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. 2023 Nov 16;6:1170. doi: 10.1038/s42003-023-05528-0

Table 2.

MIC and MBC values of the peptides.

Strains LBP14 LBP14-RKRR L7 R7 LBP14 + L7 a LBP14-RKRR + L7 a PMB A7 b G7 c
MIC (μM) MBC (μM) MIC (μM) MBC (μM) MIC (μM) MBC (μM) MIC (μM) MBC (μM) MIC (μM) MBC (μM) MIC (μM) MBC (μM) MIC (μM) MBC (μM) MIC (μM) MBC (μM) MIC (μM) MBC (μM)
Gram-negative bacteria
Escherichia coli CVCC195 d 4.53 4.53 2.26 2.26 2.26 4.53 1.13 1.13 1.13 2.26 1.13 2.26 1 1 36.2 36.2 18.1 18.1
S. typhimurium CVCC533 18.1 18.1 4.53 128 18.1 18.1 1.13 2.26 4.53 4.53 4.53 4.53 8 8 >36.2 >36.2 >36.2 >128
Gram-positive bacteria
Staphylococcus aureus ATCC43300 b 36.2 36.2 4.53 64 18.1 18.1 2.26 2.26 9.06 9.06 2.26 2.26 >64 >64 >36.2 >36.2 >36.2 >36.2
S. aureus CVCC546 b 36.2 >36.2 9.06 9.06 18.1 36.2 2.26 2.26 4.53 4.53 2.26 2.26 >64 >64 >36.2 >36.2 >36.2 >36.2

a1:1 mixture of LBP14 (or LBP14-RKRR) and L7.

bA7: connect LBP14 and L7 via rigid linker (EA3K)213.

cG7: connect LBP14 and L7 via flexible linker G4S13.

dThe strains are resistant to different antibiotics13,62. The MDR E. coli CVCC195 strain is resistant to doxycycline, benzocillin, penicillin, lincomycin, clindamycin, vancomycin, chloramphenicol, erythromycin, amikacin, streptomycin, gentamicin and sulfamethoxazole, respectively. The S. aureus ATCC43300 strain is resistant to lincomycin, amoxicillin, amikacin, ampicillin, oxacillin, erythrocin, sulfisoxazole, neomycin, azithromycin, kanamycin, gentamicin, and penicillin, respectively. The S. aureus CVCC546 strain is resistant to tetracycline, bacitracin, and sulfisoxazole, respectively.