The thermodynamic and spectroscopic properties of the membrane bound iron-sulphur centers and cytochromes in phototrophically grown cells of the thermophilic facultative photosynthetic green bacterium Chloroftexus aurantiacus have been examined. The present study shows that Chloroflexus contains several cytochromes of b and c type, along with multiple ferredoxin-like centers with resonances centered at g = 1.93, g = 2.017 (HiPIP-like center) and g = 1.90 (Rieske-type protein). The g = 1.90 centre appears to be actively involved in photooxidative reactions. These observations suggest the presence of a previously undetected cytochrome b c1 complex in this bacterium. © 1985.
Zannoni, D., & Ingledew, W. J. (1985). A thermodynamic analysis of the plasma membrane electron transport components in photoheterotrophically grown cells of Chloroflexus aurantiacus. An optical and electron paramagnetic resonance study. FEBS Letters, 193(1), 93–98. https://doi.org/10.1016/0014-5793(85)80086-7