The human THAP9 gene encodes an active P-element DNA transposase.

The human THAP9 gene encodes an active P-element DNA transposase.
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DOI:
10.1126/science.1231789
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发表时间:
2013-01-25
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Rio DC
Rio DC
中科院分区:
其他
文献类型:
--
作者:
Majumdar S;Singh A;Rio DC

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人类基因组包含约50个来自转座因子或转座子的基因,其中许多基因现在是细胞基因表达程序的组成部分。人类THAP9基因与果蝇p元素转座酶有关。在这里,我们发现人类THAP9可以调动果蝇和人类细胞中的果蝇p -元件。果蝇P元件转座酶n端THAP DNA结合域与人类THAP9 c端区域之间形成的嵌合蛋白也可以调动果蝇P元件。我们的研究结果表明,人类THAP9是一种活跃的DNA转座酶,尽管被“驯化”,但仍然保留了跨物种动员P转座因子的催化活性。
The human genome contains ~50 genes that were derived from transposable elements or transposons, and many are now integral components of cellular gene expression programs. The human THAP9 gene is related to the Drosophila P-element transposase. Here, we show that human THAP9 can mobilize Drosophila P-elements in both Drosophila and human cells. Chimeric proteins formed between the Drosophila P-element transposase N-terminal THAP DNA binding domain and the C-terminal regions of human THAP9 can also mobilize Drosophila P elements. Our results indicate that human THAP9 is an active DNA transposase that, although “domesticated,” still retains the catalytic activity to mobilize P transposable elements across species.
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