Definition of methionine in English:

Share this entry

methionine

Pronunciation: /məˈTHīəˌnēn/

noun

Biochemistry
A sulfur-containing amino acid that is a constituent of most proteins. It is an essential nutrient in the diet of vertebrates.
Example sentences
  • They fix nitrogen and so contain high quality protein, including the essential amino acids methionine and cystine.
  • The oxidation sites of alpha-crystallin are considered to be methionine, cysteine and tryptophan amino acid residues.
  • For example, eggs are high in alanine and methionine; whey protein is high in tryptophan and threonine.

Origin

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

Share this entry
 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.