Reference: Kiechle M, et al. (2000) DNA integration by Ty integrase in yku70 mutant Saccharomyces cerevisiae cells. Mol Cell Biol 20(23):8836-44

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Abstract


In the present work we examined nonhomologous integration of plasmid DNA in a yku70 mutant. Ten of 14 plasmids integrated as composite elements, including Ty sequences probably originating from erroneous strand-switching and/or priming events. Three additional plasmids integrated via Ty integrase without cointegrating Ty sequences, as inferred from 5-bp target site duplication and integration site preferences. Ty integrase-mediated integration of non-Ty DNA has never been observed in wild-type cells, although purified integrase is capable of using non-Ty DNA as a substrate in vitro. Hence our data implicate yKu70 as the cellular function preventing integrase from accepting non-Ty DNA as a substrate.

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Journal Article | Research Support, Non-U.S. Gov't | Research Support, U.S. Gov't, P.H.S.
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Kiechle M, Friedl AA, Manivasakam P, Eckardt-Schupp F, Schiestl RH
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