Electrically conductive bacterial nanowires produced by Shewanella oneidensis strain MR-1 and other microorganisms

Shewanella oneidensis MR-1 produced electrically conductive pilus-like appendages called bacterial nanowires in direct response to electron-acceptor limitation. Mutants deficient in genes for c-type decaheme cytochromes MtrC and OmcA, and those that lacked a functional Type II secretion pathway displayed nanowires that were poorly conductive. These mutants were also deficient in their ability to reduce hydrous ferric oxide and in their ability to generate current in a microbial fuel cell. Nanowires produced by the oxygenic phototrophic cyanobacterium Synechocystis PCC6803 and the thermophilic, fermentative bacterium Pelotomaculum thermopropionicum reveal that electrically conductive appendages are not…

• UD
  U.S. Department of Energy

  Awards: 76RL01830, AC05-76RL01830, Contract DE-AC05-76RL01830, DE-AC05-76RL01830, DE-AC05
• B
  Battelle

  Awards: AC05-76RL01830, DE-AC05, DE-AC05-76RL01830
• KI
  Korea Institute of Science and Technology
• BA
  Biological and Environmental Research

  Awards: AC05-76RL01830, 76RL01830, DE-AC05-76RL01830
• PN
  Pacific Northwest National Laboratory

  Awards: DE-AC05-76RL01830, 76RL01830