Table 1. MIC of beta-lactam antibiotics conferred by BLA and variants of BLA.

MIC for indicated antibiotic (µg/ml)
Protein	Cefotaxime	Ampicillin	Cefazolin	Cephalothin
MBP a (Control)	0.02	2	1	4
MBP317-347 a	0.04	512	2	8
BLA b	0.04	8192	16	64
CFX011 b	0.18	≤2048	≤8	≤32
CFX019 b	0.16	≤2048	≤8	≤32

^aat 37°C.

^bat 22°C.