TABLE 1.

Comparison of the pattern of β-lactam resistance of the Yersinia mollaretii strain with those mediated by the expression of YEM-1 in E. coli DH5α and E. coli Rosetta(DE3)

Antibiotic	MIC for:
	E. coli DH5α/pET-26b-blaYEM-1	E. coli Rosetta(DE3)/pET-26b-blaYEM-1	E. coli DH5α	E. coli Rosetta(DE3)	Yersinia mollaretii ATCC 43969
Imipenem	0.12	>64	<0.12	<0.12	0.5
Meropenem	0.12	1	<0.12	<0.12	<0.12
Ertapenem	0.12	16	<0.12	<0.12	<0.12
Doripenem	0.12	2	<0.12	<0.12	<0.12
Biapenem	<0.12	<0.12	<0.12	<0.12	<0.12
Piperacillin	1	32	0.5	32	4
Cephaloridine	2	4	0.5	4	4
Cefotaxime	<0.12	0.5	<0.12	0.5	0.12