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  • Title: The candidate proto-oncogene bcl-3 encodes a transcriptional coactivator that activates through NF-kappa B p50 homodimers.
    Author: Fujita T, Nolan GP, Liou HC, Scott ML, Baltimore D.
    Journal: Genes Dev; 1993 Jul; 7(7B):1354-63. PubMed ID: 8330739.
    Abstract:
    The candidate proto-oncogene bcl-3 encodes a protein that shares structural features with I kappa B-alpha and other proteins that bind to members of the Rel protein family. Here, we show that in contrast to the inhibitory activity of I kappa B-alpha, the bcl-3 gene product superactivates NF-kappa B p50 homodimer-mediated gene expression both in vivo and in vitro. BCL-3 protein can, as well, selectively associate with p50 homodimers in the presence of DNA containing a kappa B motif. These results strongly suggest that BCL-3 can act as a transcriptional coactivator, acting through DNA-bound p50 homodimers.
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