Abstract
A 3-kilobase DNA segment characteristic of a transposable element was found within a histone H2B pseudogene in a higher eukaryote, the sea urchin Strongylocentrotus purpuratus. The inserted segment (TU1) is flanked by 8-base pair (bp) direct repeats of the H2B sequence. TU1 has long terminal inverted repeats ∼840 bp long with an outer domain of 15-bp tandem repeats and a non-repeating inner domain, and is a member of a heterogeneous family of transposable elements. TU1 differs from most previously characterized eukaryotic transposable elements with terminal direct repats, but resembles the foldback transposon family in Drosophila.
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Liebermann, D., Hoffman-Liebermann, B., Weinthal, J. et al. An unusual transposon with long terminal inverted repeats in the sea urchin Strongylocentrotus purpuratus. Nature 306, 342–347 (1983). https://doi.org/10.1038/306342a0
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DOI: https://doi.org/10.1038/306342a0
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