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. 2008 Jul 1;24(13):i24–i31. doi: 10.1093/bioinformatics/btn172

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© 2008 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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Fig. 4. — Result of SOM clustering on a 6 × 6 grid. The profile in each graph is the average of all sequences that map to that cluster. The sequences are converted using the base-stacking energy. The X-axis shows the position relative to the putative TSS. The two left-most clusters in the top row and the left-most cluster in the second row are promoter-rich and show the typical core promoter profile. The promoter-rich clusters are displayed with a white background, the others with a gray one. The legend shows the total number, the number of promoter (+) and the number of other (−) sequences.