Table 2.

Antibiotic sensitivity of E. coli CE1265 expressing the signal sequence of PhoE (pJP29_U), NalP_β (pPU361) or NalP_βΔhelix (pPU363)

Antibiotic	Concentration	MW	pJP29_Ua	pPU361	pPU363
Cycloserin	1 mg/ml	102	0	0	0
Nalidixin	1 mg/ml	254	3	6	8
Ampicillin	1.5 mg/ml	371	0	3	7
Tetracycline	2 mg/ml	444	7	8	9
Rifampicin	0.3 mg/ml	823	1	6	12
Bacitracine	690 IE/ml	1421	0	5	8
Vancomycin	5 mg/ml	1485	1	8	11
SDS	1 mg/ml	288	0	0	0
aThe growth inhibition zone, caused by the sensitivity to the antibiotic, was measured in mm from the rim of the disc. Values are the mean of three measurements of independent transformants.