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. 2017 Apr 19;16:64. doi: 10.1186/s12934-017-0678-9

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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 — Expression patterns of enzymes catalyzing the conversion of pyruvate to acetyl-CoA under Fe+ and Fe− conditions at exponential growth phase (early) and stationary phase (late). PFOR 1 (F502_07648, pyruvate: ferredoxin oxidoreductase) and PFOR 2 [F502_07643, pyruvate:ferredoxin (flavodoxin) oxidoreductase] are up-regulated at Fe+ ; PFL (pyruvate formate lyase) is up-regulated at Fe−