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MBE Advance Access published online on February 4, 2003
Molecular Biology and Evolution, doi:10.1093/molbev/msg023
Molecular Biology and Evolution © Society for Molecular Biology and Evolution 2003; all rights reserved
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Accepted September 13, 2002
© 2003 Society for Molecular Biology and Evolution

Original Articles

Vege and Mar: Two novel hAT MITE families from Drosophila willistoni

Andrew J. Holyoake 1 Margaret G. Kidwell 1*

1 Department of Ecology and Evolutionary Biology, The University of Arizona, Tucson AZ 85721, USA

* To whom correspondence should be addressed. E-mail: kidwell{at}azstarnet.com.


  Abstract

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, 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: Keywords: Drosophila willistoni, transposons, MITEs, hAT elements


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