期刊
FEBS LETTERS
卷 582, 期 29, 页码 3991-3996出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.febslet.2008.10.051
关键词
Thiamin pyrophosphate; Transcriptional regulation; PDC2; THI3; Saccharomyces cerevisiae
资金
- Japan Society for the Promotion of Science [18580095]
- Grants-in-Aid for Scientific Research [18580095] Funding Source: KAKEN
Yeast genes involved in thiamin pyrophosphate (TPP) synthesis are transcriptionally induced in response to thiamin starvation. In this system, three proteins (Thi2p, Thi3p, and Pdc2p) act as positive regulatory factors. Thi3p is a TPP-binding protein and upregulates THI genes expression when TPP is not bound. We found here that Pdc2p could transactivate gene expression and interact with Thi3p, both of which were enhanced by thiamin starvation. This enhancement of the transactivation activity was not observed in a thi3 strain. When the C-terminal region containing the deduced Thi3p-interacting domain was truncated, Pdc2p expressed striking transactivation activity in a Thi3p-independent fashion. We explored the hypothesis that Thi3p causes a conformational change in Pdc2p leading to full transactivation activity under favorable conditions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据