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    J Biol Chem. 1994 Sep 16;269(37):23135-40.

    Yeast Taf170 is encoded by MOT1 and exists in a TATA box-binding protein (TBP)-TBP-associated factor complex distinct from transcription factor IID.

    Source

    Department of Molecular Physiology and Biophysics, Vanderbilt University, School of Medicine, Nashville, Tennessee 37232-0615.

    Abstract

    Our characterization of the Saccharomyces cerevisiae TATA box-binding protein (TBP) has led to the identification of nine specific yeast TBP-associated factors (TAFs) ranging in size from 170 to 25 kDa. The amino acid sequence derived from a purified TAF with an apparent M(r) of 170,000 indicates that yeast Taf170 is encoded by the essential yeast gene MOT1. We describe in this report a series of experiments that demonstrate that the protein encoded by MOT1 is a bona fide yeast TAF and that Taf170 forms a separate complex with TBP distinct from the RNA polymerase II-specific multisubunit transcription factor IID TBP-TAF complex. The significance of this unique TBP-Taf170 complex regarding transcriptional regulation is discussed.

    PMID:
    8083216
    [PubMed - indexed for MEDLINE]

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