Key features and details
- Rabbit polyclonal to XLF
- Suitable for: IP, IHC-P, ICC/IF, WB
- Knockout validated
- Reacts with: Human
- Isotype: IgG
Product nameAnti-XLF antibody
See all XLF primary antibodies
DescriptionRabbit polyclonal to XLF
Tested applicationsSuitable for: IP, IHC-P, ICC/IF, WBmore details
Species reactivityReacts with: Human
Predicted to work with: Dog
Synthetic peptide corresponding to Human XLF aa 250 to the C-terminus (C terminal).
(Peptide available as
- HeLa whole cell or nuclear extract, A431 and Jurkat whole cell extracts.
Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C or -80°C. Avoid freeze / thaw cycle.
Storage bufferpH: 7.40
Preservative: 0.02% Sodium azide
Batches of this product that have a concentration < 1mg/ml may have BSA added as a stabilising agent. If you would like information about the formulation of a specific lot, please contact our scientific support team who will be happy to help.
Concentration information loading...
PurityImmunogen affinity purified
Our Abpromise guarantee covers the use of ab33499 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|IP||Use at an assay dependent concentration.|
|IHC-P||1/125. Perform heat mediated antigen retrieval before commencing with IHC staining protocol.|
|ICC/IF||Use a concentration of 1 µg/ml.|
|WB||Use a concentration of 1 - 5 µg/ml. Detects a band of approximately 37 kDa (predicted molecular weight: 35 kDa).|
FunctionDNA repair protein involved in DNA nonhomologous end joining (NHEJ) required for double-strand break (DSB) repair and V(D)J recombination. May serve as a bridge between XRCC4 and the other NHEJ factors located at DNA ends, or may participate in reconfiguration of the end bound NHEJ factors to allow XRCC4 access to the DNA termini. It may act in concert with XRCC6/XRCC5 (Ku) to stimulate XRCC4-mediated joining of blunt ends and several types of mismatched ends that are noncomplementary or partially complementary.
Tissue specificityUbiquitously expressed.
Involvement in diseaseDefects in NHEJ1 are the cause of severe combined immunodeficiency due to NHEJ1 deficiency (NHEJ1-SCID) [MIM:611291]; also known as autosomal recessive T cell-negative, B cell-negative, NK cell-positive, severe combined immunodeficiency with microcephaly, growth retardation and sensitivity to ionizing radiation or NHEJ1 syndrome. SCID refers to a genetically and clinically heterogeneous group of rare congenital disorders characterized by impairment of both humoral and cell-mediated immunity, leukopenia and low or absent antibody levels. Patients with SCID present in infancy with recurrent, persistent infections by opportunistic organisms. The common characteristic of all types of SCID is absence of T-cell-mediated cellular immunity due to a defect in T-cell development. NHEJ1-SCID is characterized by a profound T- and B-lymphocytopenia associated with increased cellular sensitivity to ionizing radiation, microcephaly and growth retardation. Some patients may manifest SCID with sensitivity to ionizing radiation without microcephaly and mild growth retardation, probably due to hypomorphic NHEJ1 mutations.
Note=A chromosomal aberration involving NHEJ1 is found in a patient with polymicrogyria. Translocation t(2;7)(q35;p22).
Sequence similaritiesBelongs to the XLF family.
- Information by UniProt
- Cernunnos antibody
- FLJ12610 antibody
- NHEJ 1 antibody
Lane 1: Wild-type HAP1 cell lysate (20 µg)
Lane 2: XLF knockout HAP1 cell lysate (20 µg)
Lanes 1 - 2: Merged signal (red and green). Green – ab33499 observed at 38 kDa. Red - loading control, ab18058, observed at 124 kDa.
ab33499 was shown to specifically react with XLF when XLF knockout samples were used. Wild-type and XLF knockout samples were subjected to SDS-PAGE. ab33499 and ab18058 (loading control to Vinculin) were diluted at 1 μg/mL and 1/10 000 respectively and incubated overnight at 4°C. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye® 680RD) preadsorbed (ab216776) secondary antibodies at 1/10000 dilution for 1 hour at room temperature before imaging.
All lanes : Anti-XLF antibody (ab33499) at 1 µg/ml
Lane 1 : HeLa (Human epithelial carcinoma cell line) Whole Cell Lysate
Lane 2 :
Jurkat whole cell lysate (ab7899)
Lane 3 :
A431 whole cell lysate (ab7909)
Lysates/proteins at 20 µg per lane.
All lanes : Goat polyclonal to Rabbit IgG (Alexa Fluor® 680) at 1/10000 dilution
Performed under reducing conditions.
Predicted band size: 35 kDa
Observed band size: 37 kDa why is the actual band size different from the predicted?
XLF was immunoprecipitated using 0.5mg A431 whole cell extract, 5µg of Rabbit polyclonal to XLF and 50µl of protein G magnetic beads (+). No antibody was added to the control (-).
The antibody was incubated under agitation with Protein G beads for 10min, A431 whole cell extract lysate diluted in RIPA buffer was added to each sample and incubated for a further 10min under agitation.
Proteins were eluted by addition of 40µl SDS loading buffer and incubated for 10min at 70oC; 10µl of each sample was separated on a SDS PAGE gel, transferred to a nitrocellulose membrane, blocked with 5% BSA and probed with ab33499.
Secondary: Mouse monoclonal [SB62a] Secondary Antibody to Rabbit IgG light chain (HRP) (ab99697).
Band: Bands: 35kDa: XLF; non specific - 37kDa: We are unsure as to the identity of this extra band.
ab33499 (1/200) staining XLF in assynchronous, bleomycin treated, human RPE-1 cells (green). Cells were fixed in paraformaldehyde, permeabilised in 0.5% Triton X100/PBS and counterstained with DAPI in order to highlight the nucleus (blue). Please refer to abreview for further experimental details.
ICC/IF image of ab33499 stained human HEK 293 cells. The cells were PFA fixed (10 min), permabilised in TBS-T (20 min) and incubated with the antibody (ab33499, 1µg/ml) for 1h at room temperature. 1%BSA / 10% normal serum / 0.3M glycine was used to quench autofluorescence and block non-specific protein-protein interactions. The secondary antibody (green) was Alexa Fluor® 488 goat anti-rabbit IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red). DAPI was used to stain the cell nuclei (blue).
Image courtesy of Human Protein Atlas
ab33499 staining XLF in human kidney. Paraffin embedded human kidney tissue was incubated with ab33499 (1/125 dilution) for 30 mins at room temperature. Antigen retrieval was performed by heat induction in citrate buffer pH 6.
ab33499 was tested in a tissue microarray (TMA) containing a wide range of normal and cancer tissues as well as a cell microarray consisting of a range of commonly used, well characterised human cell lines.
Further results for this antibody can be found at www.proteinatlas.org
ab33499 has been referenced in 11 publications.
- Normanno D et al. Mutational phospho-mimicry reveals a regulatory role for the XRCC4 and XLF C-terminal tails in modulating DNA bridging during classical non-homologous end joining. Elife 6:N/A (2017). Human . PubMed: 28500754
- Harada K et al. Gimeracil enhances the antitumor effect of cisplatin in oral squamous cell carcinoma cellsin vitroandin vivo. Oncol Lett 14:3349-3356 (2017). PubMed: 28927087
- Simon NE et al. RNA-binding protein RBM14 regulates dissociation and association of non-homologous end joining proteins. Cell Cycle 16:1175-1180 (2017). PubMed: 28426349
- Shamanna RA et al. WRN regulates pathway choice between classical and alternative non-homologous end joining. Nat Commun 7:13785 (2016). PubMed: 27922005
- Ochi T et al. DNA repair. PAXX, a paralog of XRCC4 and XLF, interacts with Ku to promote DNA double-strand break repair. Science 347:185-8 (2015). PubMed: 25574025