Archives of Microbiology

, Volume 160, Issue 5, pp 372–376

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

  • Vladimir Yurkov
  • Nasser Gad'on
  • Gerhart Drews
Original Papers

DOI: 10.1007/BF00252223

Cite this article as:
Yurkov, V., Gad'on, N. & Drews, G. Arch. Microbiol. (1993) 160: 372. doi:10.1007/BF00252223

Abstract

The obligate aerobic bacteria Roseococcus thiosulfatophilus RB3 and Erythromicrobium ramosum E5 contain numerous polar carotenoids. The major carotenoid of the strain RB3 was the C30 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).

Key words

Aerobic photosynthetic bacteria Carotenoids Carotene-dioate diglucosyl ester Erythroxanthin sulphate 

Abbreviations

Bchl

bacteriochlorophyll

MeOH

methanol

Copyright information

© Springer Verlag 1993

Authors and Affiliations

  • Vladimir Yurkov
    • 1
  • Nasser Gad'on
    • 1
  • Gerhart Drews
    • 1
  1. 1.Institut für Biologie 2, MikrobiologieAlbert-Ludwigs-UniversitätFreiburgGermany

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