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. Author manuscript; available in PMC: 2023 May 31.
Published in final edited form as: Anal Chem. 2022 May 16;94(21):7460–7465. doi: 10.1021/acs.analchem.1c05394

Figure 2.

Figure 2.

FLATn mass spectra of m/z 1919.2206, where the samples were obtained from (a) Single colony (Top) and human urine sample (Bottom), (b) liquid culture with gentamicin (50 μg/mL, Top) and without gentamicin (Bottom). Asterisk mark (*) in the mass spectra indicates precursor ion at m/z 1919.2206. The structure of 4’ (c) and 1-phosphate group (d) modification with PEtN (e) a bar graph of ratio of intensities of two ions between 1267.8095 and 833.4335, which represents 4’- and 1-phosphate group modification by PEtN addition, respectively. **Agar plate with gentamicin (50 μg/mL)