The 14-3-3 protein PAR-5 regulates the asymmetric localization of the LET-99 spindle positioning protein.
The 14-3-3 protein PAR-5 regulates the asymmetric localization of the LET-99 spindle positioning protein.
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14-3-3 蛋白 PAR-5 调节 LET-99 纺锤体定位蛋白的不对称定位。
DOI:
10.1016/j.ydbio.2016.02.020
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发表时间:
2016
影响因子:
2.7
通讯作者:
Rose,LesileeS
中科院分区:
文献类型:
--
作者:
Wu,Jui-Ching;Espiritu,EugenelB;Rose,LesileeS
PAR proteins play important roles in establishing cytoplasmic polarity as well as regulating spindle positioning during asymmetric division. However, the molecular mechanisms by which the PAR proteins generate asymmetry in different cell types are still being elucidated. Previous studies inCaenorhabditis elegansrevealed that PAR-3 and PAR-1 regulate the asymmetric localization of LET-99, which in turn controls spindle positioning by affecting the distribution of the conserved force generating complex. In wild-type embryos, LET-99 is localized in a lateral cortical band pattern, via inhibition at the anterior by PAR-3 and at the posterior by PAR-1. In this report, we show that the 14-3-3 protein PAR-5 is also required for cortical LET-99 asymmetry. PAR-5 associated with LET-99 in pull-down assays, and two PAR-5 binding sites were identified in LET-99 using the yeast two-hybrid assay. Mutation of these sites abolished binding in yeast and altered LET-99 localization in vivo: LET-99 was present at the highest levels at the posterior pole of the embryo instead of a band inpar-5embryos. Together the results indicate that PAR-5 acts in a mechanism with PAR-1 to regulate LET-99 cortical localization.
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影响因子:
3.3
作者:
Jui-Ching Wu;Lesilee S. Rose
通讯作者:
Jui-Ching Wu;Lesilee S. Rose
影响因子:
4
作者:
Aristizabal-Corrales, David;Fontrodona, Laura;Schwartz, Simo, Jr.
通讯作者:
Schwartz, Simo, Jr.
影响因子:
7.3
作者:
Freeman, Alyson K.;Morrison, Deborah K.
通讯作者:
Morrison, Deborah K.
影响因子:
2.7
作者:
Park, Dae Hwi;Rose, Lesilee S.
通讯作者:
Rose, Lesilee S.
影响因子:
4.6
作者:
V. Riechmann;A. Ephrussi
通讯作者:
A. Ephrussi