The major part of polar carotenoids of the aerobic bacteria Roseococcus thiosulfatophilus RB3 and Erythromicrobium ramosum E5 is not bound to the bacteriochlorophyll a-complexes of the photosynthetic apparatus

The obligate aerobic bacteria Roseococcus thiosulfatophilus RB3 and Erythromicrobium ramosum E5 contain numerous polar carotenoids. The major carotenoid of the strain RB3 was the C sub(30) carotene-dioate (4,4'-diapocarotene-4,4'-dioate) and the respective diglycosyl ester which have never...

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Bibliographic Details
Published in:Archives of microbiology 1993-11, Vol.160 (5), p.372-376
Main Authors: YURKOV, V, GAD'ON, N, DREWS, G
Format: Article
Language:English
Subjects:
Bacteriology
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Microbiology
Morphology, structure, chemical composition
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Summary:The obligate aerobic bacteria Roseococcus thiosulfatophilus RB3 and Erythromicrobium ramosum E5 contain numerous polar carotenoids. The major carotenoid of the strain RB3 was the C sub(30) carotene-dioate (4,4'-diapocarotene-4,4'-dioate) and the respective diglycosyl ester which have never been isolated before from a bacteriochlorophyll containing bacterium. Strain E5 contains the very polar erythroxanthin sulphate. The major carotenoid bound to reaction center and light-harvesting complexes is bacteriorubixanthinal. Most of the carotenoids of both strains are not bound to the pigment-protein complexes of the photosynthetic apparatus but to the envelope fraction (cytoplasmic membrane and cell wall).
ISSN:0302-8933
1432-072X
DOI:10.1007/BF00252223