Fundamental cell cycle kinases collaborate to ensure timely destruction of the synaptonemal complex during meiosis

Bilge Argunhan, Wing‐Kit Leung, Negar Afshar, Yaroslav Terentyev, Vijayalakshmi V Subramanian, Yasuto Murayama, Andreas Hochwagen, Hiroshi Iwasaki, Tomomi Tsubouchi, Hideo Tsubouchi

doi:10.1080/15384101.2017.1411435

The synaptonemal complex (SC) is a proteinaceous macromolecular assembly that forms during meiotic prophase I and mediates adhesion of paired homologous chromosomes along their entire lengths. Although prompt disassembly of the SC during exit from prophase I is a landmark event of meiosis, the underlying mechanism regulating SC destruction has remained elusive. Here, we show that DDK (Dbf4‐dependent Cdc7 kinase) is central to SC destruction. Upon exit from prophase I, Dbf4, the regulatory subunit of DDK, directly associates with and is phosphorylated by the Polo‐like kinase Cdc5. In parallel, upregulated CDK1 activity also targets Dbf4. An enhanced Dbf4‐Cdc5 interaction pronounced phosphorylation of Dbf4 and accelerated SC destruction, while reduced/abolished Dbf4 phosphorylation hampered destruction of SC proteins. SC destruction relieved meiotic inhibition of the ubiquitous recombinase Rad51, suggesting that the mitotic recombination machinery is reactivated following prophase I exit to repair any persisting meiotic DNA double‐strand breaks. Taken together, we propose that the concerted action of DDK, Polo‐like kinase, and CDK1 promotes efficient SC destruction at the end of prophase I to ensure faithful inheritance of the genome.

Fundamental cell cycle kinases collaborate to ensure timely destruction of the synaptonemal complex during meiosis

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収録刊行物

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Fundamental cell cycle kinases collaborate to ensure timely destruction of the synaptonemal complex during meiosis

説明

収録刊行物

被引用文献 (6)*注記

参考文献 (92)*注記

関連プロジェクト

キーワード

詳細情報 詳細情報について

書き出し

問題の指摘

詳細情報詳細情報について