TABLE 1.

MICs of lantibiotics against M. luteus DSM 1790 in the absence and presence of 1.25 mM CaCl₂^a

Lantibiotic	MIC (μg/ml)
	Without CaCl2	With 1.25 mM CaCl2
Mersacidin	1.25	0.31
Plantaricin C	2.5	1.25
Lacticin 481	1.25	1.25
Lacticin 3147	1.25	0.63
LtnA1	>10	>10
LtnA2	>10	>10

^aLtnA1 and LtnA2 were used at a 1:1 molar ratio; calculations of the MIC are based on the molecular weight of the A1 peptide.