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. 2013 Feb 15;8(2):e56746. doi: 10.1371/journal.pone.0056746

Figure 3. Elemental analysis of SEC peaks by ICP-MS.

Figure 3

Values given are means of triplicates and relate to measured iron content by ICP-MS in the SEC fraction collected at 11–13 ml, corresponding to the elution position of the FrpB monomer. 33 µM FrpB F3-3 was mixed with either 990 µM Fe-citrate or 330 µM Fe-enterobactin, before separation by SEC.