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首页> 外文期刊>Biochemical Genetics >Genetic Selection for Modulators of the MAP Kinase and β-Catenin Growth-Control Pathways in Mammalian Cells
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Genetic Selection for Modulators of the MAP Kinase and β-Catenin Growth-Control Pathways in Mammalian Cells

机译:哺乳动物细胞中MAP激酶和β-Catenin生长控制途径调节剂的遗传选择。

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摘要

Transdominant genetic selections can yield protein fragment and peptide modulators of specific biochemical pathways. In yeast, such screens have been highly successful in targeting the MAP (mitogen-activated protein) kinase growth-control pathway. We performed a similar type of selection aimed at recovery of modulators of the mammalian MAP kinase cascade. Two pathway activators were identified, fragments of the TrkB and Raf-1 kinases. In a second selection directed at the β-catenin growth-control pathway, three different clones encoding cadherin fragments were recovered. In neither selection were peptide inhibitors observed. We conclude that some transdominant selections in mammalian cells can readily yield high-penetrance protein fragments, but may be less amenable to isolation of peptide inhibitors.
机译:遗传选择可以产生特定生化途径的蛋白质片段和肽调节剂。在酵母中,此类筛选在靶向MAP(促分裂原活化蛋白)激酶的生长控制途径方面非常成功。我们进行了旨在恢复哺乳动物MAP激酶级联调节剂的类似选择。确定了两个途径激活剂,TrkB和Raf-1激酶的片段。在针对β-catenin生长控制途径的第二次选择中,回收了编码钙粘蛋白片段的三个不同克隆。在两种选择中均未观察到肽抑制剂。我们得出的结论是,哺乳动物细胞中的一些优势选择可以很容易地产生高渗透性的蛋白片段,但是可能不适合分离肽抑制剂。

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