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. 2017 Oct 31;18:207. doi: 10.1186/s13059-017-1333-9

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© The Author(s). 2017

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 4 — Plastic and constrained H3K27me3 marking among families of gene orthologs encoding transcription factors. a For each of the 20 largest gene families encoding transcription factors (TFs), the percentage of gene orthologs either not marked by H3K27me3 or else showing plastic or constrained H3K27me3 marking. b Phylogenetic trees showing the distribution of plastic or constrained H3K27me3 marking for the C3H and WRKY TF gene families. Color code is as in a. c Promoter sequence similarity (Ath-Aal comparisons, top panel) and tissue specificity of expression, as estimated by Shannon entropy for the 20 largest TF gene families (bottom panel)