H3S10p | Histone H3 (p Ser10) (affinity purified)
AS16 3635-10 | clonality: polyclonal | host: rabbit | reactivity:human
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|Recommended dilution||2 µg/million cells (ChIP), 1: 20 000 (Dot), 1: 2000 (IF), 1: 100 (WB)|
|Expected | apparent MW||
|Predicted reactivity||chicken, D. melanogaster, mouse, plant, rat, Xenopus sp.|
|Not reactive in||No confirmed exceptions from predicted reactivity known at the moment|
|Additional information||To be added when available|
|Selected references||To be added when available, antibody released in March 2016.|
ChIP: results obtained with anti-H3S10p polyclonal antibodies.
Left panel: ChIP assays were performed using human HeLa cells treated with colcemid to block the cells in metaphase, anti-H3S10p antibodies and optimized PCR primer sets for qPCR. ChIP was performed on sheared chromatin from 10 000 cells using the SX-8G IP-Star automated system. A titration of the antibody consisting of 1, 2, 5, and 10 μ g per ChIP experiment was analysed. IgG (5 μ g/IP) was used as negative IP control. QPCR was performed with primers for the promoter of the active genes c-fos and RPL30. Figure shows the recovery, expressed as a % of input (the relative amount of immunoprecipitated DNA compared to input DNA after qPCR analysis).
Right panel: ChIP was performed as described above using 2 μ g of H3S10p antibody and sheared chromatin from 10 000 HeLa cells treated with colcemid (sample 1) or from 10 000 untreated cells (sample 2). QPCR was performed with primers for the promoter of the active genes c-fos and RPL30, and for the Sat2 satellite repeat region.
Dot Blot: analysis was performed to test the cross reactivity of this antibody with peptides containing other modifications of histone H3 or the unmodified H3S10 sequence. One hundred to 0.2 pmol of the peptide containing the respective histone modification were spotted on a membrane. The antibody was used at a dilution of 1:20 000. Image shows a high specificity of the antibody for the modification of interest. The antibody does not recognize the H3S10p modification if the neighboring K9 is acetylated or trimethylated.
Immunofluorescence: using anti-H3S10p antibodies. Human osteosarcoma (U2OS) cells were stained with this antibody and with DAPI. Cells were fixed with 3.7% formaldehyde in PBS for 20’ at RT, followed by a 20’ permeabilization with 0.5% Triton X-100 in PBS and blocked PBS/TX-100 containing 5% normal goat serum Figure 5A: cells were immunofluorescently labeled with the H3S10p antibody (left), diluted 1:2 000 in blocking buffer followed by an anti-rabbit antibody conjugated to Alexa568 or with DAPI (right), which specifically labels DNA. Figure 5B: staining of the cells with the H3S10p antibody after incubation of the antibody with 2 μM blocking peptide containing the unmodified H3S10 sequence, the phosphorylated H3S10 and the phosphorylated H3T11, respectively.
Western blot: was done using anti-H3S10p antibodies and HeLa cells were treated with colcemid, which blocks the cell cycle in metaphase and 15 μ g of histone extracts of the cells were analysed by Western blot this antibody diluted 1:1 000 in TBS-Tween containing 5% skimmed milk. The position of the protein of interest is indicated on the right; the marker (in kDa) is shown on the left.
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