A thermodynamic analysis of the plasma membrane electron transport components in photoheterotrophically grown cells of Chloroflexus aurantiacus

FEBS Letters

Zannoni, Davide²  Ingledew, W.John¹ 

[1] Department of Biochemistry and Microbiology, St. Andrews University, St. Andrews, Fife, Scotland;Institute of Botany, University of Bologna, 42 Irnerio, 1-40126 Bologna, Italy

关键词: Cytochrome;    b Cytochrome;    c Iron-sulfur center;    Potentiometry;    Electron transport;    Thermophilic bacterium;    (Chloroflexus aurantiacus);   

DOI  :  10.1016/0014-5793(85)80086-7

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

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 complex in this bacterium.

【 授权许可】

Unknown