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MBE Advance Access originally published online on February 4, 2003
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Mol. Biol. Evol. 20(2):163-167. 2003
DOI: 10.1093/molbev/msg023
© 2003 by the Society for Molecular Biology and Evolution. ISSN: 0737-4038

Vege and Mar: Two Novel hAT MITE Families from Drosophila willistoni

Andrew J. Holyoake and Margaret G. Kidwell

Department of Ecology and Evolutionary Biology, The University of Arizona, Tucson, Arizona

Two novel families of miniature inverted repeat transposable elements (MITEs), Vege and Mar, are described from Drosophila willistoni. Based on their structures, both element families are hypothesized to belong to the hAT superfamily of transposable elements. Both elements have perfect, inverted terminal repeats and 8-bp target site duplications and were found to have inserted within fixed copies of nonautonomous P elements. Vege is present in all studied D. willistoni populations and appears to have a relatively low copy number. Mar was identified in only a single D. willistoni population, and its copy number is presently unknown. Although MITEs occupy relatively large proportions of the genomes of a broad range of organisms, this may be their first unambiguous identification in any species of the genus Drosophila.

Key Words: Drosophila willistoni • transposons • MITEs • hAT elements


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