal pH for the sample?
A: Check the datasheet for the product for details on dilution ratios for different experiments. You can find the datasheet button on the right side of the product page.
Q: What is the protocol you used for your Western blotting (WB) and Immunohistochemistry (IHC)?
A: Check our protocols under the tech support tab.