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. 2006 Dec 22;189(5):1698–1710. doi: 10.1128/JB.01526-06

FIG. 5.

FIG. 5.

FTICR MS/MS of 3,4-DHB-SPD and 3,4-DHB-SPD-CT isolated from the B. anthracis ΔasbB mutant and petrobactinBa from the wild type. A, SORI-CAD mass spectrum from 3,4-DHB-SPD; B, SORI-CAD mass spectrum of 3,4-DHB-SPD-CT; C and D, assignments of selected fragments from 3,4-DHB-SPD, suggesting the isomers 2 and 2′; E and F, assignments of selected fragments from 3,4-DHB-SPD-CT, suggesting the isomers 3 and 3′; G, SORI-CAD mass spectrum of petrobactinBa; H, assignments of selected fragments from petrobactinBa.