Evolutionary dynamics of the LTR retrotransposons roo and rooA inferred from twelve complete Drosophila genomes.

ABSTRACT:

Background

Roo is the most abundant retrotransposon in the fruit fly Drosophila melanogaster. Its evolutionary origins and dynamics are thus of special interest for understanding the evolutionary history of Drosophila genome organization. We here study the phylogenetic distribution and evolution of roo, and its highly diverged relative rooA in 12 completely sequenced genomes of the genus Drosophila.

Results

We identify a total of 164 roo copies, 57 of which were previously unidentified copies that occur in 9 of the 12 genomes. Additionally we find 66 rooA copies in four genomes and remnants of this element in two additional genomes. We further increased the number of elements by searching for individual roo/rooA sequence domains. Most of our roo and rooA elements have been r

SUBMITTER: de la Chaux N 

PROVIDER: S-EPMC3087523 | biostudies-literature | 2009 Aug

REPOSITORIES: biostudies-literature