| RRC ID |
56985
|
| 著者 |
Li Z, Cui Q, Xu J, Cheng D, Wang X, Li B, Lee JM, Xia Q, Kusakabe T, Zhao P.
|
| タイトル |
SUMOylation regulates the localization and activity of Polo-like kinase 1 during cell cycle in the silkworm, Bombyx mori.
|
| ジャーナル |
Sci Rep
|
| 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.
|
| 巻・号 |
7(1)
|
| ページ |
15536
|
| 公開日 |
2017-11-14
|
| DOI |
10.1038/s41598-017-15884-7
|
| PII |
10.1038/s41598-017-15884-7
|
| PMID |
29138491
|
| PMC |
PMC5686133
|
| MeSH |
Animals
Bombyx / cytology*
Bombyx / enzymology*
Bombyx / genetics
Cell Cycle*
Cell Cycle Proteins / genetics
Cell Cycle Proteins / metabolism*
Centrosome / enzymology
Chromosome Segregation
Drosophila / metabolism
Insect Proteins / metabolism*
Kinetochores / enzymology
Mitosis
Mutation
Protein Serine-Threonine Kinases / genetics
Protein Serine-Threonine Kinases / metabolism*
Proto-Oncogene Proteins / genetics
Proto-Oncogene Proteins / metabolism*
Small Ubiquitin-Related Modifier Proteins / metabolism
Sumoylation*
Ubiquitin-Conjugating Enzymes / metabolism
|
| IF |
4.011
|
| 引用数 |
2
|
| リソース情報 |
| カイコ |
BmN4 cell |
