TABLE 2.

Relative amounts of acyl-HSLs produced by wild-type bacteria and by heterologous hosts expressing cloned acyl-HSL synthase genes^a

Source of extract	Relative concentrations of acyl-HSL signalsb
	Hydroxy-acyl-HSLs				Alkanoyl-acyl-HSLs
	C6	C7	C8	C10	C4	C5	C6	C8
2-79 wild type	61.10	7.10	23.40	7.50	NDc	0.20	0.20	0.10
30-84 wild type	64.70	6.60	22.70	0.70	4.3	0.30	0.30	ND
E. coli(phzI2-79)	60.40	1.70	33.80	3.50	0.10	0.05	0.20	0.10
E. coli(phzI30-84)	60.20	5.50	29.50	4.00	0.01	0.20	0.20	0.10
1855-344(phzI30-84)	65.40	0.30	26.10	6.80	0.20	0.30	0.70	0.30
E. coli(csaI30-84)	ND	ND	ND	ND	97.80	1.70	0.04	ND

^aValues are the averages of two independent experiments.

^bPresented as percentages of the total amount of acyl-HSLs produced by the indicated strain.

^cND, not detectable.