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The nutritional selectivity of a siderophore-catabolizing bacterium

journal contribution
posted on 01.12.1993, 00:00 authored by R DeAngelis, Maria ForsythMaria Forsyth, D Castignetti
The ability of a siderophore-catabolizing bacterium to assimilate ferric ion was examined. While the bacterium utilizes the siderophore deferrioxamine B (DFB) as a carbon source, it was incapable of using the ferricion analogue (ferrioxamine B) as an iron source. It did, however, assimilate the ferric ion of the chelator ferric nitrilotriacetic acid and of the siderophore ferrirhodotorulic acid (ferriRA). Neither ferriRA nor its deferrated analog (RA), however, were capable of functioning as carbon sources for the bacterium. The microbe thus employs a nutritional selectivity with respect to these two siderophores. That is, it does not use the siderophore it employs as a carbon source (DFB) as an iron source nor does the siderophore utilized as an iron source, i.e. ferriRA, nor its deferrated analog (RA), serve as carbon sources for the organism.

History

Journal

BioMetals

Volume

6

Issue

4

Pagination

234 - 238

Publisher

Kluwer Academic Publishers

Location

Amsterdam, The Netherlands

ISSN

0966-0844

eISSN

1572-8773

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

1993, Rapid Communications of Oxford Ltd