Fig. 3.

Salt dependence of antimicrobial activity of linear and disulfide bridged hBD3 against E. coli. Oxidized hBD3 and [Abu]-hBD3 were assayed against E. coli ATCC 25922 at a fixed concentration of 20 μg/ml, as described in Materials and Methods, except that NaCl at concentrations noted in the figure were included in the assay buffer (10 mM potassium phosphate, pH 7.4).