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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Recognition of diverse sequences by class I zinc fingers: Asymmetries and indirect effects on specificity in the interaction between CF2II and A+T-rich sequence elements
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Recognition of diverse sequences by class I zinc fingers: Asymmetries and indirect effects on specificity in the interaction between CF2II and A+T-rich sequence elements

机译:通过I类锌指识别各种序列:CF2II与富含A + T的序列元素之间相互作用的不对称性和对特异性的间接影响

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摘要

The Drosophila CF2II protein, which con- tains zinc fingers of the Cys_2His_2 type and recognizes an A+T-rich sequence, behaves in cell culture as an activator of a reporter chloramphenicol acetyltransferase gene. This ac- tivity depends on C-terminal but not N-terminal zinc fingers, as does in vitro DNA binding. By site-specific mutagenesis and binding site selection, we define the critical amino acid-base interactions.
机译:果蝇CF2II蛋白包含Cys_2His_2类型的锌指并识别富含A + T的序列,在细胞培养中表现为报告氯霉素乙酰转移酶基因的激活剂。这种活性取决于C末端而不是N末端的锌指,体外DNA结合也是如此。通过位点特异性诱变和结合位点选择,我们定义了关键的氨基酸-碱基相互作用。

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