HiPIP oxido‐reductase activity in membranes from aerobically grown cells of the facultative phototroph Rhodoferax fermentans

FEBS Letters

Hochkoeppler, Alejandro²  Zannoni, Davide²  Kofod, Pauli¹ 

[1] Chemistry Department, Agricultural University, Thorvadsensvej 40, DK-1871 FC, Copenhagen, Denmark;Department of Biology, University of Bologna, 42 Irnerio, 40126 Bologna, Italy

关键词: HiPIP;    Electron transfer;    Bacterial respiration;    Facultative phototrophs;    Rhodoferax fermentans;   

DOI  :  10.1016/0014-5793(95)01188-K

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

The role of the periplasmically located, water-soluble, HiPIP (high-potential iron-sulfur protein) in the respiratory chain of the facultative phototroph Rhodoferax fermentans has been examined. The oxidized HiPIP is reduced by succinate-dependent respiration via the bc ₁ complex, this reaction being inhibited by myxothiazol and/or stigmatellin. The reduced HiPIP can be oxidized by the membrane-bound cytochrome oxidase, this reaction being inhibited by 0.1 mM cyanide. We conclude that aerobically grown Rf. fermentans contains a redox chain in which HiPIP mediates electron transfer between the bc ₁ complex and the cb-type cytochrome oxidase.

【 授权许可】

Unknown