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. 2018 Sep 21;17:151. doi: 10.1186/s12934-018-0991-y

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© The Author(s) 2018

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 — Schematic representation of xylose-induced expression vectors pXC, pXCBR, pLR, and pXCPR. oriT, origin of transfer; oriV, replication origin of E. coli from pK18mob (ATCC^® 87095™); rep pIJ101 and rep pSG5, replicon of Streptomyces from pIJ101 [25] and pGM160 [36]; tsr, thiostrepton resistance gene; km, kanamycin resistance gene