All Photos(1)




Anti-XRCC5 (Ku86) Antibody, clone N9C1

clone N9C1, from mouse

Sign Into View Organizational & Contract Pricing

X-ray repair cross-complementing protein 5, 86 kDa subunit of Ku antigen, ATP-dependent DNA helicase 2 subunit 2, ATP-dependent DNA helicase II 80 kDa subunit, CTC box-binding factor 85 kDa subunit, CTC85, CTCBF, DNA repair protein XRCC5, Ku80, Ku86, Lup

biological source


antibody form

purified immunoglobulin

antibody product type

primary antibodies


N9C1, monoclonal

species reactivity



antibody small pack of 25 μL


western blot: suitable



NCBI accession no.

UniProt accession no.

target post-translational modification


Gene Information

human ... XRCC5(7520)
mouse ... Xrcc5(22596)

General description

X-ray repair cross-complementing protein 5 (UniProt: P13010; also known as 86 kDa subunit of Ku antigen, ATP-dependent DNA helicase 2 subunit 2, ATP-dependent DNA helicase II 80 kDa subunit, CTC box-binding factor 85 kDa subunit, CTC85, CTCBF, DNA repair protein XRCC5, Ku80, Ku86, Lupus Ku autoantigen protein p86, Nuclear factor IV, Thyroid-lupus autoantigen, TLAA, X-ray repair complementing defective repair in Chinese hamster cells 5) is encoded by the XRCC5 (also known as G22P2) gene (Gene ID: 7520) in human. XRCC5 is a single stranded DNA-dependent ATP-dependent helicase that exists as a heterodimer composed on XRCC5/XRCC6. This 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 about 100-fold. It plays a role in chromosome translocation. It binds preferentially to fork-like ends of double-stranded DNA in a cell cycle-dependent manner. It stabilizes broken DNA ends and bring them together. The assembly of the DNA-PK complex to DNA ends is required for the NHEJ (Non-homologous end joining) ligation step. In association with NAA15, the XRCC5/6 dimer is shown to bind to the osteocalcin promoter and activates osteocalcin expression. The Ku domain of XRCC5 is localized in amino acids 251-460. It also contains an EEXXXDL motif (aa 720-728), which is required for the interaction with catalytic subunit PRKDC and its recruitment to sites of DNA damage. It undergoes phosphorylation on serine residues by PRKDC that enhances its helicase activity.


Clone N9C1 is a mouse monoclonal antibody that specifically detects DNA repair protein XRCC5.


Full-length human recombinant DNA repair protein XRCC5 (Ku86).


Anti-XRCC5 (Ku86), clone N9C1, Cat. No. MABE1892, is a highly specific mouse monoclonal antibody that targets DNA repair protein XRCC5 and has been tested for use in Western Blotting.
Research Category
Epigenetics & Nuclear Function
Western Blotting Analysis: A representative lot detected XRCC5 (Ku86) in Western Blotting applications (Knuth, M.W., et. al. (1990). J Biol Chem. 265(29):17911-20).


Evaluated by Western Blotting in SW480 cell lysate.

Western Blotting Analysis: 1 µg/mL of this antibody detected XRCC5 (Ku86) in SW480 cell lysate.

Target description

~80 kDa observed; 82.71 kDa calculated. Uncharacterized bands may be observed in some lysate(s).

Physical form

Format: Purified
Protein G purified
Purified mouse monoclonal antibody IgG1 in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

Storage and Stability

Stable for 1 year at 2-8°C from date of receipt.

Other Notes

Concentration: Please refer to lot specific datasheet.


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Storage Class

12 - Non Combustible Liquids




Not applicable


Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).


Product Number
Pack Size/Quantity

Additional examples:





enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service