Feed-Forward Regulation of a Cell Fate Determinant by an RNA-Binding Protein Generates Asymmetry in Yeast

被引：27

作者：

Wolf, Joshua J. ^{[1
]}

Dowell, Robin D. ^{[2
]}

Mahony, Shaun ^{[2
]}

Rabani, Michal ^{[2
]}

Gifford, David K. ^{[2
]}

Fink, Gerald R. ^{[1
]}

机构：

[1] MIT, Whitehead Inst Biomed Res, Cambridge, MA 02142 USA

[2] MIT, Comp Sci & Artificial Intelligence Lab, Cambridge, MA 02139 USA

来源：

GENETICS | 2010年 / 185卷 / 02期

基金：

美国国家科学基金会; 美国国家卫生研究院;

关键词：

ASH1; MESSENGER-RNA; SACCHAROMYCES-CEREVISIAE; FILAMENTOUS GROWTH; PSEUDOHYPHAL DIFFERENTIATION; KH DOMAIN; GENE; LOCALIZATION; EXPRESSION; NOVA; TRANSLATION;

D O I：

10.1534/genetics.110.113944

中图分类号：

Q3 [遗传学];

学科分类号：

071007 ; 090102 ;

摘要：

Saccharomyces cerevisiae can divide asymmetrically so that the mother and daughter cells have different fates. We show that the RNA-binding protein Khd1 regulates asymmetric expression of FLO11 to determine daughter cell fate during filamentous growth. Khd1 represses transcription of FLO11 indirectly through its regulation of ASH1 mRNA. Khd1 also represses FLO11 through a post-transcriptional mechanism independent of ASH1. Cross-linking immunoprecipitation (CLIP) coupled with high-throughput sequencing shows that Khd1 directly binds repetitive sequences in FLO11 mRNA. Khd1 inhibits translation through this interaction, establishing feed-forward repression of FLO11. This regulation enables changes in FLO11 expression between mother and daughter cells, which establishes the asymmetry required for the developmental transition between yeast form and filamentous growth.

引用

页码：513 / U175

页数：25

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