Metabolomic Analysis of Siderophore Cheater Mutants Reveals Metabolic Costs of Expression in Uropathogenic Escherichia coli

Haitao Lv*, Chia S. Hung, Jeffrey P. Henderson

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

40 Citations (Scopus)

Abstract

Bacterial siderophores are a group of chemically diverse, virulence-associated secondary metabolites whose expression exerts metabolic costs. A combined bacterial genetic and metabolomic approach revealed differential metabolomic impacts associated with biosynthesis of different siderophore structural families. Despite myriad genetic differences, the metabolome of a cheater mutant lacking a single set of siderophore biosynthetic genes more closely approximate that of a non-pathogenic K12 strain than its isogenic, uropathogen parent strain. Siderophore types associated with greater metabolomic perturbations are less common among human isolates, suggesting that metabolic costs influence success in a human population. Although different siderophores share a common iron acquisition function, our analysis shows how a metabolomic approach can distinguish their relative metabolic impacts in E. coli.

 

Original languageEnglish
Pages (from-to)1397-1404
Number of pages8
JournalJournal of Proteome Research
Volume13
Issue number3
Early online date7 Feb 2014
DOIs
Publication statusPublished - Mar 2014

Scopus Subject Areas

  • Biochemistry
  • Chemistry(all)

User-Defined Keywords

  • metabolomics
  • siderophores
  • primary metabolism
  • salmochelin
  • uropathogenic Escherichia coli
  • metabolic cost

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