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Characterization of the chromophores of pyoverdins and related siderophores by electrospray tandem mass spectrometry

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Characteristic fragment ions of the various chromophores of the pyoverdin siderophore family obtained by collision activated dissociation of the [M+2H]2+ ions are reported allowing unambiguous identification. Tandem mass spectrometrical studies revealed the existence of the first example of a ferribactin with a succinamide side chain, and they add some information to the problem in which way a malic acid side chain is attached to the chromophore.

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Correspondence to Herbert Budzikiewicz.

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Budzikiewicz, H., Schäfer, M., Fernández, D.U. et al. Characterization of the chromophores of pyoverdins and related siderophores by electrospray tandem mass spectrometry. Biometals 20, 135–144 (2007).

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