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. 2006 Sep 25;34(18):5184–5193. doi: 10.1093/nar/gkl664

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© 2006 The Author(s)

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.0/uk/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Putative secondary structures of conserved 3′ tails. (A) UnaL2, UnaSINE1 and UnaSINE2. (B) Zebrafish LINEs and a SINE, which belong to the L2 clade. All members of the L2 clade have a conserved 3′ tail containing a stem–loop (the loop regions are not shown). Watson–Crick base pairs are indicated by horizontal lines. Non-Watson-Crick base pairs are indicated by dots. Nucleotides that differ from those of UnaL2 are indicated in red. Sequences of the zebrafish elements were obtained from Repbase (47).