title: Unique carotenoid lactoside, P457, in Symbiodinium sp. of dinoflagellate.
abstract: The dinoflagellates are a large group of unicellular alge in marine and fresh water. Some are an endosymbiont of marine animals. Photosynthetic dinoflagellates have peridinin, a light-harvesting carotenoid. In addition, a unique carotenoid, P457, was found from Amphinidium. The presence of P457 in Symbiodinium derived from marine animals has not been reported. We reconfirmed the molecular structure of P457, a neoxanthin-like carotenoid with an aldehyde group and a lactoside, from Symbiodinium sp. NBRC 104787 isolated from a sea anemone. In addition, we investigated the distribution of P457 and peridinin in various Symbiodinium and scleractinian coral species, and possible biosynthetic pathways of these carotenoids are proposed.
authors.affiliation: Course in Environmental Molecular Biology and Microbial Ecology, Graduate School of Environmental Science, Hokkaido University, Sapporo, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Wakahama
authors.forename: Hidetoshi
authors.initials: H
authors.lastname: Okuyama
authors.forename: Takashi
authors.initials: T
authors.lastname: Maoka
authors.forename: Shinichi
authors.initials: S
authors.lastname: Takaichi
mesh_terms: D002338:Carotenoids / Q000737:chemistry*; D004141:Dinoflagellida / Q000737:chemistry*; D007785:Lactose / Q000031:analogs & derivatives* / Q000737:chemistry; D015394:Molecular Structure
chemical_list: C098372:P457 carotenoid; D002338:Carotenoids; D007785:Lactose