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词汇 tryptophan
释义

Definition of tryptophan in English:

tryptophan

noun ˈtrɪptəfanˈtrɪptəˌfæn
mass nounBiochemistry
  • An amino acid which is a constituent of most proteins. It is an essential nutrient in the diet of vertebrates.

    〔生化〕色氨酸

    An indole derivative; chemical formula: C₈H₆NCH₂CH(NH₂)COOH

    Example sentencesExamples
    • Peptides are named by the position of tryptophan in the amino acid sequence.
    • For example, eggs are high in alanine and methionine; whey protein is high in tryptophan and threonine.
    • Negative dietary changes are related to the deficiency of maize in the amino acids tryptophan and lysine.
    • Key essential amino acids are valine, leucine, isoleucine, tryptophan and methionine.
    • Two known enzymes catabolize the essential amino acid tryptophan in mammals.

Origin

Late 19th century: from tryptic 'relating to trypsin' + Greek phainein 'appear'.

Definition of tryptophan in US English:

tryptophan

nounˈtriptəˌfanˈtrɪptəˌfæn
Biochemistry
  • An amino acid which is a constituent of most proteins. It is an essential nutrient in the diet of vertebrates.

    〔生化〕色氨酸

    An indole derivative; chemical formula: C₈H₆NCH₂CH(NH₂)COOH

    Example sentencesExamples
    • Negative dietary changes are related to the deficiency of maize in the amino acids tryptophan and lysine.
    • Peptides are named by the position of tryptophan in the amino acid sequence.
    • For example, eggs are high in alanine and methionine; whey protein is high in tryptophan and threonine.
    • Two known enzymes catabolize the essential amino acid tryptophan in mammals.
    • Key essential amino acids are valine, leucine, isoleucine, tryptophan and methionine.

Origin

Late 19th century: from tryptic ‘relating to trypsin’ + Greek phainein ‘appear’.

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