menaquinone

The class name for a series of 2-methyl-3-all-trans-polyprenyl)-1,4-naphthoquinones (vitamins K2).

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men·a·quin·one .men-ə-'kwin-.ōn n VITAMIN K (1b) also a synthetic derivative of vitamin K2

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men·a·quin·one (men″ə-kwinґōn) any of a series of compounds in which the phytyl side chain of phytonadione (vitamin K1>) is replaced by a side chain of prenyl units and which have vitamin K activity. This form of the vitamin is usually available to the human body even in cases of dietary deficiency because menaquinones are synthesized by the intestinal flora. Called also vitamin K2>.

Medical dictionary. 2011.

Look at other dictionaries:

  • Ménaquinone — Structure générique des ménaquinones. La ménatétrénone (MK 4) correspond à n = 4. Général Nom IUPAC 2 méthyl 3 [(2Z,6E,10 …   Wikipédia en Français

  • ménaquinone — ● ménaquinone nom féminin Une des vitamines K ayant des propriétés antihémorragiques. ● ménaquinone (synonymes) nom féminin Une des vitamines K ayant des propriétés antihémorragiques. Synonymes : vitamine K2 …   Encyclopédie Universelle

  • menaquinone-7 — Menaquinone 6 with a 3 heptaprenyl side chain. SYN: vitamin K2(35) …   Medical dictionary

  • menaquinone — ► NOUN Biochemistry ▪ vitamin K, a compound produced by intestinal bacteria and essential for the blood clotting process. ORIGIN from its chemical name …   English terms dictionary

  • menaquinone — noun a) Any of a group of polycyclic aromatic ketones, based on 2 methyl 1,4 naphthoquinone. b) Vitamin K Syn: menatetrenone See Also: naphthoquinone, vitamin K …   Wiktionary

  • menaquinone-6 — Hexaprenylmenaquinone; prenylmenaquinone 6; isolated from putrified fish meal; potency is about 60% of that of phylloquinone (vitamin K1). SYN: farnoquinone, vitamin K2, vitamin K2(30) …   Medical dictionary

  • menaquinone — [ˌmɛnə kwɪnəʊn] noun Biochemistry a member of the vitamin K group, a compound produced by intestinal bacteria and essential for the blood clotting process. Origin 1940s: from the chemical name me(thyl) na(phtho)quinone …   English new terms dictionary

  • menaquinone — /mɛnəkwɪˈnoʊn/ (say menuhkwi nohn) noun the common inactive form of vitamin K found in mammalian liver; vitamin K2 {me(thyl) + na(phtha) + quinone} …   Australian English dictionary

  • menaquinone — n. one of the K vitamins, produced by bacteria found in the large intestine, essential for the blood clotting process. Also called vitamin K2. Etymology: chem. deriv. of methyl naphtho quinone …   Useful english dictionary

  • Vitamin K — has also been used as a slang term for ketamine, an unrelated anaesthetic. Vitamin K1 (phylloquinone). Both forms of the vitamin contain a functional naphthoquinone ring and an aliphatic side chain. Phylloquinone has a phytyl side chain …   Wikipedia

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