p300 Rabbit Polyclonal Antibody

Datasheet

MSDS

Key features and details

Rabbit polyclonal antibody to p300

Target: p300
Source/Host: Rabbit
Reactivity: Human,Mouse
Clonality: Polyclonal
Applications: WB, IHC
Conjugation: Unconjugated
Storage: at-20°C

Brand:

CAT.NO. : APA12079

US$ Please choose

Size:

50μL 100μL

Trail, Bulk size or Custom requests Please contact us

Product Details

Background

Functions as a histone acetyltransferase and regulates transcription via chromatin remodeling . Acetylates all four core histones in nucleosomes . Histone acetylation gives an epigenetic tag for transcriptional activation . Mediates acetylation of histone H3 at 'Lys-122' (H3K122ac), a modification that localizes at the surface of the histone octamer and stimulates transcription, possibly by promoting nucleosome instability . Mediates acetylation of histone H3 at 'Lys-18' and 'Lys-27' (H3K18ac and H3K27ac, respectively) . Also able to acetylate histone lysine residues that are already monomethylated on the same side chain to form N6-acetyl-N6-methyllysine (Kacme), an epigenetic mark of active chromatin associated with increased transcriptional initiation .

Application

To ensure optimal assay performance, AREX recommends conducting reagent titration tailored to each testing system for optimal detection results.

WB	1:500 - 1:1000
IHC	1:100 - 1:200

*Results are sample-specific. Please refer to your local assay conditions and test parameters for reference.

Overview

Description	Rabbit polyclonal antibody to p300
Specificity	Recognizes endogenous levels of p300 protein.
Antibody Type	Primary antibody
Imnunogen	KLH-conjugated synthetic peptide encompassing a sequence within the center region of human p300. The exact sequence is proprietary.
Purification	The antibody was purified by immunogen affinity chromatography.
Molecular Weight	Predicted: 264 kD; Observed: 264 kD
Form/Buffer	Liquid in 0.42% Potassium phosphate, 0.87% Sodium chloride, pH 7.3, 30% glycerol, and 0.01% sodium azide.
Alternative Names	P300; Histone acetyltransferase p300; p300 HAT; E1A-associated protein p300
Gene Symbol	EP300
Entrez Gene	2033(Human); 328572(Mouse)
SwissProt	Q09472(Human); B2RWS6(Mouse)

*AREX continuously optimizes our products. Webpage content may not reflect the latest updates. For inquiries, please contact info@arexbio.com or your local distributor.
*Clone Number, Reactivity, Source/Host and Clonality can be found in the product name and Key Features section above.

Data

Western blot analysis of p300 expression in Hela (A), HEK293T (B) whole cell lysates. (Predicted band size: 264 kD; Observed band size: 264 kD)

Immunohistochemical analysis of p300 staining in human breast cancer formalin fixed paraffin embedded tissue section. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH 6.0). The section was then incubated with the antibody at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.

Storage

Store at 4°C short term. For long term storage, store at -20°C, avoiding freeze/thaw cycles.

Note

For Research Use Only. Not for diagnostic, therapeutics, prophylactic or in vivo use.

FAQs

What are the main types of research antibodies and how do they differ?

Research antibodies are mainly divided into monoclonal antibodies and polyclonal antibodies. Monoclonal antibodies typically offer higher specificity and better batch-to-batch consistency, while polyclonal antibodies often provide stronger affinity but may show more variation between batches. The choice depends on your specific experimental needs.

How can I tell if a research antibody is suitable for my experiment?

It is recommended to carefully review the product datasheet for validated applications, species reactivity, recommended dilutions, and published references. For new antibodies, performing a small-scale validation with positive control samples is usually helpful.

Can improper storage of research antibodies affect experimental results?

Yes. Antibodies are sensitive to temperature, repeated freeze-thaw cycles, and contamination. Improper storage may lead to reduced activity, increased background, or weaker signals. It is best to follow the storage instructions provided in the product datasheet.

Why doesn’t the recommended dilution in the datasheet work well in my experiment?

The recommended dilution is based on the supplier’s test conditions. Factors such as sample type, fixation method, and detection system in your lab can influence the optimal working concentration. Performing a dilution series optimization in your own system is often necessary.

What precautions should I take when using a newly purchased research antibody for the first time?

It is advisable to briefly centrifuge the antibody (especially concentrated or lyophilized ones), then perform a small-scale pilot experiment using the recommended conditions. Recording the batch number and usage date is also helpful for future tracking.

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