Casein kinase 1 is required for efficient removal of Rec8 during meiosis I.

Casein kinase 1 is required for efficient removal of Rec8 during meiosis I.
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DOI:
10.4161/cc.9.13.12146
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发表时间:
2010-07-01
期刊:
Cell cycle (Georgetown, Tex.)
影响因子:
--
通讯作者:
Gregan J
Gregan J
中科院分区:
其他
文献类型:
--
作者:
Rumpf C;Cipak L;Dudas A;Benko Z;Pozgajova M;Riedel CG;Ammerer G;Mechtler K;Gregan J

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减数分裂期间染色体的分离取决于 Rec8(粘连蛋白的减数分裂特异性 α-kleisin 亚基)的分离酶切割。我们通过质谱法绘制了 Rec8 磷酸化位点,结果表明,在裂殖酵母中,Rec8 磷酸化是减数分裂过程中染色体正确分离所必需的。我们进一步表明,裂殖酵母酪蛋白激酶 1 (CK1) delta/epsilon 亚型 Hhp1 和 Hhp2 是 Rec8 完全磷酸化和在减数分裂 I 开始时有效去除 Rec8 所必需的。我们的数据与减数分裂 I 期间分离酶介导的 Rec8 裂解需要依赖 Hhp1/Hhp2 的 Rec8 磷酸化的模型一致。
Segregation of chromosomes during meiosis depends on separase cleavage of Rec8, the meiosis-specific alpha-kleisin subunit of cohesin. We mapped Rec8 phosphorylation sites by mass spectrometry and show that, in fission yeast, Rec8 phosphorylation is required for proper chromosome disjunction during meiosis. We further show that the fission yeast casein kinase 1 (CK1) delta/epsilon isoforms Hhp1 and Hhp2 are required for full levels of Rec8 phosphorylation and for efficient removal of Rec8 at the onset of anaphase I. Our data are consistent with the model that Hhp1/Hhp2-dependent phosphorylation of Rec8 is required for separase-mediated cleavage of Rec8 during meiosis I.
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