TABLE 1.

β-Glucuronidase activity of reporter gene uidA under the control of the upstream region of the sltF gene

Vector	Mean activity (nmol/min/mg of protein) ± SD
	WS8N	SP13 (ΔfleQ)
Empty vector	0.09395 ± 0.0233	0.132 ± 0.0229
Up120sltFprev	2.6865 ± 0.7248	NDa
Up120sltFpfw	123.755 ± 25.5741	0.11905 ± 0.0204

^aND, not determined.