Table 2. Role of quorum sensing in expression from the A1S_0112 promoter.

Strain	Growth condition*	β-Galactosidase activity (Miller units)
M2 wild-type/A1S_0112-lacZ	LB	8.7±0.7
M2 wild-type/A1S_0112-lacZ	LB+AHL	15.6±0.9
M2 abaI : : Km/A1S_0112-lacZ	LB	2.1±0.1
M2 abaI : : Km/A1S_0112-lacZ	LB+AHL	15.0±0.5

^*Cells were harvested at OD₆₀₀ 0.6. Supplementation of LB was with 10 µM 3-OH C₁₂-HSL (AHL).