TABLE 2.

Activation from P_hbpC and P_hbpD in dependency of ς⁵⁴

Strain	Plasmidsd	Luciferase activity (relative light units) ± SDa with:		Induction factorc
		No inducer	2-HBPb
ET8000	pHYBP103, pHYBP124	7.48E+04 ± 1.27E+04	1.49E+06 ± 2.21E+05	20
	pHYBP106, pHYBP124	1.89E+05 ± 9.49E+03	1.34E+06 ± 1.26E+05	7.1
ET8045e	pHYBP103, pHYBP124	8.50E+04 ± 5.00E+03	8.11E+04 ± 7.94E+03	0.95
	pHYBP106, pHYBP124	2.39E+05 ± 1.57E+04	2.49E+05 ± 1.02E+04	1.1

^aAll values were obtained in two independent experiments, each performed in triplicate. 

^bAssay concentration for 2-HBP was 0.2 mM. 

^cInduction factor is the quotient of the bioluminescence measured with and without the inducer. 

^dpHYBP103 contains hbpC::luxAB; pHYBP106 contains hbpD::luxAB; pHYBP124 contains hbpR. 

^eRpoN mutant.