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  • Title: Amino acid 17 in QRDR of Gyrase A plays a key role in fluoroquinolones susceptibility in mycobacteria.
    Author: Wang S, Zhang J, Hameed HMA, Ding J, Guan P, Fang X, Peng J, Su B, Ma S, Tan Y, M Cook G, Zhang G, Lin Y, Zhong N, Hu J, Liu J, Zhang T.
    Journal: Microbiol Spectr; 2023 Dec 12; 11(6):e0280923. PubMed ID: 37831477.
    Abstract:
    Fluoroquinolones (FQs) play a key role in the treatment regimens against tuberculosis and non-tuberculous mycobacterial infections. However, there are significant differences in the sensitivities of different mycobacteria to FQs. In this study, we proved that this is associated with the polymorphism at amino acid 17 of quinolone resistance-determining region of Gyrase A by gene editing. This is the first study using CRISPR-associated recombination for gene editing in Mycobacterium abscessus to underscore the contribution of the amino acid substitutions in GyrA to FQ susceptibilities in mycobacteria.
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