Can the Peptide Chain of a Pyoverdin be Bound by an Ester Bond to the Chromophore? - The Old Problem of Pseudobactin 7SR1

The structure which had been proposed for the pyoverdin named pseudobactin 7SR1 (Yang and Leong, 1984) differed from those of all other pyoverdins investigated sofar: its peptide chain was supposedly linked to the chromophore not by an amide bond originating from its N-terminal amino acid, but rathe...

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Published inZeitschrift für Naturforschung C. A journal of biosciences Vol. 55; no. 3; pp. 153 - 164
Main Authors Voßen, Werner, Fuchs, Regine, Taraz, Kambiz, Budzikiewicz, Herbert
Format Journal Article
LanguageEnglish
Published Germany Verlag der Zeitschrift für Naturforschung 01.03.2000
Subjects
Esters
Molecular Structure
Oligopeptides - chemistry
Peptides - chemistry
Pseudomonas fluorescens
Pyoverdin
Siderophore
Spectrum Analysis
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Summary:The structure which had been proposed for the pyoverdin named pseudobactin 7SR1 (Yang and Leong, 1984) differed from those of all other pyoverdins investigated sofar: its peptide chain was supposedly linked to the chromophore not by an amide bond originating from its N-terminal amino acid, but rather by an ester bond involving one of the three Ser. It will be shown that the peptide chain of pseudobactin 7SR1 is actually bound to the chromophore amidically by its N-terminal Ser and that it comprises a cyc/odepsipeptidic substructure with an ester bond between the C-terminal Thr and the OH-group of the second Ser in the chain.
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ISSN:0939-5075
1865-7125
DOI:10.1515/znc-2000-3-405