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Identification and characterization of a TFIID-like multiprotein complex from Saccharomyces cerevisiae.
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1995 (English)In: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, E-ISSN 1091-6490, Vol. 92, no 18, 8224-8 p.Article in journal (Refereed) Published
Abstract [en]

Although the mechanisms of transcriptional regulation by RNA polymerase II are apparently highly conserved from yeast to man, the identification of a yeast TATA-binding protein (TBP)-TBP-associated factor (TAFII) complex comparable to the metazoan TFIID component of the basal transcriptional machinery has remained elusive. Here, we report the isolation of a yeast TBP-TAFII complex which can mediate transcriptional activation by GAL4-VP16 in a highly purified yeast in vitro transcription system. We have cloned and sequenced the genes encoding four of the multiple yeast TAFII proteins comprising the TBP-TAFII multisubunit complex and find that they are similar at the amino acid level to both human and Drosophila TFIID subunits. Using epitope-tagging and immunoprecipitation experiments, we demonstrate that these genes encode bona fide TAF proteins and show that the yeast TBP-TAFII complex is minimally composed of TBP and seven distinct yTAFII proteins ranging in size from M(r) = 150,000 to M(r) = 25,000. In addition, by constructing null alleles of the cloned TAF-encoding genes, we show that normal function of the TAF-encoding genes is essential for yeast cell viability.

Place, publisher, year, edition, pages
1995. Vol. 92, no 18, 8224-8 p.
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URN: urn:nbn:se:umu:diva-42467PubMedID: 7667272OAI: oai:DiVA.org:umu-42467DiVA: diva2:409302
Available from: 2011-04-07 Created: 2011-04-07 Last updated: 2017-12-11

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