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. 2006 Jun;188(11):3785–3795. doi: 10.1128/JB.00027-06

FIG. 3.

FIG. 3.

MS of HPLC-purified LVS siderophore. (A) Full mass spectrum, showing major peaks at m/z 459 and m/z 437, a finding consistent with sodiated and protonated forms of rhizoferrin, respectively. (B) MS/MS of the m/z 437 peak showing several dehydrated and decarboxylated species and a peak at m/z 263 consistent with protonated (rhizoferrin-citryl) species. (C) MS/MS of the m/z 459 peak showing several dehydrated and decarboxylated species and a peak at m/z 285 consistent with sodiated (rhizoferrin-citryl) ion. The structure of rhizoferrin (12) is shown as a reference.