Characterisation of the pvdE gene which is required for pyoverdine synthesis in Pseudomonas aeruginosa

B. J. McMorran, M. E. Merriman, I. T. Rombel, I. L. Lamont*

*Corresponding author for this work

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

Pseudomonas aeruginosa (Pa) strain PAO synthesises a siderophore, pyoverdine (Pvd), when grown under conditions of iron starvation. Pvd consists of a dihydroxyquinoline group attached to an 8-amino-acid-residue peptide. DNA spanning at least 78 kb of the chromosome is required for Pvd synthesis, but to date only three genes involved in this process have been characterised. We report the characterisation of a fourth Pa gene, pvdE, which we show to be required for Pvd synthesis. The deduced amino acid sequence of PvdE indicates that the protein is a member of the ATP-binding-cassette (ABC) family of membrane transporter proteins, and this is the first example of the involvement of an ABC-type protein in siderophore synthesis.

Original languageEnglish
Pages (from-to)55-59
Number of pages5
JournalGene
Volume176
Issue number1-2
DOIs
Publication statusPublished - 17 Oct 1996

Keywords

  • ABC transporter protein
  • Fluorescent pseudomonad
  • Siderophore synthesis

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