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Cell end-localized Dma1 is involved in ubiquitination of phosphorylated Tip1/CLIP-170 and its involvement in polar growth in fission yeast

Abstract

细胞极性是大多数细胞的一个基本特征,细胞极性的建立是细胞周期中的重要事件。裂殖酵母Schizosaccharomycespombe中的Tip1是微管正极末端示踪蛋白复合物(plus-endtrackingproteins,+TIPs)的组分之一,也是CLIP-170蛋白家族的成员,在运输极性因子到达细胞端部的过程中起着重要作用。裂殖酵母中的Dma1是人类细胞肿瘤抑制因子Chfr以及RING8的同源蛋白,具有E3泛素连接酶的活性,目前认为它是纺锤体检验点蛋白和胞质分裂的抑制因子。 为了更好地了解裂殖酵母细胞中Dma1的功能,我们实验室的前期研究利用串联亲和纯化(TAPpurification)...Cell polarization is a major event of the cell cycle and underlies the function of most cells. In the fission yeast Schizosaccharomyces pombe, the microtubule plus end-tracking protein Tip1, a CLIP-170 protein family member, plays an important role in delivering cell polarity factors to cell tips. Fission yeast Dma1 is an E3 ubiquitin ligase and a homologue of the human tumor suppressors Chfr and ...学位:理学硕士院系专业:生命科学学院_生物化学与分子生物学学号:2162012115234

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