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. 2016 Aug 2;44(17):8041–8051. doi: 10.1093/nar/gkw693

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© The Author(s) 2016. Published by Oxford University Press on behalf of Nucleic Acids Research.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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Figure 5. — Position and secondary structure similarities between the tRNA intron and tmRNA pseudoknots. (A) The tRNA intron in the three major kingdoms (Bacteria, Archaea and Eukaryota), adapted from Akio Kanai (22). Introns are framboise and mature tRNA is gray. Intron clipping sites are indicated with black arrows. (B) Secondary structure of tmRNA. The tRNA-like (TLD) and mRNA-like (MLD) domains are indicated, and the pseudoknots are framboise. Note the similar positioning of the tRNA introns in the three domains of life and in the other tmRNA domains.