Demonstration of two 3,3'-diaminobenzidine oxidation reactions associated with photosynthetic membranes in anaerobic light-grown Rhodospirillum rubrum.
Photosynthetic membranes of anaerobic light-grown Rhodospirillum rubrum oxidized 3,3'-diaminobenzidine. When glutaraldehyde-treated cells were exposed to 3,3'-diaminobenzidine in the light aerobically, the oxidation appeared to occur by two systems. One reaction was stimulated by white light and the second required molecular oxygen. The O2-dependent activity was inhibited by KCN.
D015100:3,3'-Diaminobenzidine; D001436:Bacteriorhodopsins / Q000378:metabolism; D001560:Benzidines; D002338:Carotenoids / Q000378:metabolism; D003486:Cyanides / Q000494:pharmacology; D003624:Darkness; D008027:Light; D008854:Microscopy, Electron; D010084:Oxidation-Reduction; D012247:Rhodospirillum rubrum / Q000032:analysis* / Q000648:ultrastructure
D001560:Benzidines; D003486:Cyanides; D015100:3,3'-Diaminobenzidine; D002338:Carotenoids; D001436:Bacteriorhodopsins