RRC ID 20859
Author Takaichi S, Maoka T, Mochimaru M.
Title Unique carotenoids in the terrestrial cyanobacterium Nostoc commune NIES-24: 2-hydroxymyxol 2'-fucoside, nostoxanthin and canthaxanthin.
Journal Curr. Microbiol.
Abstract Cyanobacteria produce some carotenoids. We identified the molecular structures, including the stereochemistry, of all the carotenoids in the terrestrial cyanobacterium, Nostoc commune NIES-24 (IAM M-13). The major carotenoid was beta-carotene. Its hydroxyl derivatives were (3R)-beta-cryptoxanthin, (3R,3'R)-zeaxanthin, (2R,3R,3'R)-caloxanthin, and (2R,3R,2'R,3'R)-nostoxanthin, and its keto derivatives were echinenone and canthaxanthin. The unique myxol glycosides were (3R,2'S)-myxol 2'-fucoside and (2R,3R,2'S)-2-hydroxymyxol 2'-fucoside. This is only the second species found to contain 2-hydroxymyxol. We propose possible carotenogenesis pathways based on our identification of the carotenoids: the hydroxyl pathway produced nostoxanthin via zeaxanthin from beta-carotene, the keto pathway produced canthaxanthin from beta-carotene, and the myxol pathway produced 2-hydroxymyxol 2'-fucoside via myxol 2'-fucoside. This cyanobacterium was found to contain many kinds of carotenoids and also displayed many carotenogenesis pathways, while other cyanobacteria lack some carotenoids and a part of carotenogenesis pathways compared with this cyanobacterium.
Volume 59(4)
Pages 413-9
Published 2009-10
DOI 10.1007/s00284-009-9453-4
PMID 19669835
MeSH Biosynthetic Pathways Canthaxanthin / analysis* Chromatography, High Pressure Liquid Fucose / analogs & derivatives* Fucose / analysis Molecular Structure Nostoc commune / chemistry* Nostoc commune / metabolism Spectrum Analysis Xanthophylls / analysis*
IF 1.595
Times Cited 9
Algae NIES-24