TABLE 2.

Pairwise comparison of percent amino acid sequence identity between class B β-lactamases^a

Enzyme	% Amino acid identity with:
	CcrA	Bc-II	VIM-1	IND-1	BlaB	CphA	L1	FEZ-1
IMP-1	37.7	37.1	31.4	32.2	31.1	24.2	15.7	13.9
CcrA		33.6	31.6	29.8	28.6	27.6	15.9	8.2
Bc-II			38.7	35.0	26.4	30.1	18.9	13.3
VIM-1				28.1	26.3	26.2	16.0	7.7
IND-1					45.2	26.8	13.4	14.9
BlaB						28.4	11.5	14.8
CphA							16.1	13.7
L1								29.7

^aEnzyme names are explained in the legend to Fig. 4.