ELISA, Immunogen, SDS-PAGE, WB, Bioactivity testing in progress
Species
Homo sapiens (Human)
Nature
Recombinant
Endotoxin level
Please contact with the lab for this information.
Purity
>90% as determined by SDS-PAGE.
Predicted molecular weight
16.25 kDa
Form
Lyophilized
Storage buffer
Lyophilized from a solution in PBS pH 7.4, 0.02% NLS, 1 mM EDTA, 4% Trehalose, 1% Mannitol.
Please refer to the specific buffer information in the hardcopy of datasheet or the lot-specific COA.
Reconstitution
Reconstitute in sterile water for a stock solution. Adjust the volume of sterile water so that, after reconstitution, the final stock concentration matches the value indicated on the product label or datasheet.
RECONSTITUTION PROTOCOL 1. Allow the product to be reconstituted and the reconstitution diluent to reach room temperature. 2. Tap or briefly centrifuge the product vial before opening to dislodge any lyophilized material that may be dispersed on the wall or cap of the vial. 3. Use the diluent and stock concentration recommended in the product datasheet. If preparing a stock concentration higher than recommended, contact Technical Service. 4. After adding the diluent, re-cap the vial and invert gently by hand or place on a slow rocking platform to allow the reconstitution diluent to coat all the surfaces inside the vial. Note: Do not mix by vortexing or by pipetting the material up and down. 5. Allow the vial to sit at room temperature with gentle agitation for at least 15 minutes before aliquotting or using. 6. Store the reconstituted material in single use aliquots in polypropylene or siliconized tubes. Aliquots of 10 μL or larger are recommended.
Shipping
In general, proteins are provided as lyophilized powder/frozen liquid. They are shipped out with dry ice/blue ice unless customers require otherwise.
Stability and Storage
Use a manual defrost freezer and avoid repeated freeze thaw cycles. Store at 2 to 8°C for frequent use. Store at -20 to -80°C for twelve months from the date of receipt.
Alternate Names
Histone crotonyltransferase p300, Protein lactyltransferas p300, Protein propionyltransferase p300, Histone acetyltransferase p300, Protein 2-hydroxyisobutyryltransferase p300, EP300, p300 HAT, Histone butyryltransferase p300, P300, E1A-associated protein p300
Background
Histone acetyltransferase p300 (EP300) is a ~264 kDa protein. 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).
1. Tropberger, P. et al. (2013) Cell 152, 859-72. PMID: 23415232
2. Delvecchio, M. et al. (2013) Nature structural & molecular biology 20, 1040-6. PMID: 23934153
3. Tian, Y. et al. (2025) Nature 641, 779-787. PMID: 40240600
5. Jin, Q. et al. (2011) The EMBO journal 30, 249-62. PMID: 21131905
6. Hatzi, K. et al. (2013) Cell reports 4, 578-88. PMID: 23911289
8. Iioka, T. et al. (2003) Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research 18, 1419-29. PMID: 12929931
9. Yuan, ZL. et al. (2005) Science (New York, N.Y.) 307, 269-73. PMID: 15653507
10. Ray, S. et al. (2005) Gastroenterology 129, 1616-32. PMID: 16285960
Note
For research use only.
Images
SDS-PAGE
SDS-PAGE for Recombinant Human EP300 Protein, N-His
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