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. 1985 Jan 25;13(2):485–500. doi: 10.1093/nar/13.2.485

Distinct characteristics of loop sequences of two Drosophila foldback transposable elements.

H L Brierley, S S Potter
PMCID: PMC341010  PMID: 2987798

Abstract

A few foldback (FB) transposable elements have, between their long terminal inverted repeats, central loop sequences which have been shown to be different from FB inverted repeat sequences. We have investigated loop sequences from two such FB elements by analyzing their genomic distribution and sequence conservation and, in particular, by determining if they are normally associated with FB elements. One of these FB loop sequences seems to be present in a few conserved copies found adjacent to FB inverted repeat sequences, suggesting that it represents an integral component of some FB elements. The other loop sequence is less well-conserved and not usually associated with FB inverted repeats. This sequence is a member of another family of transposable elements, the HB family, and was found inserted in an FB element only by chance. We compare the complete DNA sequences of two HB elements and examine the ends of four HB elements.

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Selected References

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