The present invention relates to a method of modifying a target sequence in the genome of a eukaryotic cell, the method comprising the step: (a) introducing into the cell a fusion protein comprising a DNA-binding domain of a Tal effector protein and a non-specific cleavage domain of a restriction nuclease or a nucleic acid molecule encoding the fusion protein in expressible form, wherein the fusion protein specifically binds within the target sequence and introduces a double strand break within the target sequence. The present invention further relates to the method of the invention, wherein the modification of the target sequence is by homologous recombination with a donor nucleic acid sequence further comprising the step: (b) introducing a nucleic acid molecule into the cell, wherein the nucleic acid molecule comprises the donor nucleic acid sequence and regions homologous to the target sequence. The present invention also relates to a method of producing a non-human mammal or vertebrate carrying a modified target sequence in its genome. Furthermore, the present invention relates to a fusion protein comprising a DNA-binding domain of a Tal effector protein and a non-specific cleavage domain of a restriction nuclease.
本发明涉及一种修饰真核细胞
基因组中靶序列的方法,该方法包括以下步骤:(a)向细胞中导入融合蛋白,该融合蛋白包括Tal效应蛋白的DNA结合结构域和限制性
核酸酶的非特异性裂解结构域或编码该融合蛋白的可表达形式的核酸分子,其中该融合蛋白特异性地结合在靶序列中并在靶序列中引入双链断裂。本发明进一步涉及本发明的方法,其中靶序列的修饰是通过与供体核酸序列的同源
重组进行的,进一步包括以下步骤:(b) 将核酸分子导入细胞,其中核酸分子包括供体核酸序列和与靶序列同源的区域。本发明还涉及一种生产非人类哺乳动物或脊椎动物的方法,这种哺乳动物或脊椎动物的
基因组中携带经过修饰的靶序列。此外,本发明还涉及一种融合蛋白,它包括 Tal 效应蛋白的 DNA 结合结构域和限制性核酸内切酶的非特异性裂解结构域。