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The Structures of the Pyoverdins from Two Pseudomonas fluorescens Strains Accepted Mutually by Their Respective Producers

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The Structures of the Pyoverdins from Two Pseudomonas fluorescens Strains Accepted Mutually by Their Respective Producers

Insa Barelmann

a

, Kambiz Taraz

a

, Herbert Budzikiewicz

a,

* Vale´rie Geoffroy

b

and Jean-Marie Meyer

b

a Institut für Organische Chemie der Universität zu Köln, Greinstr. 4, 50939 Köln, Germany.

Fax: +49-221-470-5057. E-mail: h.budzikiewicz@uni-koeln.de

b Laboratoire de Microbiologie et Ge´ne´tique, Universite´ Louis Pasteur, UPRES-A 7010 du CNRS, 28 rue Goethe, 67083 Strasbourg, France

* Author for correspondence and reprint requests

Z. Naturforsch.57 c,9Ð16 (2002); received September 25/October 15, 2001 Pseudomonas fluorescens, Iron Uptake, Siderophore

FromPseudomonas fluorescensPL7 and PL8 structurally related pyoverdins were isolated and their primary structures were elucidated by spectroscopic methods and degradation reac- tions. Despite of some structural differences both Fe(III) complexes are taken up by either strain with a high rate. The implications regarding the recognition at the cell surface are dis- cussed.

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