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Kermit Interacts with Gαo Vang and Motor Proteins in Drosophila Planar Cell Polarity

机译:柯密特与果蝇平面细胞极性中的GαoVang和运动蛋白相互作用。

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摘要

In addition to the ubiquitous apical-basal polarity, epithelial cells are often polarized within the plane of the tissue – the phenomenon known as planar cell polarity (PCP). In Drosophila, manifestations of PCP are visible in the eye, wing, and cuticle. Several components of the PCP signaling have been characterized in flies and vertebrates, including the heterotrimeric Go protein. However, Go signaling partners in PCP remain largely unknown. Using a genetic screen we uncover Kermit, previously implicated in G protein and PCP signaling, as a novel binding partner of Go. Through pull-down and genetic interaction studies, we find that Kermit interacts with Go and another PCP component Vang, known to undergo intracellular relocalization during PCP establishment. We further demonstrate that the activity of Kermit in PCP differentially relies on the motor proteins: the microtubule-based dynein and kinesin motors and the actin-based myosin VI. Our results place Kermit as a potential transducer of Go, linking Vang with motor proteins for its delivery to dedicated cellular compartments during PCP establishment.
机译:除了普遍存在的顶基极极性外,上皮细胞还经常在组织平面内极化-这种现象称为平面细胞极性(PCP)。在果蝇中,PCP的表现在眼,翼和角质层中可见。 PCP信号传导的几个组成部分已在果蝇和脊椎动物中得到鉴定,包括异三聚体Go蛋白。但是,PCP中的Go信号合作伙伴仍然未知。使用遗传筛选,我们发现以前与G蛋白和PCP信号传导有关的Kermit是Go的新型结合伴侣。通过下拉和遗传相互作用研究,我们发现柯密特与Go和另一个PCP成分Vang相互作用,该成分在PCP建立过程中会发生细胞内重新定位。我们进一步证明,Kermit在PCP中的活性差异依赖于运动蛋白:基于微管的动力蛋白和驱动蛋白以及基于肌动蛋白的肌球蛋白VI。我们的研究结果使Kermit成为Go的潜在转导者,将Vang与运动蛋白连接起来,以便在PCP建立过程中将其传递到专用的细胞室。

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  • 期刊名称 other
  • 作者

    Chen Lin; Vladimir L. Katanaev;

  • 作者单位
  • 年(卷),期 -1(8),10
  • 年度 -1
  • 页码 e76885
  • 总页数 9
  • 原文格式 PDF
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