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. 2010 Sep 4;26(18):i426–i432. doi: 10.1093/bioinformatics/btq363

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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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Fig. 1. — Typical position and length-dependent pattern matrices for (a) a tRNA (Gly/GCC), (b) a miRNA (mir-423) and (c) a snRNA (U2). Frequencies of reads starting at position (x-axis) and of length (y-axis) are visualized in different shades of gray. Note that both the snRNA and the tRNA could easily be mistaken for a miRNA, if only the most abundant read is considered. Graphical respresentations for all pattern matrices are available on the project web site.