Site-specific phosphorylation of ZYG-1 regulates ZYG-1 stability and centrosome number.
Site-specific phosphorylation of ZYG-1 regulates ZYG-1 stability and centrosome number.
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DOI:
10.1016/j.isci.2023.108410
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发表时间:
2023-12-15
期刊:
影响因子:
5.8
通讯作者:
Song, Mi Hye
中科院分区:
文献类型:
--
作者:
Medley, Jeffrey C.;Yim, Rachel N.;DiPanni, Joseph;Sebou, Brandon;Shaffou, Blake;Cramer, Evan;Wu, Colin;Kabara, Megan;Song, Mi Hye
Spindle bipolarity is critical for genomic integrity. As centrosome number often dictates bipolarity, tight control of centrosome assembly is vital for faithful cell division. The master centrosome regulator ZYG-1/Plk4 plays a pivotal role in this process. In C. elegans, casein kinase II (CK2) negatively regulates centrosome duplication by controlling centrosome-associated ZYG-1 levels. Here, we investigated CK2 as a regulator of ZYG-1 and its impact on centrosome assembly. We show that CK2 phosphorylates ZYG-1 in vitro and physically interacts with ZYG-1 in vivo. Depleting CK2 or blocking ZYG-1 phosphorylation at CK2 target sites leads to centrosome amplification. Non-phosphorylatable ZYG-1 mutants exhibit elevated ZYG-1 levels, leading to increased ZYG-1 and downstream factors at centrosomes, thus driving centrosome amplification. Moreover, inhibiting the 26S proteasome prevents degradation of the phospho-mimetic ZYG-1. Our findings suggest that CK2-dependent phosphorylation of ZYG-1 controls ZYG-1 levels via proteasomal degradation to limit centrosome number. Depleting casein kinase II (CK2) leads to extra centrosomes CK2 directly phosphorylates ZYG-1 ZYG-1 phosphorylation by CK2 triggers proteasomal degradation of ZYG-1 CK2-dependent phosphorylation of ZYG-1 regulates centrosome number Biological sciences; Cell; Cell biology; Molecular biology; Genetics
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影响因子:
11.8
作者:
Song, Mi Hye;Aravind, L.;Mueller-Reichert, Thomas;O'Connell, Kevin F.
通讯作者:
O'Connell, Kevin F.
影响因子:
3.3
作者:
Hu, JH;Bae, YK;Barr, MM
通讯作者:
Barr, MM
影响因子:
4
作者:
Guderian, Gernot;Westendorf, Jens;Nigg, Erich A.
通讯作者:
Nigg, Erich A.
影响因子:
21.3
作者:
Habedanck, R;Stierhof, YD;Nigg, EA
通讯作者:
Nigg, EA
DOI:
10.1073/pnas.1509499112
发表时间:
2015-12-29
影响因子:
11.1
作者:
Alessi, Amelia F.;Khivansara, Vishal;Kim, John K.
通讯作者:
Kim, John K.