SUMOylation regulates the localization and activity of Polo-like kinase 1 during cell cycle in the silkworm, Bombyx mori

Zhiqing Li, Qixin Cui, Jian Xu, Daojun Cheng, Xiaoyan Wang, Bingqian Li, Jae Man Lee, Qingyou Xia, Takahiro Kusakabe, Ping Zhao

研究成果: ジャーナルへの寄稿記事

2 引用 (Scopus)

抄録

Polo-like kinase 1 (Plk1) is a crucial cell cycle regulator by its specific localization and activity during cell cycle. It has been shown that the phosphorylation and ubiquitylation of Plk1 are required for its own activation and localization. Here, we report that SUMOylation regulates the activity of Plk1 in the lepidopteran insect of Bombyx mori. In the absence of SUMOylation, it causes the lost localization of Plk1 on centrosomes and kinetochores, as well as an uneven distribution in midzone. We further identify that the putative SUMOylation site of Bombyx Plk1 at lysine 466 is required for its localization on centrosomes, and K466 mutation in Plk1 could influence its interaction with Smt3/Ubc9 complex. These findings are also confirmed by Drosophila Polo and human Plk1, which together reveals a conserved role of Plk1 SUMOylation in mammals. Moreover, conjugation of Smt3 to Plk1 SUMOylation mutant promotes its localization on centrosomes and kinetochores, and rescues functional defects of chromosome alignment in cells depleted of endogenous Plk1. Altogether, the present data indicate that the SUMOylation of Plk1 could participate in proper chromosome alignment and segregation during mitosis, and provides a novel layer for the regulation of Plk1 localization and activity throughout cell cycle.

元の言語英語
記事番号15536
ジャーナルScientific reports
7
発行部数1
DOI
出版物ステータス出版済み - 12 1 2017

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Sumoylation
Bombyx
Cell Cycle
Centrosome
Kinetochores
polo-like kinase 1
Chromosome Segregation
Ubiquitination
Mitosis
Lysine
Drosophila
Insects
Mammals

All Science Journal Classification (ASJC) codes

  • General

これを引用

SUMOylation regulates the localization and activity of Polo-like kinase 1 during cell cycle in the silkworm, Bombyx mori. / Li, Zhiqing; Cui, Qixin; Xu, Jian; Cheng, Daojun; Wang, Xiaoyan; Li, Bingqian; Lee, Jae Man; Xia, Qingyou; Kusakabe, Takahiro; Zhao, Ping.

:: Scientific reports, 巻 7, 番号 1, 15536, 01.12.2017.

研究成果: ジャーナルへの寄稿記事

Li, Zhiqing ; Cui, Qixin ; Xu, Jian ; Cheng, Daojun ; Wang, Xiaoyan ; Li, Bingqian ; Lee, Jae Man ; Xia, Qingyou ; Kusakabe, Takahiro ; Zhao, Ping. / SUMOylation regulates the localization and activity of Polo-like kinase 1 during cell cycle in the silkworm, Bombyx mori. :: Scientific reports. 2017 ; 巻 7, 番号 1.
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abstract = "Polo-like kinase 1 (Plk1) is a crucial cell cycle regulator by its specific localization and activity during cell cycle. It has been shown that the phosphorylation and ubiquitylation of Plk1 are required for its own activation and localization. Here, we report that SUMOylation regulates the activity of Plk1 in the lepidopteran insect of Bombyx mori. In the absence of SUMOylation, it causes the lost localization of Plk1 on centrosomes and kinetochores, as well as an uneven distribution in midzone. We further identify that the putative SUMOylation site of Bombyx Plk1 at lysine 466 is required for its localization on centrosomes, and K466 mutation in Plk1 could influence its interaction with Smt3/Ubc9 complex. These findings are also confirmed by Drosophila Polo and human Plk1, which together reveals a conserved role of Plk1 SUMOylation in mammals. Moreover, conjugation of Smt3 to Plk1 SUMOylation mutant promotes its localization on centrosomes and kinetochores, and rescues functional defects of chromosome alignment in cells depleted of endogenous Plk1. Altogether, the present data indicate that the SUMOylation of Plk1 could participate in proper chromosome alignment and segregation during mitosis, and provides a novel layer for the regulation of Plk1 localization and activity throughout cell cycle.",
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