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. 2015 Sep 16;14:139. doi: 10.1186/s12934-015-0327-0

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© Tang et al. 2015

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 — GSH production of single-pathway, two-pathway and three-pathway engineered strains. a GSH concentration (mg/L). b Biomass (DCW). c GSH content (%). G (F, P or P′) represents improvement of GSH amount conferred by the overexpression of G (F, P or P′) pathway and H represents GSH amount of host strain W303-1b. DCW is calculated from OD₆₀₀ values (OD₆₀₀ = 10 corresponds to 1.19 g/L DCW). The values are presented as the means, and the error bars show the SD (n = 3)