p300, Active, Recombinant, Human, GST-Tag (KAT3B, Histone Acetyltransferase p300, p300 HAT, E1A-associated Protein p300, EP300)

Functions as 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 cAMP-gene regulation by binding specifically to phosphorylated CREB protein. Also functions as acetyltransferase for nonhistone targets. Acetylates 'Lys-131' of ALX1 and acts as its coactivator in the presence of CREBBP. Acetylates SIRT2 and is proposed to indirectly increase the transcriptional activity of TP53 through acetylation and subsequent attenuation of SIRT2 deacetylase function. Acetylates HDAC1 leading to its inactivation and modulation of transcription. Acts as a TFAP2A-mediated transcriptional coactivator in presence of CITED2. Plays a role as a coactivator of NEUROD1-dependent transcription of the secretin and p21 genes and controls terminal differentiation of cells in the intestinal epithelium. Promotes cardiac myocyte enlargement. Can also mediate transcriptional repression. Binds to and may be involved in the transforming capacity of the adenovirus E1A protein. In case of HIV-1 infection, it is recruited by the viral protein Tat. Regulates Tat's transactivating activity and may help inducing chromatin remodeling of proviral genes. Acetylates FOXO1 and enhances its transcriptional activity.\n\nSource:\nRecombinant corresponding to aa965-1810 from human p300, fused to GST-tag at N-terminal, expressed in E. coli.\n\nMolecular Weight:\n~125kD\n\nApplications:\nSuitable for use in the study of enzyme kinetics, screening inhibitors, and selectivity profiling. Other applications not tested.\n\nRecommended Dilution:\nOptimal dilutions to be determined by the researcher.\n\nSpecific Activity:\n~357pmol/min/ug\n\nStorage and Stability:\nAliquot to avoid repeated freezing and thawing and store at -70 degrees C. Aliquots are stable for 6 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

Prices direct from United States Biological

Quick response times

Exclusive Biosave savings/discounts

SPECIFICATIONS

Catalog Number

137317

Size

50ug

Form

Supplied as a liquid in 40mM Tris-HCl, pH 8.0, 110mM sodium chloride, 2.2mM potassium chloride, 200mM imidazole, 20% glycerol.

Purity

Purified (~44%)

References

1. Gui, Y., et al., Nat. Genet. 2011 Aug 7; 43(9): 875-878. 2. Morin, R.D., et al., Nature. 2011 Jul 27; 476(7360): 298-303. 3. Zhao, Z., et al., Brain Res. Bull. 2011 Oct 10; 86(3-4): 189-194.