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单词 menaquinone
释义

Definition of menaquinone in English:

menaquinone

noun ˌmɛnəˈkwɪnəʊn-ˈkwīˌnōn
mass nounBiochemistry
  • One of the K vitamins, a compound produced by bacteria in the large intestine and essential for the blood-clotting process. It is an isoprenoid derivative of menadione.

    Also called "vitamin K2"
    Example sentencesExamples
    • Mutant M249 preferentially accumulated menaquinone, which contains tetrahydrogeranylgeraniol as its side chain.
    • For example, menaquinone 7 could also be written as K [2.sub.35].
    • When administered, vitamin K 3 is alkylated to one of the vitamin K 2 forms of menaquinone.
    • The most common form of vitamin K in animals is menaquinone 4, produced by intestinal bacteria from exogenous naphthoquinones and transformed endogenously in our own cells.
    • The most common form of vitamin K2 in animals is menaquinone 4, produced by the processing of exogenous and bacterial naphthoquinones.

Origin

1940s: from the chemical name me(thyl)-na(phtho)quinone.

 
 

Definition of menaquinone in US English:

menaquinone

noun-ˈkwīˌnōn
Biochemistry
  • One of the K vitamins, a compound produced by bacteria in the large intestine and essential for the blood-clotting process. It is an isoprenoid derivative of menadione.

    Also called "vitamin K2" (see vitamin K)
    Example sentencesExamples
    • When administered, vitamin K 3 is alkylated to one of the vitamin K 2 forms of menaquinone.
    • For example, menaquinone 7 could also be written as K [2.sub.35].
    • The most common form of vitamin K2 in animals is menaquinone 4, produced by the processing of exogenous and bacterial naphthoquinones.
    • Mutant M249 preferentially accumulated menaquinone, which contains tetrahydrogeranylgeraniol as its side chain.
    • The most common form of vitamin K in animals is menaquinone 4, produced by intestinal bacteria from exogenous naphthoquinones and transformed endogenously in our own cells.

Origin

1940s: from the chemical name me(thyl)-na(phtho)quinone.

 
 
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更新时间:2024/12/23 18:16:46