| Formulation | Catalog # | Availability | Price | |
|---|---|---|---|---|
| BSA Free | NB100-304SS | |||
| Formulation | Catalog # | Availability | Price | |
|---|---|---|---|---|
| BSA Free | NBP1-71704SS | |||
| Formulation | Catalog # | Availability | Price | |
|---|---|---|---|---|
| Azide and BSA Free | NBP2-93452-0.02ml | |||
| Formulation | Catalog # | Availability | Price | |
|---|---|---|---|---|
| BSA Free | NBP2-13467-25ul | |||
| Formulation | Catalog # | Availability | Price | |
|---|---|---|---|---|
| BSA Free | NBP2-50338-0.025ml | |||
| Formulation | Catalog # | Availability | Price | |
|---|---|---|---|---|
| BSA Free | NBP2-32593-25ul | |||
| Formulation | Catalog # | Availability | Price | |
|---|---|---|---|---|
| BSA Free | NBP3-21410-25ul | |||
| Formulation | Catalog # | Availability | Price | |
|---|---|---|---|---|
| Azide and BSA Free | NBP2-94004-0.02ml | |||
| Formulation | Catalog # | Availability | Price | |
|---|---|---|---|---|
| BSA Free | NBP3-17044-25ul | |||
| Formulation | Catalog # | Availability | Price | |
|---|---|---|---|---|
| BSA Free | NBP2-32491-25ul | |||
![<b>Genetic Strategies Validation. </b>Depletion of PNUTS and NPAT induces a global DDR.(A) Induction of telomere dysfunction–induced foci (TIF) upon candidate knockdown in HeLa cells from Fig 5. Depletion of TRF2 was used as a positive control. 53BP1 was detected by indirect IF and telomeres by FISH with a Cy3-[CCCTAA]3 probe. (B) Frequency distribution of the number of TIFs per cell from (A). n indicates the number of cells analyzed for each condition and red lines mark the mean.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-271220231261934.jpg)
![Western Blot: 53BP1 Antibody - BSA Free [NB100-304] - Depletion of TPX2 causes defects in 53BP1 ionizing radiation-induced foci formation.(A) The protein level of 53BP1 is not affected by miRNA-mediated depletion of TPX2. Levels of actin used as loading controls. Image collected & cropped by CiteAb from the following publication (//dx.plos.org/10.1371/journal.pone.0110994), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-310202415334914.jpg)
![Immunocytochemistry/ Immunofluorescence: 53BP1 Antibody - BSA Free [NB100-304] - Nuclear intensity of key BER proteins.A) Quantification of mean nuclear fluorescence intensity is shown for PARP1 (**** P 25 cells each with Z-stacked (optically sectioned) nuclei.DOI://dx.doi.org/10.7554/eLife.01222.017 Image collected & cropped by CiteAb from the following publication (//elifesciences.org/articles/01222), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-310202415382416.jpg)
![Immunocytochemistry/ Immunofluorescence: 53BP1 Antibody - BSA Free [NB100-304] - 53BP1 cofractionates with lamins A/C in HDF. (A) HDF were treated with IR (5 Gy, 1 h) & fractionated by sequential treatments of detergent (CSK/T) & DNase I. Extracts were then processed for immunoblotting using the indicated antibodies. WCE, whole cell extract. P, pellet; S, supernatant. (B) HDF were treated with IR (2 Gy; 1 h) & extracted in situ with CSK/T followed by DNase I digestion before being processed for immunofluorescence using lamin A/C & 53BP1 antibodies. Scale bar, 10 μm. Image collected & cropped by CiteAb from the following publication (//pubmed.ncbi.nlm.nih.gov/25645366), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-310202415384168.jpg)
![Western Blot: 53BP1 Antibody - BSA Free [NB100-304] - 53BP1 focus formation. (A) Bars indicate the mean ± standard error of 53BP1 focus-forming cells in three independent control & three independent Asciz−/− primary MEF cultures under basal conditions (open bars), in response to 24-h aphidicolin treatment (black bars) & following 30 min recovery after ionizing radiation (grey bars). More detailed quantifications of foci/cell are shown in Supp. Fig. S2. (B) Subcelllular distribution of 53BP1 in cell fractionation assays. M601 is used as a mitochondrial marker, & tubulin as a cytosolic marker. Image collected & cropped by CiteAb from the following publication (//linkinghub.elsevier.com/retrieve/pii/S1568786417301349), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-310202415395939.jpg)
![Immunocytochemistry/ Immunofluorescence: 53BP1 Antibody - BSA Free [NB100-304] - hsRAD51-II3A expressing cells accumulate 53BP1 foci after treatment with HU. Representative images depicting 53BP1 foci (green) in PCNA (red) positive cells after the indicated treatments. DNA is stained in blue. Scale bar = 10 μm. Dot plot depicts quantitation of 53BP1 foci after indicated treatments. Data is combined data consisting of at least 100 nuclei from two independent experiments. Red line represents the mean. Values are presented as mean ± SD. Statistical significance was determined using the Mann–Whitney U test. Source data are provided as a source data file Image collected & cropped by CiteAb from the following publication (//pubmed.ncbi.nlm.nih.gov/31562309), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-310202415382411.jpg)
![Immunocytochemistry/ Immunofluorescence: 53BP1 Antibody - BSA Free [NB100-304] - Persistent DNA damage exists in ALT cells. (A) IF-FISH showing DNA damage response (53BP1) in ALT (VA13, U2OS, SAOS2, SKLU-1), telomerase positive (MCF7, A549), & human normal fibroblast cells (MRC5, BJ). Scale bar: 10 μm. (B) Quantification of (A). Data represent the mean ± SEM, n = 3. More than 100 cells were counted for each experiment. (C) FACS analysis of apoptosis in cells listed in (A). (D) Quantification of (C). Data represent the mean ± SEM, n = 3. (E) Proliferation of p53-positive (VA13, U2OS) & p53-defictive (SAOS2, SKLU-1) ALT cells. (F) Western blot showing activation of JNK (phosphorylation) & accumulation of c-myc in ALT cells. Human normal BJ cells were used as a control Image collected & cropped by CiteAb from the following publication (//pubmed.ncbi.nlm.nih.gov/31115790), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-31020241539594.jpg)
![Immunocytochemistry/ Immunofluorescence: 53BP1 Antibody - BSA Free [NB100-304] - LNCaP cells in culture were treated for 24 hrs with DMSO or ENZ, then irradiated with 0 or 1 Gy.Cell were fixed & immunostained for 53BP1 0.5, 1.5 & 24 hrs after irradiation. Immunofluorescent images were obtained by confocal microscopy. White bar = 20 microns. A) DMSO alone, B) ENZ alone, C) 1 Gy, D) ENZ + 1 Gy. White bar = 20 microns. Image collected & cropped by CiteAb from the following publication (//pubmed.ncbi.nlm.nih.gov/30933998), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-310202415293335.jpg)
![Immunocytochemistry/ Immunofluorescence: 53BP1 Antibody - BSA Free [NB100-304] - IMR90 cells depleted for Ajuba undergo a DNA damage response. (A,C,D) Western blots for Ajuba, Cyclin A, Rb, Chk1 phosphorylation, & PARP cleavage on lysates prepared from IMR90 cells 72 h after transfection with siRNA #3. The loading controls with GAPDH for each blot are shown. (B) Staining for p53BP1 in Ajuba-depleted cells (siRNA#3), with siGFP as a control. Image collected & cropped by CiteAb from the following publication (//pubmed.ncbi.nlm.nih.gov/23755068), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-310202415371983.jpg)
![Western Blot: 53BP1 Antibody - BSA Free [NB100-304] - DYNLL1 is required for 53BP1-dependent p53 responses to Nutlin-3. a Immunoblot analysis of the MCF-7 cell lines used in (a) with anti-53BP1 or anti-RPA32 antibodies prior to N3 treatment. b Quantification of n = 3 independent experiments represented in (a), each performed in triplicate. Mean ± SD. c Indicated parental or stably complemented 53BP1-/- MCF-7 cell lines were incubated in the presence (11 days) or absence (7 days) of Nutlin-3 (4 µM) Image collected & cropped by CiteAb from the following publication (//pubmed.ncbi.nlm.nih.gov/30559443), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-310202415394519.jpg)
![Immunocytochemistry/ Immunofluorescence: 53BP1 Antibody - BSA Free [NB100-304] - RNA:DNA hybrids promote 53BP1 foci formation.(a) Immunofluorescence using the anti-flag & anti-53BP1 antibody in cells expressing Flag-tagged hybrid-binding (HB) domain or flag-tagged active RNaseH1. 53BP1 foci were quantified in cells expressing HB-domain or RNaseH1. Column bars represent the mean of n number of cells (described on each column), from three independent experiments. Error bars represent SEM. *P ≤ 0.05; **P 0.05. Image collected & cropped by CiteAb from the following publication (//pubmed.ncbi.nlm.nih.gov/25582120), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-310202415525242.jpg)
![Western Blot: 53BP1 Antibody - BSA Free [NB100-304] - Hypoxia causes DNA damage in patient-derived colonosphere cultures in vitro(a) Two independent patient-derived colonospheres were cultured in normoxia (21%) or hypoxia (0.1%) for 24 hours. Immunofluorescence was then used to asses gamma H2AX (green) in the nuclei DAPI (blue). (b) Bar graphs showing the quantification of gamma H2AX observed in (a) (n=3), shown as percentage of the mean gamma H2AX intensity at normoxia. (c) Representative confocal pictures of the comet assay of colonospheres cultured as in (a). (d) Bar graphs showing the quantification of DNA damage observed with the comet assay (Extend tail moment) (n=73). (e) Colonospheres were cultured as in (a) & gamma H2AX was assessed by FACS. The plots show normoxic gamma H2AX levels in red & hypoxic gamma H2AX levels in blue in two independent cell lines. (f) Human colonospheres were exposed to hypoxia for the indicated periods of time. Cell lysates were then analyzed by Western blotting for the indicated markers (cropped). Image collected & cropped by CiteAb from the following publication (//www.oncotarget.com/lookup/doi/10.18632/oncotarget.21145), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-31020241683928.jpg)
![Immunocytochemistry/ Immunofluorescence: 53BP1 Antibody - BSA Free [NB100-304] - TRF1HP1 alpha results in reduced TIFs induced by mutant hTR expression. Cells stably expressing TRF1HP1 alpha (WT or mutant variants of HP1 alpha ) were infected with lentivirus containing WT hTR, or mutant hTR (47A or TSQ1) on day 0, selected for stable expression after 48 h, & analyzed on day 5. a Fluorescence microscopy images of representative cells expressing mutant hTR 47A stained with telomeric (Tel-Cy3) peptide nucleic acid (PNA) probes (magenta in merged image) via fluorescent in situ hybridization (FISH), antibody against DNA-damage repair protein marker 53BP1 (green in merged image), & counterstained with DAPI. Zoom-in images (the last row) correspond to yellow-squared regions of the row above. b % TIF per telomere of each nucleus is quantified; n = 94–159 nuclei combining data of three independent experiments. ****p 0.05. (c) Immunofluorescence staining of gamma H2AX-53BP1 positive foci 7 days following exposure to 1Gy of the indicated radiation type. Scale bar is 10 µm. (d) Immunofluorescence staining for BrdU & 53BP1 7 days following exposure to 1Gy Fe ions. Scale bar is 10 µm. The graph represents the average of scoring in 5 different fields a total of 70 cells. Image collected & cropped by CiteAb from the following publication (//dx.plos.org/10.1371/journal.pone.0108234), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-310202415532010.jpg)
![Immunocytochemistry/ Immunofluorescence: 53BP1 Antibody - BSA Free [NB100-304] - SPOC1 is recruited to I-SceI-induced DSBs where it colocalizes with 53BP1. (A) In situ immunofluorescence studies with U2OS19 ptight13 GFP-LacR cells with a stably integrated I-SceI cleavage site flanked by lac operator repeats reveals localization of the GFP-lac repressor protein (GFP-LacR) at the lac-operator DNA sequences in the nucleus before (−I-SceI) & 16 h after I-SceI-induced (+ I-SceI) DSB. In contrast, SPOC1 (white) & 53BP1 (red) are distributed throughout the nucleus in the absence of I-Scel, & partially colocalized in naturally occurring repair foci. After I-SceI cleavage to generate DSBs, SPOC1 & 53BP1 colocalize at distinct foci, including the cleaved DNA adjacent to DNA-bound GFP-LacR. Proteins were visualized by immunostaining & confocal microscopy. Scale bars = 10 μm. (B) Quantitative analysis of SPOC1 recruitment to the 53BP1 & GFP-LacR positive lacO array before & 16 h after I-SceI induction. (C) Monitoring of the kinetics of SPOC1 & 53BP1 recruitment to DSBs between 0 & 24 h post-I-SceI induction. (D) Quantifying ATM kinase inhibitor-mediated effects on recruitment of SPOC1 & 53BP1 to DSBs as evident 16 h after I-SceI-induced cleavage. (E) SPOC1 & 53BP1 colocalize at a large discrete endogenous repair focus as observed in some non-irradiated U2OS cells by immunostaining. Scale bar = 10µm. Image collected & cropped by CiteAb from the following publication (//academic.oup.com/nar/article-lookup/doi/10.1093/nar/gks868), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-310202415525292.jpg)
![Western Blot: 53BP1 Antibody - BSA Free [NB100-304] - A-type lamin depletion inhibits DNA repair & reduces cellular fitness to DNA damage. (A) Wild-type (WT) or Y259X HDF treated w/ proteasome inhibitor MG-132 (30 μm). Cell extracts prepared & levels of 53BP1 assessed by immunoblotting. beta -tubulin a loading control. WCE, whole cell extract. The relative levels of 53BP1 expressed relative to levels of untreated WT HDF (1.00). In untreated Y259X cells, 53BP1 levels fell to 15% & restored to ∽50% following treatment w/ MG-132. (B) Cell extracts prepared from WT & Y259X HDF & assessed by immunoblotting w/ indicated antibodies. Shown is a representative set of blots from two independent experiments. (C) WT & Y259X HDF biochemically extracted into cytoplasmic & nuclear fractions before immunoblotting for levels of 53BP1. (D) HDF & Y259X cells treated w/ IR (3 Gy), fixed at the times indicated & stained w/ gamma -H2AX antibody. The number of gamma -H2AX foci at each time point quantified & data represents the mean ± SD from 3 independent experiments. (E) U2OS cells transfected w/ siCTRL or siLMNA siRNA & plated onto 60-mm dishes. The cells then exposed to varying doses of IR & fixed 12 days later in a solution containing crystal violet. The surviving fraction at each IR dose calculated based on the plating efficiency of untreated plates. Data represent the mean ± SD from 3 independent experiments. (F) HDF or Y259X cells treated w/ DMSO or KU55933 ATM inhibitor (10 μm) before exposure to indicated doses of IR then fixed, processed & stained w/ gamma -H2AX antibody. Residual gamma -H2AX foci enumerated & the data represent the mean ± SD from 3 independent experiments. (G) HDF or Y259X cells exposed to IR, briefly extracted w/ CSK buffer & processed for IF w/ gamma -H2AX & pKAP-1 antibodies. Scale bar, 10 μm. Image collected & cropped by CiteAb from the following publication (//pubmed.ncbi.nlm.nih.gov/25645366), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-31020241612631.jpg)
![Immunocytochemistry/ Immunofluorescence: 53BP1 Antibody - BSA Free [NB100-304] - TRF2/Terc double null mutation induces DNA damage response resulting in terminal differentiation of metastatic tumorsHistopathology of primary SCC from K14Cre;TRF2+/+;Terc+/+ A. & K14Cre;TRF2f/f;Terc-/- C. mice is shown by H&E staining. Scale bar = 10 μm. Histopathology of metastatic SCC from K14Cre;TRF2+/+;Terc+/+ B. & K14Cre;TRF2f/f;Terc-/- D., E. mice is shown by H&E staining. Scale bar in (D) = 50 μm. Apoptotic cells in primary SCC from K14Cre;TRF2+/+;Terc+/+ F. & K14Cre;TRF2f/f;Terc-/- G. mice are shown by TUNEL assay. Scale bar = 10 μm. Proliferating cells were detected in K14Cre;TRF2+/+;Terc+/+ H. & K14Cre;TRF2f/f;Terc-/- I. primary SCC by PCNA immunohistochemistry & quantitated in J.. Error bars indicate SEM. Asterisk indicates statistically significant difference. Co-localization of 53BP1 (shown by immunofluorescence, AlexaFluor 488) at telomeres (shown by fluorescence in situ hybridization, Cy3) in histopathologic sections from K14Cre;TRF2+/+;Terc+/+ K. & K14Cre;TRF2f/f;Terc-/- L. primary SCC & quantitated in M. Error bars indicate SEM. Nuclei were counterstained with DAPI. Scale bar = 5 μm. N. Average telomere length ratios in CD34+ stem, Lgr6+ stem, & basal cells from K14Cre;TRF2+/+;Terc+/+ & K14Cre;TRF2f/f;Terc-/- primary SCC were determined by qPCR. Error bars represent SEM. O. Phospho-ATM, phospho-Chk2, & p53 expression in K14Cre;TRF2+/+;Terc+/+ & K14Cre;TRF2f/f;Terc-/- primary SCC is shown by western blot. beta -actin expression was used to control for equal loading of each lane. Representative blots are shown. Image collected & cropped by CiteAb from the following publication (//pubmed.ncbi.nlm.nih.gov/29113290), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-310202415532050.jpg)
![Immunocytochemistry/ Immunofluorescence: 53BP1 Antibody - BSA Free [NB100-304] - Increased Neurogenesis in the Absence of INK4a/ARF Expression Is Independent of Apoptosis & Microglial Activation(A) Quantification of the number of apoptotic cells, as detected by TUNEL, in the DG 6 hr following exposure of WT, ink4a/arf-deficient (INK4a/ARF KO), & p53-deficient (p53 KO) mice to 6 Gy cranial IR. Indicated is the average number of apoptotic cells per DG section (n = 4 mice per group).(B) Quantification of CD68 expression in the DG 24 hr following exposure of mice to IR.(C) Representative confocal images showing CD68+ cells (in red) next to apoptotic TUNEL+ cells (in green) following exposure of WT mice to IR. Note the increase in CD68 signal & side by side localization of CD68+ & TUNEL+ cells following IR.(D–F) Proportion of neurons (NeuN, in green), young neurons (DCX, in green), & progenitor cells (Sox2, in green) showing persistent DNA damage foci (53BP1, in red) in the hippocampus of mice sacrificed 8 weeks post exposure to IR. Nuclei were stained with DAPI.(G) Representative confocal images of brain sections from irradiated WT mice displaying 53BP1 DNA damage foci with the indicated cell markers are shown. Images were acquired by a Leica microsystems TSC SP8 HyVolution confocal microscope & an HC PL APO CS2 40×/1.3 oil objective. The p values (∗p 25 cells each. (E) GamGFP forms IR-induced foci in Ku80-defective MEFs. (F) Zoomed image from E. (G) IR-induced foci containing Gam only, 53BP1 only or both Gam & 53BP1 (>2600 total foci counted in three independent experiments). Error bars, SEM. Scale bars = 5 μm.DOI://dx.doi.org/10.7554/eLife.01222.012GamGFP marks DSBs in mammalian cells.(A) Live analysis of GamGFP localization to laser-induced DNA damage. Hela cells producing GamGFP were laser damaged along the cell track indicated by the red line at 0 min (m) & images were taken at the indicated times as shown. (B) GamGFP co-localizes with gamma H2AX in fixed Hela cells.DOI://dx.doi.org/10.7554/eLife.01222.013Ku inhibits GamGFP recruitment at DSBs independently of non-homologous end joining.Cells lacking either Ku80 or LigIV are defective in non-homologous end joining (NHEJ), yet the presence of Ku still inhibits recruitment of GamGFP to laser-induced DSBs even in NHEJ-defective cells, & thus independently of the cell's ability to complete NHEJ. Whereas it could have been possible that reduced GamGFP recruitment in the presence of Ku was caused by reduced persistence of DSBs due to their repair by NHEJ, our data show instead that Ku inhibits recruitment independently of successful NHEJ & imply that Ku binding to DSEs itself is inhibitory.DOI://dx.doi.org/10.7554/eLife.01222.014 Image collected & cropped by CiteAb from the following publication (//elifesciences.org/articles/01222), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-310202415525217.jpg)
![Immunocytochemistry/ Immunofluorescence: 53BP1 Antibody - BSA Free [NB100-304] - Loss of functional PRPF31 induce RNA:DNA hybrid dependent genomic instability but not in mice retinal neurons.(a andb) gamma H2AX & 53BP1 foci analysis in PRPF31 siRNA-transfected RPE-1 cells. (c & d) gamma H2AX & 53BP1 foci analysis in vasculo-stromal fraction derived primary cells fromPrpf31+/A216P mice (Prpf31-ki). (e) gamma H2AX & 53BP1 foci analysis in retina fromPrpf31+/A216P mice on postnatal day 20. All column bars represent the mean. For (a-d) “n”, mentioned on respective column, signify number of cells analyzed from two independent experiments. For (e) n=16 for each column & signify number of retinal sections analyzed; acquired from n=4 eyes. Error bars represent Standard error of Mean (SEM). *P≤0.05; **P 0.9999, ****P 0.05). ns = not significant. Image collected & cropped by CiteAb from the following publication (//www.oncotarget.com/lookup/doi/10.18632/oncotarget.21145), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-31020241612670.jpg)
![Immunocytochemistry/ Immunofluorescence: 53BP1 Antibody - BSA Free [NB100-304] - TRF1HP1 alpha results in reduced TIFs induced by mutant hTR expression. Cells stably expressing TRF1HP1 alpha (WT or mutant variants of HP1 alpha ) were infected with lentivirus containing WT hTR, or mutant hTR (47A or TSQ1) on day 0, selected for stable expression after 48 h, & analyzed on day 5. a Fluorescence microscopy images of representative cells expressing mutant hTR 47A stained with telomeric (Tel-Cy3) peptide nucleic acid (PNA) probes (magenta in merged image) via fluorescent in situ hybridization (FISH), antibody against DNA-damage repair protein marker 53BP1 (green in merged image), & counterstained with DAPI. Zoom-in images (the last row) correspond to yellow-squared regions of the row above. b % TIF per telomere of each nucleus is quantified; n = 94–159 nuclei combining data of three independent experiments. ****p 0.05. (c) Immunofluorescence staining of gamma H2AX-53BP1 positive foci 7 days following exposure to 1Gy of the indicated radiation type. Scale bar is 10 µm. (d) Immunofluorescence staining for BrdU & 53BP1 7 days following exposure to 1Gy Fe ions. Scale bar is 10 µm. The graph represents the average of scoring in 5 different fields a total of 70 cells. Image collected & cropped by CiteAb from the following publication (//dx.plos.org/10.1371/journal.pone.0108234), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-31020241682145.jpg)
![Western Blot: 53BP1 Antibody - BSA Free [NB100-304] - Lamin A/C-53BP1 interaction is regulated in a DNA damage-dependent manner. (A) Left; HDF were subjected to IR (10 Gy) & allowed to recover for 1 h. Association between A-type lamins & 53BP1 was assessed by immunoprecipitation of endogenous lamin A/C followed by immunoblotting with 53BP1 & lamin A/C antibodies. WCE, whole cell extract, IP: immunoprecipitates. WCE represents 5% input. Right; endogenous lamin A/C was immunoprecipitated & supernatants or pellets were analysed by immunoblotting for interaction with JMJD2A. (B) U2OS/GFP-lamin A cells were pretreated with caffeine (20 mm) for 1 h before exposure to IR (10 Gy, 1 h recovery). Cell extracts were then subjected to immunoprecipitation using GFP-Trap beads, & bound complexes were then analysed by immunoblotting using 53BP1 & GFP antibodies. WCE represents 1% input. (C) As in (C) except cells were pretreated with 10 μm ATMi for 1 h before IR. WCE represents 1% input. (D) U2OS/GFP-lamin A cells were subjected to laser micro-irradiation, fixed 1 h later & immunostained with gamma -H2AX antibody. Scale bar, 10 μm. (E) U2OS cells were transfected with siCTRL or siLMNA & subjected to laser micro-irradiation, fixed 15 min later & then processed for immunofluorescence with gamma -H2AX & 53BP1 antibodies. Scale bar, 10 μm. Image collected & cropped by CiteAb from the following publication (//pubmed.ncbi.nlm.nih.gov/25645366), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-310202415525286.jpg)
![Immunocytochemistry/ Immunofluorescence: 53BP1 Antibody - BSA Free [NB100-304] - Persistence of repair foci at suboptimal pHe. (A) Left panel shows immunofluorescence detection of gamma H2AFX & 53BP1 following 24 h recovery from bleomycin treatment. Control, sample before damage induction. Colocalization is shown in white; PCC, Pearson correlation coefficient score. Right panel corresponding to gamma H2AFX foci/cell at 24 h & 48 h following recovery. Only foci larger than 10 pixels were counted. Experiments were performed in triplicate. Values are mean ± SEM. *P 1.0 mm, >2.0 mm) are shown. Data are expressed as the mean ± SD (n = 3, *p 10 foci was called positive & counted). DAPI was used for nuclear staining; (B) The relative DNA damage in primary-culture tumor cells at 120 min post-IR was analyzed by comet assay (upper), & gamma H2AX foci formation in primary-culture tumor cells at 24 h post-IR was presented，“+” & “−“ indicated whether VPA was added in the groups (lower left) & calculated (lower right); (C) The clonogenic survival assay was used to detect survival in the U2OS cells treated with the combination of 0.5 or 1.0 mM VPA with 10 μM ABT888 (PARPi). Each data point in the graphs was from three independent experiments (mean ± SD). p-Values were calculated by Student’s t-test (* p 25 cells each. (E) GamGFP forms IR-induced foci in Ku80-defective MEFs. (F) Zoomed image from E. (G) IR-induced foci containing Gam only, 53BP1 only or both Gam & 53BP1 (>2600 total foci counted in three independent experiments). Error bars, SEM. Scale bars = 5 μm.DOI://dx.doi.org/10.7554/eLife.01222.012GamGFP marks DSBs in mammalian cells.(A) Live analysis of GamGFP localization to laser-induced DNA damage. Hela cells producing GamGFP were laser damaged along the cell track indicated by the red line at 0 min (m) & images were taken at the indicated times as shown. (B) GamGFP co-localizes with gamma H2AX in fixed Hela cells.DOI://dx.doi.org/10.7554/eLife.01222.013Ku inhibits GamGFP recruitment at DSBs independently of non-homologous end joining.Cells lacking either Ku80 or LigIV are defective in non-homologous end joining (NHEJ), yet the presence of Ku still inhibits recruitment of GamGFP to laser-induced DSBs even in NHEJ-defective cells, & thus independently of the cell's ability to complete NHEJ. Whereas it could have been possible that reduced GamGFP recruitment in the presence of Ku was caused by reduced persistence of DSBs due to their repair by NHEJ, our data show instead that Ku inhibits recruitment independently of successful NHEJ & imply that Ku binding to DSEs itself is inhibitory.DOI://dx.doi.org/10.7554/eLife.01222.014 Image collected & cropped by CiteAb from the following publication (//elifesciences.org/articles/01222), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-310202415541936.jpg)
![Immunocytochemistry/ Immunofluorescence: 53BP1 Antibody - BSA Free [NB100-304] - DNA repair response to irradiation-induced DNA-breaks in adult mice retina.(a) Immunofluorescence performed using anti-gamma H2AX & 53BP1 antibodies in mice retina 1hr after exposure to 5 Gyrase of ionizing radiation. gamma H2AX appears in all cell types in response to DNA breaks. 53BP only observed in the ganglion cell layer (GC) & inner strata of inner nuclear layer (INL) (seeFigure 1a). Zoom in show foci formation in cells expressing 53BP1. (b) H2AX phosphorylation in all retinal cell types is euchromatin specific. (c) Kinetics of DNA repair in mice retina. Post-Irradiation, mice were sacrificed at indicated times & retinal sections were analysed for gamma H2AX & 53BP1. Left panel show all nuclear layers of retina;right panel show zoom in images to emphasize foci formation. Two mice were used for each condition, which were processed & stained together. Random image were taken using confocal microscope on each eye. Image collected & cropped by CiteAb from the following publication (//pubmed.ncbi.nlm.nih.gov/30345028), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-310202415541979.jpg)
![Immunocytochemistry/ Immunofluorescence: 53BP1 Antibody - BSA Free [NB100-304] - Detection of 53BP1 in CTCs from MBC patients in the DETECT IV trial. (a) Selection of MBC patients with CTC-positivity (HER2-) & primary TNBC or primary HER2-, HR+ breast cancer for Eribulin monotherapy & blood sample collection. Blood samples were drawn before therapy (baseline visit), four, twelve, & 24 weeks after the start of Eribulin treatment (1st, 2nd, & 3rd treatment visit) as well as one year after treatment initiation or during premature termination due to disease progression (final visit). The numbers of patients recruited at the different visits are indicated by black columns, the numbers of CTC+ & CTC- patients among them by red & grey columns, respectively. Note that not all of the patients described in Table 1 entered the study during the baseline visit but during later visits which explains the differences in patient numbers. (b) Evaluation of 53BP1 signals in CTCs. Following EpCAM-based CTC enrichment & immunofluorescence microscopic imaging (Cellsearch®), CTCs (CK+, CD45-) were enumerated & 53BP1-staining intensity assessed per individual CTC as indicated by representative examples. A 53BP1 score per patient sample was calculated from the percentage of CTCs without & with light, moderate or strong staining. PBMC, peripheral blood mononuclear cell (CK-, CD45+). Image collected & cropped by CiteAb from the following publication (//pubmed.ncbi.nlm.nih.gov/32283863), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-310202415533810.jpg)
![Immunocytochemistry/ Immunofluorescence: 53BP1 Antibody - BSA Free [NB100-304] - Treatment w/ exogenous POT1 protein protects LT-HSCs in culture. a Effect of MTM-POT1a on colony formation of HSCs. LT-HSCs (8 week-old) cultured w/ MTM-POT1a for 2 weeks. After culture, Lin− cells isolated & re-cultured in MethoCult™ GF M3434 medium (200 cells per dish). Data are expressed as the mean ± SD (n = 3, *p < 0.01 by Tukey’s test). Representative data from two independent experiments are shown. b, c LT-HSCs (8 week-old) cultured w/ MTM-POT1a or control MTM protein. b Number of total cells & LT-HSCs on day 4, 7, & 10 of culture. Data are expressed as the mean ± SD (n = 6, *p < 0.01 by t-test). c Percentage of Annexin V+PI+ apoptotic cells in LT-HSCs on day 4, 7, & 10 of culture. Data are expressed as the mean ± SD (n = 6, *p < 0.01 by t-test). d LT-HSCs (8 week-old) transduced w/ control shRNA or shPot1a-1. After 2 days of shRNA transduction, GFP+LT-HSCs re-sorted & cultured w/ MTM-POT1a or control MTM protein. After 1 week of culture, Annexin V assay performed. Percentage of Annexin V+PI+ apoptotic cells in GFP+LT-HSC fraction is shown. (n = 3, **p < 0.05 by Tukey’s test). e Immunocytochemical staining of TRF (green), 53BP1 (red), & TOTO3 (blue) in 8 week-old LT-HSCs cultured for 3 weeks (left). Frequencies of TIFs after 3 weeks of culture (right). Data are expressed as the mean ± SD (n = 80–100, *p < 0.01 by t-test). f Representative FACS profiles of 8 week-old LT-HSCs after 3 weeks of culture w/ control MTM protein or MTM-POT1a (left). Numbers of LSK cells & LT-HSCs after 3 week culture (starting from 2400 cells) are shown in right panels. Data are expressed as the mean ± SD (n = 3, *p < 0.01 by t-test). Representative data from five independent experiments are shown Image collected & cropped by CiteAb from the following publication (//pubmed.ncbi.nlm.nih.gov/28986560), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-31020241682196.jpg)
![Immunocytochemistry/ Immunofluorescence: 53BP1 Antibody - BSA Free [NB100-304] - Induction of senescence in hepatocytes causes mitochondrial dysfunction & reduces fatty acid oxidation capacity.Hepatocytes isolated from wild-type C57Bl/6 mice acquire a senescent phenotype 6 days after 10 Gy X-ray irradiation: (a) representative images showing SA-beta -Gal in non-irradiated cells (NOIR) & 6 days after irradiation, Merge: light blue=DAPI, dark blue=SA-beta -Gal, scale bar, 20 μm; (b) frequencies of SA-beta -Gal-positive hepatocytes & (c) representative images showing 53BP1 staining in NOIR & 6 days after irradiation. Merge: blue=DAPI, red=53BP1, scale bar 10 μm; (d) average number of 53BP1 foci per cell are significantly increased 6 days after irradiation. (e) Representative images showing Nile red staining in NOIR & 6 days after IR. Merge: blue=DAPI, red=Nile red, scale bar scale bar 20 μm. (f) Average fluorescence intensity of Nile red staining in senescent or non-senescent hepatocytes. (g) Change in OCR in senescent or non-senescent hepatocytes after addition of the fatty acid palmitate as substrate; (h) change in OCR in senescent or non-senescent hepatocytes after inhibition of fatty acid oxidation by etomoxir. Data in b,g,h are mean±s.e.m. & in d,f are mean±s.d. with 3–4 animals per group. Significant differences (t-test) are indicated with *P≤0.05 & **P≤0.001. Image collected & cropped by CiteAb from the following publication (//pubmed.ncbi.nlm.nih.gov/28608850), licensed under a CC-BY license. Not internally tested by Novus Biologicals.](http://images.novusbio.com/fullsize/nb100-304_rabbit-polyclonal-53bp1-antibody-310202415535184.jpg)
![Immunocytochemistry/Immunofluorescence: TP53INP2 Antibody [NBP1-71704] - TP53INP2 antibody was tested at 1:200 in HeLa cells with FITC (green). Nuclei and actin were counterstained with Dapi (blue) and Phalloidin (red).](http://images.novusbio.com/fullsize/TP53INP2-Antibody-Immunocytochemistry-Immunofluorescence-NBP1-71704-img0005.jpg "Immunocytochemistry/Immunofluorescence: TP53INP2 Antibody [NBP1-71704] - TP53INP2 antibody was tested at 1:200 in HeLa cells with FITC (green). Nuclei and actin were counterstained with Dapi (blue) and Phalloidin (red).")
![Immunohistochemistry: TP53INP2 Antibody [NBP1-71704] - Staining of TP53INP2 in mouse prostate.](http://images.novusbio.com/fullsize/TP53INP2-Antibody-Immunohistochemistry-NBP1-71704-img0006.jpg)
![Western Blot: TP53I11 Antibody [NBP2-93452] - Western blot analysis of extracts of various cell lines, using TP53I11 antibody (NBP2-93452) at 1:1000 dilution. Secondary antibody: HRP Goat Anti-Rabbit IgG (H+L) at 1:10000 dilution. Lysates/proteins: 25ug per lane. Blocking buffer: 3% nonfat dry milk in TBST. Detection: ECL Basic Kit. Exposure time: 10s.](http://images.novusbio.com/fullsize/TP53I11 Antibody-Western Blot-NBP2-93452-img0004.jpg "Western Blot: TP53I11 Antibody [NBP2-93452] - Western blot analysis of extracts of various cell lines, using TP53I11 antibody (NBP2-93452) at 1:1000 dilution. Secondary antibody: HRP Goat Anti-Rabbit IgG (H+L) at 1:10000 dilution. Lysates/proteins: 25ug per lane. Blocking buffer: 3% nonfat dry milk in TBST. Detection: ECL Basic Kit. Exposure time: 10s.")
![Immunohistochemistry-Paraffin: TP53I11 Antibody [NBP2-93452] - Paraffin-embedded rat spleen using TP53I11 .](http://images.novusbio.com/fullsize/TP53I11-Antibody-Immunohistochemistry-Paraffin-NBP2-93452-img0003.jpg)
![Immunohistochemistry-Paraffin: TP53I11 Antibody [NBP2-93452] - Paraffin-embedded Human lymph node tumors using TP53I11 .](http://images.novusbio.com/fullsize/TP53I11-Antibody-Immunohistochemistry-Paraffin-NBP2-93452-img0001.jpg)
![Immunohistochemistry-Paraffin: TP53I11 Antibody [NBP2-93452] - Paraffin-embedded mouse heart using TP53I11 .](http://images.novusbio.com/fullsize/TP53I11-Antibody-Immunohistochemistry-Paraffin-NBP2-93452-img0002.jpg)
![Immunohistochemistry-Paraffin: TP53TG5 Antibody [NBP2-13467] - Staining of human testis shows high expression.](http://images.novusbio.com/fullsize/TP53TG5-Antibody-Immunohistochemistry-Paraffin-NBP2-13467-img0004.jpg "Immunohistochemistry-Paraffin: TP53TG5 Antibody [NBP2-13467] - Staining of human testis shows high expression.")
![Immunohistochemistry: TP53TG5 Antibody [NBP2-13467] - Staining of human heart muscle shows strong cytoplasmic positivity in myocytes.](http://images.novusbio.com/fullsize/TP53TG5-Antibody-Immunohistochemistry-NBP2-13467-img0002.jpg)
![Immunohistochemistry-Paraffin: TP53TG5 Antibody [NBP2-13467] - Staining of human prostate shows low expression as expected.](http://images.novusbio.com/fullsize/TP53TG5-Antibody-Immunohistochemistry-Paraffin-NBP2-13467-img0003.jpg)
![Western Blot: TP53TG5 Antibody (Z38P1E4/C7) [NBP2-50338]](http://images.novusbio.com/fullsize/TP53TG5-Antibody-Z38P1E4-C7-Western-Blot-NBP2-50338-img0001.jpg "Western Blot: TP53TG5 Antibody (Z38P1E4/C7) [NBP2-50338]")
![Immunohistochemistry-Paraffin: TP53TG5 Antibody (Z38P1E4/C7) [NBP2-50338] - Shows cytoplasmic immunostaining in breast cancer tissues sections.](http://images.novusbio.com/fullsize/TP53TG5-Antibody-Z38P1E4-C7-Immunohistochemistry-Paraffin-NBP2-50338-img0002.jpg)
![Immunocytochemistry/Immunofluorescence: TP53I11 Antibody [NBP2-32593] - Immunofluorescent staining of human cell line A549 shows localization to endoplasmic reticulum & the Golgi apparatus. Antibody staining is shown in green.](http://images.novusbio.com/fullsize/TP53I11-Antibody-Immunocytochemistry-Immunofluorescence-NBP2-32593-img0007.jpg "Immunocytochemistry/Immunofluorescence: TP53I11 Antibody [NBP2-32593] - Immunofluorescent staining of human cell line A549 shows localization to endoplasmic reticulum & the Golgi apparatus. Antibody staining is shown in green.")
![Immunohistochemistry-Paraffin: TP53I11 Antibody [NBP2-32593] - Staining of human cerebellum shows strong cytoplasmic positivity in Purkinje cells.](http://images.novusbio.com/fullsize/TP53I11-Antibody-Immunohistochemistry-Paraffin-NBP2-32593-img0008.jpg)
![Western Blot: TP53I13 Antibody [NBP2-94004] - Analysis of extracts of various cell lines, using TP53I13 at 1:1000 dilution. Secondary antibody: HRP Goat Anti-Rabbit IgG (H+L) at 1:10000 dilution. Lysates/proteins: 25ug per lane. Blocking buffer: 3% nonfat dry milk in TBST. Detection: ECL Basic Kit . Exposure time: 10s.](http://images.novusbio.com/fullsize/TP53I13-Antibody-Western-Blot-NBP2-94004-img0002.jpg "Western Blot: TP53I13 Antibody [NBP2-94004] - Analysis of extracts of various cell lines, using TP53I13 at 1:1000 dilution. Secondary antibody: HRP Goat Anti-Rabbit IgG (H+L) at 1:10000 dilution. Lysates/proteins: 25ug per lane. Blocking buffer: 3% nonfat dry milk in TBST. Detection: ECL Basic Kit . Exposure time: 10s.")
![Immunocytochemistry/Immunofluorescence: TP53I13 Antibody [NBP2-94004] - Analysis of L929 cells using TP53I13 at dilution of 1:100. Blue: DAPI for nuclear staining.](http://images.novusbio.com/fullsize/TP53I13-Antibody-Immunocytochemistry-Immunofluorescence-NBP2-94004-img0001.jpg)
![Western Blot: TP53INP2 Antibody [NBP2-84309] - WB Suggested Anti-TP53INP2 Antibody Titration: 0.2-1 ug/ml. ELISA Titer: 1:312500. Positive Control: Human heart](http://images.novusbio.com/fullsize/TP53INP2-Antibody-Western-Blot-NBP2-84309-img0001.jpg "Western Blot: TP53INP2 Antibody [NBP2-84309] - WB Suggested Anti-TP53INP2 Antibody Titration: 0.2-1 ug/ml. ELISA Titer: 1:312500. Positive Control: Human heart")
![Western Blot: TP53INP2 Antibody [NBP2-84309] - Host: Rabbit. Target Name: TP53INP2. Sample Tissue: Human A549 Whole Cell. Antibody Dilution: 1ug/ml](http://images.novusbio.com/fullsize/TP53INP2-Antibody-Western-Blot-NBP2-84309-img0002.jpg)
![Immunocytochemistry/Immunofluorescence: TP53TG5 Antibody [NBP3-17044] - Staining of human cell line CACO-2 shows localization to nucleoli rim.](http://images.novusbio.com/fullsize/TP53TG5-Antibody-Immunocytochemistry-Immunofluorescence-NBP3-17044-img0001.jpg "Immunocytochemistry/Immunofluorescence: TP53TG5 Antibody [NBP3-17044] - Staining of human cell line CACO-2 shows localization to nucleoli rim.")
![Immunohistochemistry-Paraffin: TP53I11 Antibody [NBP2-32491] - Staining of human kidney shows strong luminal membranous positivity in cells in tubules.](http://images.novusbio.com/fullsize/TP53I11-Antibody-Immunohistochemistry-Paraffin-NBP2-32491-img0005.jpg "Immunohistochemistry-Paraffin: TP53I11 Antibody [NBP2-32491] - Staining of human kidney shows strong luminal membranous positivity in cells in tubules.")