Metabolomic analysis of siderophore cheater mutants reveals metabolic costs of expression in uropathogenic Escherichia coli

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

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

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
DOIs
StatePublished - Mar 7 2014

Keywords

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

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