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. 1991 Aug;57(8):2246–2250. doi: 10.1128/aem.57.8.2246-2250.1991

Production of the siderophore aerobactin by a halophilic pseudomonad.

J S Buyer 1, V de Lorenzo 1, J B Neilands 1
PMCID: PMC183558  PMID: 1768095

Abstract

A bacterial strain, isolated from a cyanobacterial culture, was identified as Pseudomonas sp. strain X40. Under iron-limiting conditions, the Pseudomonas sp. produced aerobactin, a dihydroxamate siderophore previously found only in the family Enterobacteriaceae. Aerobactin was identified by electrophoretic mobility, spectrophotometric titration, proton nuclear magnetic resonance spectroscopy, mass spectrometry, acid hydrolysis, and biological activity. Aerobactin was used as a siderophore in the Pseudomonas sp. and Escherichia coli. Two iron-repressed outer membrane proteins were observed in the Pseudomonas sp., neither of which had electrophoretic mobility identical to that of the aerobactin outer membrane receptor protein from E. coli. DNA hybridization assays showed no hybridization to the aerobactin genes from the E. coli plasmid pColV, indicating that the genetic determinants for aerobactin production by Pseudomonas strain X40 differ substantially from those found in the archetypic enteric plasmid pColV-K30.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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