Extended Data Fig. 5: OmcZ nanowires are robust electronic biomaterials that function under extreme environments.
From: Structure of Geobacter cytochrome OmcZ identifies mechanism of nanowire assembly and conductivity
Negative staining TEM images of OmcZ nanowires treated with following protein denaturants. a, No denaturant. b, 6 M urea, c, 5 M GuHCl, d, Phosphoric acid at low pH (pH = 1.6), and e, boiled in 2% SDS. All scale bars: 100 nm. f, OmcZ nanowires are more stable than OmcS at low pH (pH = 1.6) as evident by retention of its red colour due to hemes. OmcZ nanowires also retained their red colour characteristic of haems under all other denaturants. g, Solution CD spectra and h, UV-vis spectra show the stability of protein and electronic structure of OmcZ nanowires in denaturants.
