Effects of lactose as an inducer on expression of Helicobacter pylori rUreB and rHpaA, and Escherichia coli rLTKA63 and rLTB

Table 1 Expression outputs of rUreB, rHpaA, rLTKA63 and rLTB proteins induced by different concentrations of lactose and temperatures

Concentrationsof lactose(g/L)and IPTG(mmol/L)	Expression outputs (% of total bacterial proteins)
	rUreB		rHpaA		rLTKA63		rLTB
	(37 °C )	(28 °C )	(37 °C )	(28 °C )	(37 °C )	(28 °C )	(37 °C )	(28 °C )
Lactose (50)	40.59	26.38	50.35	44.72	23.36	22.41	39.55	21.91
(10)	50.52	39.70	57.61	44.86	35.84	27.09	42.66	26.17
(5)	30.51	22.17	60.80	46.42	35.64	22.09	26.99	23.94
(1)	27.33	18.92	54.00	50.29	21.91	21.73	23.33	10.65
(0.5)	20.78	13.63	42.29	36.05	22.01	12.24	14.72	10.31
IPTG (0.5)	16.66	14.72	30.65	22.61	16.75	14.48	12.36	10.06