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Comparison of pili conductivities. (A) Comparison of the conductivity of G. metallireducens pili (this study), wild-type G. sulfurreducens pili (3), G. uraniireducens pili (17), and synthetic pili W51W57 expressed in G. sulfurreducens (5). (B) Relationship between conductivity along the length of unfixed individual pili at pH 7 versus aromatic density (number of aromatic rings in PilA divided by the total number of amino acids in PilA).
