Stress factors acting at the level of the plasma membrane induce transcription via the stress response element (STRE) of the yeast Saccharomyces cerevisiae

被引:53
作者
Moskvina, E
Imre, EM
Ruis, H
机构
[1] Univ Vienna, Inst Biochem & Mol Zellbiol, Vienna Bioctr, A-1030 Vienna, Austria
[2] Ludwig Boltzmann Forschungsstelle Biochem, A-1030 Vienna, Austria
关键词
D O I
10.1046/j.1365-2958.1999.01438.x
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
A variety of stress factors induces transcription via the stress response element (STRE) present in control regions of a number of genes of the yeast Saccharomyces cerevisiae. Induction of transcription involves nuclear translocation of the STRE-binding transcription activators Msn2p and Msn4p. The primary cellular events triggering this translocation are presently not well understood, In this investigation, we have observed that a number of factors acting at the level of the yeast plasma membrane, including the antifungal agent nystatin, the steroidal alkaloid tomatine, benzyl alcohol, a number of detergents and the plasma membrane H+-ATPase inhibitor diethylstilbestrol or mutations in the PMA1 gene encoding the plasma membrane ATPase, induce Msn2p nuclear accumulation and STRE-dependent transcription. At least some of the stress factors acting via STREs cause an increase in plasma membrane permeability, leading to a decrease in membrane potential, which might be a primary cellular stress signal. A decrease in internal pH triggered by permeabilization of the plasma membrane or a change in cAMP levels are at least not obligatory factors in intracellular stress signal transduction. The signal transduction pathway transmitting the signal generated at the plasma membrane to Msn2p is still unknown.
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页码:1263 / 1272
页数:10
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