p300 (UniProt/Swiss-Prot entry Q09472) is a histone acetyltransferase that regulates transcription via chromatin remodelling. As such it is important for cell proliferation and differentiation. p300 is able to acetylate all four core histones in nucleosomes. Acetylation of histones is associated with transcriptional activation. p300 also acetylates non-histone proteins such as HDAC1 leading to its inactivation and modulation of transcription. It has also been identified as a co-activator of HIF1A (hypoxiainducible factor 1 alpha), and thus plays a role in the stimulation of hypoxia-induced genes such as VEGF. Defects in the p300 gene are a cause of Rubinstein-Taybi syndrome and may also play a role in epithelial cancer.
p300 Antibody - ChIP-seq Grade
Alternative names: EP300, KAT3B, RSTS2
Monoclonal antibody raised in mouse against human p300 (E1A Binding Protein P300) by DNA immunization in which the C-terminal part of the protein was cloned and expressed.
| Lot | 002 |
|---|---|
| Concentration | 1.8 µg/µl |
| Species reactivity | Human. Other species: not tested. |
| Type | Monoclonal |
| Purity | Protein A purified monoclonal antibody |
| Host | Mouse |
| Storage Conditions | Store at -20°C; for long storage, store at -80°C. Avoid multiple freeze-thaw cycles. |
| Storage Buffer | PBS containing 0.05% azide. |
| Precautions | This product is for research use only. Not for use in diagnostic or therapeutic procedures. |
| Applications | Suggested dilution | References |
|---|---|---|
| ChIP/ChIP-seq * | 2-5 μg/ChIP | Fig 1, 2 |
| Western Blotting | Not Recommended |
* Please note that the optimal antibody amount per IP should be determined by the end-user. We recommend testing 1-10 μg per IP.
- Validation Data
Figure 1. ChIP results obtained with the Diagenode monoclonal antibody directed against p300
ChIP was performed using HeLa cells, the Diagenode monoclonal antibody against p300 (cat. No. C15200211) and optimized PCR primer sets for qPCR. ChIP was performed with the “iDeal ChIP-seq” kit (cat. No. C01010055), using sheared chromatin from 4 million cells. A titration of the antibody consisting of 2, 5 and 10 µg per ChIP experiment was analysed. IgG (2 µg/IP) was used as negative IP control. Quantitative PCR was performed with primers for two genomic regions near the ANKRD32 and IRS2 genes, used as positive controls, and for the coding region of the inactive MYOD1 gene and an intergeic region on chromosome 11, used as negative controls. Figure 1 shows the recovery, expressed as a % of input (the relative amount of immunoprecipitated DNA compared to input DNA after qPCR analysis).
A.
B.
C.
D.
Figure 2. ChIP-seq results obtained with the Diagenode monoclonal antibody directed against p300
ChIP was performed with 5 µg of the Diagenode antibody against p300 (cat. No. C15200211) on sheared chromatin from 4 million HeLa cells as described above. The IP'd DNA was subsequently analysed on an Illumina NovaSeq. Library preparation, cluster generation and sequencing were performed according to the manufacturer's instructions. The 50 bp tags were aligned to the human genome using the BWA algorithm. Figure 2 shows the peak distribution along the complete sequence and a 3 mb region of chromosome 5 (figure 2A and B) and in two regions surrounding the IRS2 and ANKRD32 (SLF1) positive control genes (figure 2C and D). The position of the amplicon used for ChIP-qPCR is indicated by an arrow.
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