Definition of methionine in English:

methionine

noun mɪˈθʌɪəniːnməˈθaɪəˌnin

mass nounBiochemistry

A sulphur-containing amino acid which is a constituent of most proteins and is essential to the diet of vertebrates.
〔生化〕甲硫氨酸，蛋氨酸
Chemical formula: CH₃S(CH₂)₂CH(NH₂)COOH
Example sentencesExamples
- They fix nitrogen and so contain high quality protein, including the essential amino acids methionine and cystine.
- For example, eggs are high in alanine and methionine; whey protein is high in tryptophan and threonine.
- Homocysteine is an intermediary metabolite of essential dietary amino acid methionine.
- The oxidation sites of alpha-crystallin are considered to be methionine, cysteine and tryptophan amino acid residues.
- Contents of glutamine, asparagine, methionine, and tryptophan in the tissues were not determined by this method.

Origin

1920s: from methyl + Greek theion 'sulphur'.

Definition of methionine in US English:

methionine

nounməˈθaɪəˌninməˈTHīəˌnēn

Biochemistry

A sulfur-containing amino acid that is a constituent of most proteins. It is an essential nutrient in the diet of vertebrates.
〔生化〕甲硫氨酸，蛋氨酸
Chemical formula: CH₃S(CH₂)₂CH(NH₂)COOH
Example sentencesExamples
- For example, eggs are high in alanine and methionine; whey protein is high in tryptophan and threonine.
- Contents of glutamine, asparagine, methionine, and tryptophan in the tissues were not determined by this method.
- The oxidation sites of alpha-crystallin are considered to be methionine, cysteine and tryptophan amino acid residues.
- They fix nitrogen and so contain high quality protein, including the essential amino acids methionine and cystine.
- Homocysteine is an intermediary metabolite of essential dietary amino acid methionine.

Origin

1920s: from methyl + Greek theion ‘sulfur’.

词汇	methionine
释义	Definition of methionine in English: methionine noun mɪˈθʌɪəniːnməˈθaɪəˌnin mass nounBiochemistry A sulphur-containing amino acid which is a constituent of most proteins and is essential to the diet of vertebrates. 〔生化〕甲硫氨酸，蛋氨酸 Chemical formula: CH₃S(CH₂)₂CH(NH₂)COOH Example sentencesExamples They fix nitrogen and so contain high quality protein, including the essential amino acids methionine and cystine. For example, eggs are high in alanine and methionine; whey protein is high in tryptophan and threonine. Homocysteine is an intermediary metabolite of essential dietary amino acid methionine. The oxidation sites of alpha-crystallin are considered to be methionine, cysteine and tryptophan amino acid residues. Contents of glutamine, asparagine, methionine, and tryptophan in the tissues were not determined by this method. Origin 1920s: from methyl + Greek theion 'sulphur'. Definition of methionine in US English: methionine nounməˈθaɪəˌninməˈTHīəˌnēn Biochemistry A sulfur-containing amino acid that is a constituent of most proteins. It is an essential nutrient in the diet of vertebrates. 〔生化〕甲硫氨酸，蛋氨酸 Chemical formula: CH₃S(CH₂)₂CH(NH₂)COOH Example sentencesExamples For example, eggs are high in alanine and methionine; whey protein is high in tryptophan and threonine. Contents of glutamine, asparagine, methionine, and tryptophan in the tissues were not determined by this method. The oxidation sites of alpha-crystallin are considered to be methionine, cysteine and tryptophan amino acid residues. They fix nitrogen and so contain high quality protein, including the essential amino acids methionine and cystine. Homocysteine is an intermediary metabolite of essential dietary amino acid methionine. Origin 1920s: from methyl + Greek theion ‘sulfur’.
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