Abstract:Mechanistic regulation of DNA transposon systems in mammalian cells remains poorly understood. Using modeling, biochemical, and cell-based assays, we sought to extend the recent cryoEM structural insight into the piggyBac transpososome to evaluate the previously unexplained role of the transposase N-terminus, the need for asymmetric transposon ends, and the complexity of transposase tetramer formation for transposition in mammalian cells. We found that N-terminal phosphorylation by casein kinase II inhibits … Show more
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