TABLE 1.

Epoxide hydrolases in various classes of sequenced organisms

Domain	Class	No. of organisms sequenced	No. of organisms in which an EH(s) was detecteda	Avg no. of EHs per EH-containing strainb	Subclass(es) with many EHs	No. of EHs used in alignmentc
Archaea		24	1 (4)	1 (1)		1
Bacteria	Actinobacteria	30	18 (60)	5 (1-11)	Mycobacteria, Streptomycetes	67
	Chlamydiae	11
	Cyanobacteria	16	7 (44)	1.6 (1-3)		11
	Firmicutes	103	2 (2)	1 (1)		2
	α-Proteobacteria	39	12 (31)	3.3 (1-12)	Rhizobiaceae	41
	β-Proteobacteria	25	12 (48)	3.3 (1-9)	Burkholderiaceae	38
	δ-Proteobacteria	8	1 (13)	1 (1)		2
	ɛ-Proteobacteria	6
	γ-Proteobacteria	91	8 (9)	2.9 (1-7)	Pseudomonadaceae	24
	Spirochaetales	6	1 (17)	3 (3)		3
	Others	30	4 (13)	1.5 (1-2)		13
Eukaryota	Fungi/metazoa	37	21 (57)	2.5 (1-10)	Ascomycota	59
	Others	10	4 (40)	2.5 (1-4)		26

^aThe percentage of epoxide hydrolase-containing organisms within each class is indicated in parentheses.

^bThe range of putative epoxide hydrolase genes per strain is indicated in parentheses.

^cIncluding known epoxide hydrolases.