160 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
NCOA3/SRC3 (nuclear receptor coactivator 3/steroid receptor coactivator 3 (SRC3)) is a 155 kD member of the p160/steroid receptor coactivator family containing a nuclear localization sequence, bHLH, and PAS domain. There are two reported isoforms of this protein. NCOA3/SRC3 is localized mainly in the cytoplasm, with weak nuclear expression. The protein is translocated to the nucleus upon phosphorylation. NCOA3/SRC3 is widely expressed with high expression in the heart, skeletal muscle, pancreas, and placenta and low expression in the brain. NCOA3/SRC3 is expressed at very low levels in the lung, liver, and kidney and overexpressed in breast and ovarian cancers. This protein has histone acetyltransferase activity and functions as a transcriptional coactivator for steroid and nuclear hormone receptors. Phosphorylation by I kappaB kinase enhances coactivator function. Acetylation by CREB-BP disrupts interaction with nuclear receptors. NCOA3/SRC3 forms a multisubunit coactivation complex with NCOA2 IKKA, IKKB, IKBKG and histone acetyltransferase protein CREB binding protein and has also been shown to interact with PCAF.
This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.
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