TABLE 2.

A comparison of the known AHL lactonases

Name	Strain or source	Protein family	Zinc-binding motif	Reference or source
AiiM	M. testeceum StLB037	α/β Hydrolase fold family	NFa	This study
AiiA	Bacillus sp. 240B1	Metallo-β-lactamase superfamily	HXHXDH	5
AttM	A. tumefaciens C58	Metallo-β-lactamase superfamily	HXHXDH	34
AhlD	Arthrobacter sp. IBN110	Metallo-β-lactamase superfamily	HXHXDH	23
QsdA	R. erythropolis W2	PTE superfamily	PTE domain	30
BpiB01	Soil metagenome	Hypothetical protein family	NF	27
BpiB04	Soil metagenome	Glycosyl hydrolase family	NF	27
BpiB07	Soil metagenome	Dienelactone hydrolase family	NF	27
QlcA	Soil metagenome	Metallo-β-lactamase superfamily	HXHXDH	24

^aNF, not found.