The pilus-like components of Shewanella oneidensis bacteria conduct electricity because they are elongated and arranged in bundles, adopting a nanowire-like structure.

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References

"Likewise, Shewanella oneidensis MR-1 produces pilus-like structural components (Gorby et al., 2006). In this case, contrary to Geobacter species, the nanowires are arrayed in larger bundles, often reaching 50nm in diameter, and extending many micrometers from the producing cell. Experiments with gold-labeled antibodies have shown that these highly conductive nanowires are decorated with surface proteins, including some of the major decaheme proteins generally involved in iron reduction (Gorby et al., 2006)." (Rabaey et al. 2007:11)

Journal article
Microbial ecology meets electrochemistry: Electricity-driven and driving communities

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Living System/s

Organism
Shewanella OneidensisSpecies

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