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. 2025 Aug 25;15:31312. doi: 10.1038/s41598-025-17044-8

Table 2.

Cefiderocol MIC in E. coli keio wild-type strains as well as in ΔcirA, ΔybiX and ΔcirAybiX strains with and without the blaKPC-2 (with D179Y-D209V) or blaKPC-33 (D179Y) plasmids.

Strains Cefiderocol MIC (mg/L) Fold-increase in cefiderocol MIC compared to strains without plasmid Fold-increase in cefiderocol MIC compared to keio WT
keio WT 0.03
keio WT + blaKPC-2 (with D179Y-D209V) 0.5 16 16
keio WT + blaKPC-33 (D179Y) 0.5 16 16
keio ΔcirA 0.12 4
keio ΔcirA + blaKPC-2 (with D179Y-D209V) 2 16 66
keio ΔcirA + blaKPC-33 (D179Y) 4 32 133
keio ΔybiX 0.03
keio ΔybiX + blaKPC-2 (with D179Y-D209V) 1 32 32
keio ΔybiX + blaKPC-33 (D179Y) 0.5 16 16
keio ΔcirAybiX 0.5 16
keio ΔcirAybiX + blaKPC-2 (with D179Y-D209V) > 32 64 1066
keio ΔcirAybiX + blaKPC-33 (D179Y) > 32 64 1066