某些海洋无脊椎动物中甲基萘醌-4（维生素K）及其氧化物的形成。
The formation of menaquinone-4 (vitamin K) and its oxide in some marine invertebrates.
作者信息
Burt V T, Bee E, Pennock J F
出版信息
Biochem J. 1977 Feb 15;162(2):297-302. doi: 10.1042/bj1620297.
Abstract
Three echinoderms, a crustacean, a mollusc and a coelenterate were injected with either [2-14C]mevalonate and unlabelled menadione (2-methyl-1,4-naphthaquinone) or 2-[14C]methyl-1,4-naphthaquinone. In each case the label was incorporated into menaquinone-4.[2-14C]Mevalonate was incorporated into menaquinone-4 in the crab (Carcinus maenas) only in the presence of menadione, the organism presumably being unable to synthesize the naphthaquinone nucleus. The starfish Asterias rubens and C. maenas incorporated the label into a compound which was identified chromatographically as 2,3-epoxymenaquinone-4. The significance of menaquinone-4 and these animals is discussed.
摘要
给三种棘皮动物、一种甲壳类动物、一种软体动物和一种腔肠动物注射了[2-¹⁴C]甲羟戊酸和未标记的甲萘醌（2-甲基-1,4-萘醌）或2-[¹⁴C]甲基-1,4-萘醌。在每种情况下，标记物都被整合到维生素K₄中。仅在甲萘醌存在的情况下，[2-¹⁴C]甲羟戊酸才在螃蟹（Carcinus maenas）中被整合到维生素K₄中，该生物体可能无法合成萘醌核。海星Asterias rubens和Carcinus maenas将标记物整合到一种经色谱鉴定为2,3-环氧维生素K₄的化合物中。讨论了维生素K₄和这些动物的意义。
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