Sulfide quinone reductase (SQR) activity in Chlorobium

FEBS Letters

Padan, E.²  Hauska, G.¹  Shahak, Y.³  Arieli, B.² 

[1]Institut für Zellbiologie und Pflanzenphysiologie, Universität Regensburg, 8400 Regensburg, Germany

[2]Division of Microbial and Molecular Ecology, Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel

[3]Biochemistry Department, The Weizmann Institute of Science, Rehovot 76100, Israel

关键词: Sulfide oxidation;    Quinone reductions;    Electron transport;    Photosynthesis;    Chlorobium limicola;    SQR;    sulfide-quinone reductase;    MQ;    menaquinone;    PQ-1(-2);    plastoquinone-1(-2);    UQ-1(-2);    ubiquinone-1(-2);    NQNO;    2-n-nonyl-4-hydroxyquinoline-N-oxide;    UHDBT;    5-n-undecyl-6-hydroxy-4;    7-dioxobenzothiazole;    DNP-INT;    2-iodo-6-isopropyl-3-methyl-2′-4;    4′-trinitrodiphenyl ether;    DCMU;    3-(3′;    4′-dichlorophenyl)-1;    1-dimethylurea;    Bchl c;    bacteriochlorophyll c;   

DOI  :  10.1016/0014-5793(92)80230-E

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

Membranes of the green sulfur bacterium, Chlorobium limicola f, thiosulfatophilum, catalyze the reduction of externally added isoprenoid quinones by sulfide. This activity is highly sensitive to stigmatellin and aurachins. It is also inhibited by 2-n-nonyl-4-hydroxyquinoline-N-oxide, antimycin, myxothiazol and cyanide. It is concluded that in sulfide oxidizing bacteria like Chlorobium, sulfide oxidation involves a sulfide-quinone reductase (SQR) similar to the one found in Oscilatoria limnetica [Arieli, B., Padan, E. and Shahak, Y. (1991) J. Biol. Chem. 266. 104–111].

【 授权许可】

Unknown