Phosphorylation of SKAP by GSK3β ensures chromosome segregation by a temporal inhibition of Kif2b activity.
Phosphorylation of SKAP by GSK3β ensures chromosome segregation by a temporal inhibition of Kif2b activity.
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GSK3 beta 磷酸化 SKAP 通过暂时抑制 Kif2b 活性确保染色体分离
DOI:
10.1038/srep38791
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发表时间:
2016-12-16
影响因子:
4.6
通讯作者:
Yao X
中科院分区:
文献类型:
--
作者:
Qin B;Cao D;Wu H;Mo F;Shao H;Chu J;Powell M;Aikhionbare F;Wang D;Fu C;He P;Pan W;Wang W;Liu X;Yao X
Chromosome segregation in mitosis is orchestrated by the dynamic interactions between the kinetochore and spindle microtubules. Our recent study shows SKAP is an EB1-dependent, microtubule plus-end tracking protein essential for kinetochore oscillations during mitosis. Here we show that phosphorylation of SKAP by GSK3β regulates Kif2b depolymerase activity by competing Kif2b for microtubule plus-end binding. SKAP is a bona fide substrate of GSK3β in vitro and the phosphorylation is essential for an accurate kinetochore-microtubule attachment in cells. The GSK3β-elicited phosphorylation sites were mapped by mass spectrometry and the phosphomimetic mutant of SKAP can rescue the phenotype of chromosome missegregation in SKAP-suppressed cells. Importantly, GSK3β-elicited phosphorylation promotes SKAP binding to Kif2b to regulate its depolymerase activity at the microtubule plus-ends. Based on those findings, we reason that GSK3β-SKAP-Kif2b signaling axis constitutes a dynamic link between spindle microtubule plus-ends and mitotic chromosomes to achieve faithful cell division.
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影响因子:
16.8
作者:
通讯作者:
--
影响因子:
21.3
作者:
Bakhoum, Samuel F.;Thompson, Sarah L.;Manning, Amity L.;Compton, Duane A.
通讯作者:
Compton, Duane A.
影响因子:
21.3
作者:
Fukata, Y;Itoh, TJ;Kaibuchi, K
通讯作者:
Kaibuchi, K
DOI:
10.1083/jcb.200404012
发表时间:
2004-08-16
期刊:
The Journal of cell biology
影响因子:
--
作者:
Ganem NJ;Compton DA
通讯作者:
Compton DA
影响因子:
9.2
作者:
Ems-McClung, Stephanie C.;Hainline, Sarah G.;Devare, Jenna;Zong, Hailing;Cai, Shang;Carnes, Stephanie K.;Shaw, Sidney L.;Walczak, Claire E.
通讯作者:
Walczak, Claire E.