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  The GLD-2 poly(A) polymerase activates gld-1 mRNA in the Caenorhabditis elegans germ line

Suh, N., Jedamzik, B., Eckmann, C. R., Wickens, M., & Kimble, J. (2006). The GLD-2 poly(A) polymerase activates gld-1 mRNA in the Caenorhabditis elegans germ line. Proceedings of the National Academy of Sciences, USA, 103(41), 15108-15112.

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アイテムのパーマリンク: https://hdl.handle.net/21.11116/0000-0001-10BC-9 版のパーマリンク: https://hdl.handle.net/21.11116/0000-0001-10BD-8
資料種別: 学術論文

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 作成者:
Suh, Nayoung, 著者
Jedamzik, Britta1, 著者           
Eckmann, Christian R1, 著者           
Wickens, Marvin, 著者
Kimble, Judith, 著者
所属:
1Max Planck Institute of Molecular Cell Biology and Genetics, Max Planck Society, ou_2340692              

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 要旨: mRNA regulation is crucial for many aspects of metazoan development and physiology, including regulation of stem cells and synaptic plasticity. In the nematode germ line, RNA regulators control stem cell maintenance, the sperm/oocyte decision, and progression through meiosis. Of particular importance to this work are three GLD (germ-line development) regulatory proteins, each of which promotes entry into the meiotic cell cycle: GLD-1 is a STAR/Quaking translational repressor, GLD-2 is a cytoplasmic poly(A) polymerase, and GLD-3 is a homolog of Bicaudal-C. Here we report that the gld-1 mRNA is a direct target of the GLD-2 poly(A) polymerase: polyadenylation of gld-1 mRNA depends on GLD-2, the abundance of GLD-1 protein is dependent on GLD-2, and the gld-1 mRNA coimmunoprecipitates with both GLD-2 and GLD-3 proteins. We suggest that the GLD-2 poly(A) polymerase enhances entry into the meiotic cell cycle at least in part by activating GLD-1 expression. The importance of this conclusion is twofold. First, the activation of gld-1 mRNA by GLD-2 identifies a positive regulatory step that reinforces the decision to enter the meiotic cell cycle. Second, gld-1 mRNA is initially repressed by FBF (for fem-3 binding factor) to maintain stem cells but then becomes activated by the GLD-2 poly(A) polymerase once stem cells begin to make the transition into the meiotic cell cycle. Therefore, a molecular switch regulates gld-1 mRNA activity to accomplish the transition from mitosis to meiosis.

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 日付: 2006
 出版の状態: 出版
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 識別子(DOI, ISBNなど): eDoc: 311162
その他: 717
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出版物名: Proceedings of the National Academy of Sciences, USA
種別: 学術雑誌
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出版社, 出版地: -
ページ: - 巻号: 103 (41) 通巻号: - 開始・終了ページ: 15108 - 15112 識別子(ISBN, ISSN, DOIなど): -