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. 2019 Feb 21;17(2):128. doi: 10.3390/md17020128

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Detection of the quorum quenching (QQ) activity of BbMomL. (A) Degradation of the exogenous signal molecule C6-HSL by BbMomL. The concentration of the pure MomL protein was 1.363 mg/mL. (B) Determination of whether Pcc and P. aeruginosa PAO1 can generate AHL signal molecules. (C) Degradation of the 3-oxo-hexanoyl-homoserine-lactone (OHHL) signal molecule by BbMomL. (D) Degradation of the signal molecule produced by P. aeruginosa PAO1 by BbMomL. The negative control was B. brevis (pNCMO2 transformant). The results shown are representative of biological duplicates. Error bars represent the standard deviations of three replicates. A t-test of unpaired unequal variance was performed for testing differences between groups. For statistical analysis, ***, **, and * indicate P < 0.001, P < 0.01, and P < 0.05, respectively.