Transcription initiation mediated by initiator binding protein in Saccharomyces cerevisiae

Tomoko Ohishi-Shofuda, Yuriko Matsuzaki, Ken Ichi Yano, Hiroshi Sakurai, Toshio Fukasawa

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Many instances of the initiator element in the core promoter of protein-coding genes have been reported in mammalian cells and their viruses, but only one has been reported in the yeast Saccharomyces cerevisiae at the GAL80 gene. The initiator element of GAL80 directs transcription by itself and interacts with a nuclear protein designated yeast initiator binding factor (yIF). Here we show that yIF in a partially purified sample binds the sequence from -18 to +10 of GAL80. By employing a selected and amplified binding procedure, we have determined the preferred sequence for yIF binding to be -2 CACTN +3 (N indicates any nucleotide). Binding affinity of selected sequences to yIF correlated with their initiator-directed transcription in vivo suggesting that the yIF-initiator interaction mediates transcription from the initiator in yeast. We also suggest that sequences flanking the preferred sequence affect both yIF binding and initiator activity.

Original languageEnglish
Pages (from-to)157-163
Number of pages7
JournalBiochemical and Biophysical Research Communications
Volume255
Issue number1
DOIs
Publication statusPublished - 1999 Feb 5

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Transcription
Yeast
Saccharomyces cerevisiae
Carrier Proteins
Yeasts
Genes
Nuclear Proteins
Viruses
Nucleotides
Cells

ASJC Scopus subject areas

  • Biochemistry
  • Biophysics
  • Molecular Biology

Cite this

Transcription initiation mediated by initiator binding protein in Saccharomyces cerevisiae. / Ohishi-Shofuda, Tomoko; Matsuzaki, Yuriko; Yano, Ken Ichi; Sakurai, Hiroshi; Fukasawa, Toshio.

In: Biochemical and Biophysical Research Communications, Vol. 255, No. 1, 05.02.1999, p. 157-163.

Research output: Contribution to journalArticle

Ohishi-Shofuda, Tomoko ; Matsuzaki, Yuriko ; Yano, Ken Ichi ; Sakurai, Hiroshi ; Fukasawa, Toshio. / Transcription initiation mediated by initiator binding protein in Saccharomyces cerevisiae. In: Biochemical and Biophysical Research Communications. 1999 ; Vol. 255, No. 1. pp. 157-163.
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