WB, IP
H R
Endogenous
22
Rabbit IgG
#Q9BUH6
286257
Product Information
Product Usage Information
| Application | Dilution |
|---|---|
| Western Blotting | 1:1000 |
| Immunoprecipitation | 1:100 |
Storage
Specificity / Sensitivity
Species Reactivity:
Human, Rat
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Pro195 of human PAXX protein.
Background
Double stranded DNA breaks (DSBs) are the most toxic of DNA lesions. They occur in response to genotoxic stress, and they are also an obligate intermediate in the V(D)J recombination events in the immune system. In mammalian cells, the most prominent mechanism by which cells deal with DSBs is known as NHEJ (non-homologous end-joining), and involves a core group of proteins that includes Ku, DNA-PK, XRCC4, and XLF (1).
PAXX, (PAralog of XRCC4 and XLF, also known as C9orf142 or XLS), is a more recently identified component of the NHEJ machinery whose crystal structure resembles that of XRCC4 (2). PAXX directly interacts with Ku, and promotes accumulation of Ku at DSBs (2,3). Depletion of PAXX impairs cellular DSB repair (2-4,5). Paxx -/- mice develop normally with mild radiosensitivity, but a Paxx/Xlf double knockout is embryonic lethal in mice, indicating synthetic lethality between Paxx and Xlf (6). Paxx/Xlf double knockout have increased apopotosis in post-mitotic motor neurons, as well as impaired development of the adaptive immune system (7).
- Tsai, C.J. et al. (2007) Proc Natl Acad Sci U S A 104, 7851-6.
- Ochi, T. et al. (2015) Science 347, 185-188.
- Liu, X. et al. (2017) Nat Commun 8, 13816.
- Craxton, A. et al. (2015) Cell Death Differ 22, 890-7.
- Xing, M. et al. (2015) Nat Commun 6, 6233.
- Balmus, G. et al. (2016) Genes Dev 30, 2152-2157.
- Abramowski, V. et al. (2017) Cell Death Differ , .
Species Reactivity
Species reactivity is determined by testing in at least one approved application (e.g., western blot).
Western Blot Buffer
IMPORTANT: For western blots, incubate membrane with diluted primary antibody in 5% w/v nonfat dry milk, 1X TBS, 0.1% Tween® 20 at 4°C with gentle shaking, overnight.
Applications Key
WB: Western Blotting IP: Immunoprecipitation
Cross-Reactivity Key
H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected
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