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. 2010 Nov 19;39(Database issue):D129–D135. doi: 10.1093/nar/gkq971

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© The Author(s) 2010. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.5), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 1. — Terminators catalogued in the WebGeSTer DB—(i) L-shaped (canonical terminators): hairpin + 10 bp trail having >3 uridylates, (ii) I-shaped: hairpin + ≤3 uridines in the trail, (iii) U-shaped: >1 hairpin in tandem with an interval of <50 nt in between, (iv) V-shaped: two hairpins’ structure, where the second structure starts immediately at the end of first one and (v) X-shaped: convergent type structures that function as terminators for the convergently transcribed genes on two different strands.