C. Maisonhaute

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We analyse the expression of the retrotransposon 412 in the soma, testes, and ovaries in populations of Drosophila simulans and D. melanogaster, using RT-PCR and in situ hybridization. We find that expression of 412 is highly variable in the soma, confirming previous findings based on Northern blots. No 412RNA is detected in the ovaries by either in situ(More)
1731 is a Drosophila retrotransposon whose transcripts decrease in Drosophila cells after treatment by the steroid hormone 20-hydroxyecdysone (20-OH). Several constructions have been made where the bacterial chloramphenicol acetyltransferase (CAT) gene is put under the control of either the 5' or the 3' long terminal repeats (LTRs) of 1731. CAT activity(More)
The entire 1731 retrotransposon of Drosophila melanogaster, tagged with the E. coli lac Z gene inserted in its gag sequence, was injected into oocytes and fertilized eggs of the urodele amphibian Pleurodeles waltl. Expression of the reporter gene indicated that the 1731 promoter (its 5'LTR) is active in the embryos and not in the oocytes. It appeared that(More)
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