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. 2017 Feb 7;17(Suppl 1):12. doi: 10.1186/s12862-016-0865-z

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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. 5 — Correlations between the spacer element and the total promoter strength: The upper (a), middle (b) and lower (c) panels in the figure correspond, respectively, to in-vitro inactive, all promoters and in-vitro active sets. In all three panels the spacer motif strength is correlated with the total promoter strength. The correlation constants and P values are also indicated for each panel. The total promoter strength corresponds to the sum of all the element strengths (the strength of the spacer element is not included in the sum)