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单词 histidine
释义

Definition of histidine in English:

histidine

noun ˈhɪstɪdiːnˈhɪstəˌdin
mass nounBiochemistry
  • A basic amino acid which is a constituent of most proteins. It is an essential nutrient in the diet of vertebrates, and is the source from which histamine is derived in the body.

    〔生化〕组氨酸

    Chemical formula: C₆H₉N₃O₂

    Example sentencesExamples
    • Amino acids like histidine and glutamic acid that readily form complexes with chromium were also shown to increase absorption.
    • In humans, histamine is synthesized from histidine, a conditionally-essential amino acid.
    • The most prevalent amino acid is cysteine with other major ones including tyrosine, histidine, lysine and arginine.
    • The amount of the amino acids threonine, proline and histidine were also increased in roots of slag-cultivated maize plants.
    • Children also require two further amino acids, histidine and arginine.

Origin

Late 19th century: from Greek histos 'web, tissue' + -ide + -ine4.

Definition of histidine in US English:

histidine

nounˈhɪstəˌdinˈhistəˌdēn
Biochemistry
  • A basic amino acid which is a constituent of most proteins. It is an essential nutrient in the diet of vertebrates, and is the source from which histamine is derived in the body.

    〔生化〕组氨酸

    Chemical formula: C₆H₉N₃O₂

    Example sentencesExamples
    • The amount of the amino acids threonine, proline and histidine were also increased in roots of slag-cultivated maize plants.
    • In humans, histamine is synthesized from histidine, a conditionally-essential amino acid.
    • Amino acids like histidine and glutamic acid that readily form complexes with chromium were also shown to increase absorption.
    • Children also require two further amino acids, histidine and arginine.
    • The most prevalent amino acid is cysteine with other major ones including tyrosine, histidine, lysine and arginine.

Origin

Late 19th century: from Greek histos ‘web, tissue’ + -ide + -ine.

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更新时间:2025/6/18 11:31:57