TABLE 4.

RNase III dependence of β-galactosidase activity specified by different Φ(adhE-lacZ) fusion constructs^a

Strain	Relevant genotype	β-Galactosidase activity (Miller units)
ECL4012	Φ(adhE-lacZ)656 protein fusion	9,000 ± 360
ECL4016	Φ(adhE-lacZ)656 protein fusion; rnc::Tn10	620 ± 60
ECL4013	Φ(adhE-lacZ)656 operon fusion	9,900 ± 280
ECL4017	Φ(adhE-lacZ)656 operon fusion; rnc::Tn10	9,800 ± 150
ECL4010	Φ(adhE-lacZ)291 protein fusion	3,400 ± 110
ECL4018	Φ(adhE-lacZ)291 protein fusion; rnc::Tn10	3,500 ± 150

^aThe cells were grown anaerobically on LB-glucose medium and assayed in the exponential phase of growth (OD₆₀₀, 0.4).