Independence of excision frequency and transposition frequency of P element in Drosophila melanogaster

Jpn J Genet. 1991 Oct;66(5):535-50. doi: 10.1266/jjg.66.535.

Abstract

Although a family of transposon, P elements, are used as tools for molecular genetics in Drosophila melanogaster, the molecular details and mechanism of their mobilization process have not been studied extensively. In particular, the relationship between excision and transposition is little understood. We have previously produced a transgenic fly with a P element insertion that is nonautonomous (stable without transposase) and is highly-transposable in the presence of transposase. Using this insertion, we traced its mobilizations following introduction of a stable transposase source. We found a strain that has a 26-bp tandem repeat at the end of the original P element insertion. The 26-bp repeat reduced the frequency of excision although the frequency of transposition was not altered. Our results indicate independence of transposition from excision and importance of terminal repeat in excision.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Base Sequence
  • Blotting, Southern
  • Cloning, Molecular
  • Crosses, Genetic
  • DNA
  • DNA Transposable Elements*
  • Drosophila melanogaster / genetics*
  • Female
  • Male
  • Molecular Sequence Data
  • Repetitive Sequences, Nucleic Acid
  • Restriction Mapping

Substances

  • DNA Transposable Elements
  • DNA

Associated data

  • GENBANK/D01061
  • GENBANK/D01062
  • GENBANK/D01063
  • GENBANK/D01064
  • GENBANK/S80256
  • GENBANK/S80260
  • GENBANK/S80261
  • GENBANK/S80263
  • GENBANK/S80266
  • GENBANK/S80268
  • GENBANK/S81878
  • GENBANK/S81879
  • GENBANK/S81880
  • GENBANK/S81883