The carotenoids of Flavobacterium strain R1560 |
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Authors: | George Britton David J Brown Trevor W Goodwin Franz J Leuenberger Arno J Schocher |
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Institution: | (1) Department of Biochemistry, University of Liverpool, P.O. Box 147, L69 3BX Liverpool, England;(2) Present address: Research Department, The Boots Company Ltd., NG2 3AA Nottingham, England;(3) F. Hoffmann-La roche and Co. Ltd., CH-4002 Basel, Switzerland |
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Abstract: | The main carotenoid of Flavobacterium strain R1560 has been identified as (3R,3R)-zeaxanthin. Also present were small amounts of 15-cis-phytoene, phytofluene, -carotene (7,8,7,8-tetrahydro-, -carotene plus 7,8,11,12-tetrahydro-, -carotene), neurosporene, lycopene, -zeacarotene, -carotene, -carotene, -cryptoxanthin, rubixanthin, 3-hydroxy--zeacarotene and several apo-carotenals. Zeaxanthin production was inhibited by nicotine (10 mM), and lycopene and rubixanthin accumulated. The biosynthesis of zeaxanthin is discussed in terms of pathways and also of half-molecule reaction sequences. The presence of zeaxanthin may be a characteristic of a group of Flavobacterium species, and may thus be useful in the taxonomic classification of these organisms. |
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Keywords: | Flavobacterium R1560 Carotenoids Zeaxanthin cts-Phytoene Carotenes Biosynthesis Nicotine Taxonomy |
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