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. 2015 Dec 30;14:208. doi: 10.1186/s12934-015-0399-x

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© Linares 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. 1 — Genetic organization of the AGDI cluster of L. lactis CECT 8666. Physical map showing the cluster to be composed of five genes: aguR which encodes a transcription regulator, followed by aguB, aguD, aguA and aguC, which encode the proteins involved in the putrescine biosynthesis pathway (GenBank: AZSI00000000.1). The P_aguR and P_aguB promoters are shaded in grey, and the terminators indicated. The predicted transcripts are indicated below (dotted arrows). The cre site is shaded in black