Promoter structure-dependent functioning of the general transcription factor IIE in Saccharomyces cerevisiae.

The Journal of Biological Chemistry
H SakuraiT Fukasawa

Abstract

General transcription factor (TF) IIE is an essential component of the basal transcription complex for protein-encoding genes, which is widely conserved in eukaryotes. Here we analyzed requirement for TFIIE for transcription in vivo by using yeast Saccharomyces cerevisiae cells harboring mutations in the TFA1 gene encoding the larger one of the two subunits of TFIIE. Deletion analysis indicated that the N-terminal half of Tfa1 protein has an essential function to support the cell growth. In a temperature-sensitive tfa1 mutant cell, the steady-state level of bulk poly(A)+ RNA decreased rapidly at the restrictive temperature. Surprisingly, levels of several mRNAs, whose transcription is directed by the promoters lacking the typical TATA sequence, were not affected in the mutant cells at that temperature. This promoter-specific functioning of TFIIE was reproduced in a cell-free system composed of TFIIE-depleted nuclear extracts. These results strongly suggest that requirement for TFIIE varies in each gene depending on the promoter structures in vivo.

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Citations

Jul 4, 2012·Nature Structural & Molecular Biology·Sebastian GrünbergSteven Hahn
Feb 1, 2003·Genes to Cells : Devoted to Molecular & Cellular Mechanisms·Hiroshi Sakurai, Toshio Fukasawa
Jun 17, 1998·Proceedings of the National Academy of Sciences of the United States of America·K YokomoriR Tjian
Jan 31, 2004·Genes to Cells : Devoted to Molecular & Cellular Mechanisms·Hiroshi SakuraiToshio Fukasawa
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Jul 24, 2021·Cell·Craig D Kaplan, Karen M Arndt

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