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    Polymyxins are considered the last line of defense against multidrug-resistant bacteria. The regulatory mechanism of polymyxin synthesis is poorly studied in Paenibacillus polymyxa. In this study, we found that Abh and AbrB3 negatively regulated, whereas Spo0A positively regulated polymyxin synthesis in P. polymyxa SC2. In addition, a regulatory relationship between Abh, AbrB3, and Spo0A was revealed, which regulate polymyxin synthesis via multiple regulatory mechanisms in P. polymyxa.

    Citation

    Yanru Cui, Dongying Zhao, Kai Liu, Xiangui Mei, Shanshan Sun, Binghai Du, Yanqin Ding. Abh, AbrB3, and Spo0A play distinct regulatory roles during polymyxin synthesis in Paenibacillus polymyxa SC2. Microbiology spectrum. 2024 Jan 11;12(1):e0229323

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    PMID: 38054717

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