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An unusual transposon with long terminal inverted repeats in the sea urchin Strongylocentrotus purpuratus

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An unusual transposon with long terminal inverted repeats in the sea urchin Strongylocentrotus purpuratus

LIEBERMANN, Dan, et al.

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.

LIEBERMANN, Dan, et al . An unusual transposon with long terminal inverted repeats in the sea urchin Strongylocentrotus purpuratus. Nature , 1983, vol. 306, no. 5941, p. 342-347

DOI : 10.1038/306342a0

Available at:

http://archive-ouverte.unige.ch/unige:85380

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