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    Nature. 1999 May 20;399(6733):276-9.

    Mammalian Srb/Mediator complex is targeted by adenovirus E1A protein.

    Boyer TG, Martin ME, Lees E, Ricciardi RP, Berk AJ.

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    Molecular Biology Institute, UCLA, Los Angeles, California 90095-1570, USA.

    Abstract

    Adenovirus E1A proteins prepare the host cell for viral replication, stimulating cell cycling and viral transcription through interactions with critical cellular regulatory proteins such as RB and CBP. Here we show that the E1A zinc-finger domain that is required to activate transcription of viral early genes binds to a host-cell multiprotein complex containing homologues of yeast Srb/Mediator proteins. This occurs through a stable interaction with the human homologue of Caenorhabditis elegans SUR-2, a protein required for many developmental processes in the nematode. This human Srb/Mediator complex stimulates transcription in vitro in response to both the E1A zinc-finger and the herpes simplex virus VP16 activation domains. Interaction with human Sur-2 is also required for transcription to be activated by the activation domain of a transcription factor of the ETS-family in response to activated mitogen-activated protein (MAP) kinase.

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    PMID:
    10353252
    [PubMed - indexed for MEDLINE]

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