, Volume 98, Issue 1, pp 33–41

Excision of the piggyBac transposable element in vitro is a precise event that is enhanced by the expression of its encoded transposase


  • Teresa A. Elick
    • Department of Biological SciencesUniversity of Notre Dame
  • Christopher A. Bauser
    • Department of Biological SciencesUniversity of Notre Dame
  • M. J. Fraser
    • Department of Biological SciencesUniversity of Notre Dame

DOI: 10.1007/BF00120216

Cite this article as:
Elick, T.A., Bauser, C.A. & Fraser, M.J. Genetica (1996) 98: 33. doi:10.1007/BF00120216


The piggyBac Lepidopteran transposable element moves from the cellular genome into infecting baculovirus genomes during passage of the virus in cultured TN-368 cells. We have constructed genetically tagged piggyBac elements that permit analysis of excision when transiently introduced on plasmids into the piggyBac-deficient Spodoptera frugiperda IPLB-SF21AE cell line. Precise excision of the element from these plasmids occurs at a higher frequency in the presence of a helper plasmid that presumably supplies the piggyBac transposase. The results suggest that the piggyBac transposon encodes a protein that functions to facilitate not only insertion, but precise excision as well. This is the first demonstration of piggyBac mobility from plasmid sources in uninfected Lepidopteran cells.

Key words

piggyBacLepidopterantransposable element

Copyright information

© Kluwer Academic Publishers 1996