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Methionine

Synonym(s)

  • L-methionine
  • Met
  • methionine (substance)
  • (S)-2-amino-4-(methyl-sulfanyl)butanoic acid

Definition(s)

A sulfur containing essential amino acid that is important in many body functions. It is a chelating agent for heavy metals.

Definition from: MSH via Unified Medical Language SystemThis link leads to a site outside Genetics Home Reference. at the National Library of Medicine

Amino acid with side chain -CH2CH2SCH3.

Definition from: NCI via Unified Medical Language SystemThis link leads to a site outside Genetics Home Reference. at the National Library of Medicine

One of nine essential amino acids in humans (provided by food), methionine is required for growth and tissue repair. A sulphur-containing amino acid, methionine improves the tone and pliability of skin, hair, and strengthens nails. Involved in many detoxifying processes, sulphur provided by methionine protects cells from pollutants, slows cell aging, and is essential for absorption and bio-availability of selenium and zinc. Methionine chelates heavy metals, such as lead and mercury, aiding their excretion. It also acts as a lipotropic agent and prevents excess fat buildup in the liver.

Definition from: NCI via Unified Medical Language SystemThis link leads to a site outside Genetics Home Reference. at the National Library of Medicine

See also Understanding Medical Terminology.

 
Published: December 16, 2014