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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Genetic and molecular analysis of the gypsy chromatin insulator of Drosophila
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Genetic and molecular analysis of the gypsy chromatin insulator of Drosophila

机译:果蝇吉普赛染色质绝缘子的遗传和分子分析

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摘要

Boundary or insulator elements set up inde- pendent territories of gene activity by establishing higher order domains of chromatin structure. The gypsy retrotrans- poson of Drosophila contains an insulator element that re- presses enhancer-promoter interactions and is responsible for the mutant phenotypes caused by insertion of this element. The gypsy insulator inhibits the interaction of promoter-distal enhancers with the transcription complex without affecting the functionality of promoter-proximal enhancers; in addi- tion, these sequences can buffer a transgene from chromo- somal position effects.
机译:边界或绝缘子元件通过建立染色质结构的更高阶域来建立基因活性的独立区域。果蝇的吉普赛逆转录转座子包含一个绝缘子元件,该元件可抑制增强子-启动子的相互作用,并负责插入该元件而引起的突变表型。吉普赛绝缘子抑制启动子-远端增强子与转录复合物的相互作用,而不会影响启动子-近端增强子的功能。另外,这些序列可以缓冲染色体位置效应引起的转基因。

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