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. 2018 Feb 16;8:3149. doi: 10.1038/s41598-018-21302-3

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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 images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Schematic representation of the V. cholerae strains and conditions compared in the transcriptomics analysis. V. cholerae WT and its derivative mutant strains were grown in minimal T medium with or without riboflavin as indicated. Four transcriptomics comparisons were performed. In order to identify genes whose expression is regulated by riboflavin, transcriptomes of WT in T versus WT in T plus riboflavin were compared (comparison (a)). Comparison of WT versus ΔribD (b) allowed to identify genes affected by the lack of riboflavin biosynthesis. Comparison (c) identified genes affected by the lack of riboflavin transport through RibN. Finally, comparison of the ΔribN strain with and without riboflavin pinpointed genes affected by riboflavin independently of its uptake through RibN.