. Author manuscript; available in PMC: 2012 Apr 1.

Published in final edited form as: Arch Microbiol. 2011 Jan 12;193(4):263–274. doi: 10.1007/s00203-010-0669-2

Table 2.

Contribution of P2 promoter activity to total icsP promoter activity

Environmental parameter	Specific condition in Luria-Bertani medium	Percent contribution^a
pH	7.4	75.54 ± 6.96
	5.5	61.88 ± 19.55
Iron concentration	Normal (0 µg ml^-1 EDDA)	69.86 ± 1.12
	Reduced (15 µg ml^-1 EDDA)	74.81 ± 5.48
Osmotic pressure	Normal NaCl concentration (LB)	72.32 ± 0.07
	Half NaCl concentration (LO)	67.20 ± 3.96

Average percent contributions are based upon the promoter activity of P2 (pKML03) compared to the total promoter activity (pHJW20). Assays were run in triplicate and the means and standard deviations are shown.