TABLE 1.

MICs of E. coli recipient strains J53 and DH5α and derivatives containing plasmids pEK499, pEK516, and pEK204

Antibiotic	MIC (μg/ml) for indicated strain
	J53	J53(pEK499)	J53(pEK204)	DH5α	DH5α(pEK516)
Ampicillin	8	>64	>64	16	>64
Co-amoxiclav	8	32	16	8	16
Aztreonam	≤0.125	>64	8	0.25	32
Cefotaxime	≤0.125	256	64	0.25	128
Cefotaxime + clavulanate	≤0.060	0.125	0.125	≤0.060	≤0.060
Ceftazidime	0.25	64	2	0.25	16
Ceftazidime + clavulanate	0.25	0.5	0.25	0.25	0.25
Cefpirome	≤0.125	>64	16	≤0.125	64
Cefpirome + clavulanate	≤0.060	≤0.060	≤0.060	≤0.060	≤0.060
Cefoxitin	8	8	8	8	8
Piperacillin	4	>64	>64	4	64
Piperacillin-tazobactam	4	16	4	4	4
Imipenem	0.25	0.25	0.25	0.5	0.25
Meropenem	≤0.060	≤0.060	≤0.060	≤0.060	≤0.060
Ertapenem	≤0.125	≤0.125	≤0.125	≤0.125	≤0.125
Ciprofloxacin	≤0.125	≤0.125	≤0.125	≤0.125	≤0.125
Amikacin	≤0.5	4	≤0.5	1	2
Gentamicin	0.25	0.25	0.25	0.5	8
Tobramycin	0.25	8	0.5	0.5	8
Streptomycin	1	32	2	1	0.5
Chloramphenicol	2	2	2	2	2
Minocycline	0.25	2	0.25	0.25	4
Tetracycline	1	32	1	1	32
Tigecycline	≤0.250	≤0.250	≤0.250	≤0.250	≤0.250
Sulfamethoxazole	16	>1024	16	2	2
Trimethoprim	0.06	>32	0.06	0.06	0.03
Colistin	≤0.5	≤0.5	≤0.5	≤0.5	≤0.5