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. Author manuscript; available in PMC: 2008 May 29.
Published in final edited form as: J Biol Chem. 2006 Oct 20;282(1):397–406. doi: 10.1074/jbc.M605333200

TABLE 1. Concentrations of FeEnt resulting in 50% inhibition of solute interaction with FepA (IC50).

Each experiment was performed three or four times, and the mean values were analyzed by the IC50 algorithm of Grafit 5.013 (Erithacus Ltd., Surrey, UK).

Solute Host strain fepA allele IC50
μm
59FeTrn OKN3 + 0.008 ± 0.002
Colicin B OKN3 + 0.09 ± 0.02
FM OKN3 G54C 0.07 ± 0.07
FM OKN13 G54C 0.04 ± 0.02
FM OKN3FC G54C 0.25 ± 0.24