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    • 3. 发明授权
    • Mammalian endonucleases and methods of use
    • 哺乳动物内切核酸酶和使用方法
    • US07396669B2
    • 2008-07-08
    • US10880881
    • 2004-06-30
    • Michael N. BoddyVeronique BlaisXiao-Bo ChenClare H. McGowanPierre-Henri L. GaillardPaul R. Russell
    • Michael N. BoddyVeronique BlaisXiao-Bo ChenClare H. McGowanPierre-Henri L. GaillardPaul R. Russell
    • C12N9/16C07K14/00C12Q1/44C12P21/06C12N15/00C12N5/10C12N1/21C07H21/04
    • C12N9/22
    • Isolated mammalian Mus81-Eme endonuclease complexes comprise an Mus81 protein portion and an Eme protein portion. A method of identifying a chemical compound that modulates mammalian cellular response to DNA damage comprises contacting a chemical compound to be tested with a biochemical mixture containing an isolated mammalian Mus81-Eme1 endonuclease complex, a source of magnesium ion, and a suitable DNA substrate; measuring the activity level of mammalian Mus81-Eme endonuclease complex in the mixture; comparing the measured activity level to the activity level of a substantially similar mixture of isolated Mus81-Eme1 endonuclease, magnesium ion, and DNA substrate in the absence of the chemical compound to be tested; and selecting a chemical compound that increases or decreases the endonuclease activity. Isolated mammalian Eme1 and Eme2 proteins derived from humans and murine species and isolated nucleic acids encoding the proteins are also described.
    • 分离的哺乳动物Mus81-Eme内切核酸酶复合物包含Mus81蛋白质部分和Eme蛋白质部分。 鉴定调节哺乳动物细胞对DNA损伤的反应的化合物的方法包括将待测试的化合物与含有分离的哺乳动物Mus81-Eme1内切核酸酶复合物,镁离子源和合适的DNA底物的生化混合物接触; 测量混合物中哺乳动物Mus81-Eme核酸内切酶复合物的活性水平; 将测量的活性水平与不存在待测化学化合物的分离的Mus81-Eme1内切核酸酶,镁离子和DNA底物的基本相似的混合物的活性水平进行比较; 并选择增加或减少核酸内切酶活性的化合物。 还描述了衍生自人和鼠类物种的分离的哺乳动物Eme1和Eme2蛋白以及编码蛋白质的分离的核酸。