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. 2019 Dec 3;7:367. doi: 10.3389/fbioe.2019.00367

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Copyright © 2019 Pan, Sun, Tang, Liu, Zhang, You, Osire, Sun, Zhao, Xu, Yang and Rao.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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D-Ala-D-Ala carboxypeptidase DacB, DacC, and DacD do not participate in the synthesis of prodigiosin. (A) Predicted domain structures of S. marcescens D-Ala-D-Ala Carboxypeptidase DacB, DacC, and DacD. (B) Effect of dacB, dacC, and dacD deletion on prodigiosin production and cell growth. Red lines represent the prodigiosin production and blue lines represent biomass (OD₆₀₀). The experiments were performed in biological triplicates. Error bars indicate the standard deviations. JNB5-1 is wild-type strain, JNB5-1ΔDacB is dacB mutant. JNB5-1ΔDacC is dacC mutant, and JNB5-1ΔDacD is dacD mutant.