Methanobactins: Maintaining copper homeostasis in methanotrophs and beyond

Grace E. Kenney, Amy C. Rosenzweig*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

35 Scopus citations


Methanobactins (Mbns) are ribosomally produced, post-translationally modified natural products that bind copper with high affinity and specificity. Originally identified in methanotrophic bacteria, which have a high need for copper, operons encoding these compounds have also been found in many non-methanotrophic bacteria. The proteins responsible for Mbn biosynthesis include several novel enzymes. Mbn transport involves export through a multidrug efflux pump and re-internalization via a TonB-dependent transporter. Release of copper from Mbn and the molecular basis for copper regulation of Mbn production remain to be elucidated. Future work is likely to result in the identification of new enzymatic chemistry, opportunities for bioengineering and drug targeting of copper metabolism, and an expanded understanding of microbial metal homeostasis.

Original languageEnglish (US)
Pages (from-to)4606-4615
Number of pages10
JournalJournal of Biological Chemistry
Issue number13
StatePublished - Jan 1 2018

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Cell Biology


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