Definition

1. Noun:
   • An essential amino acid found in proteins: Lysine is one of the nine essential amino acids that the human body cannot synthesize and must obtain from the diet. It is a fundamental building block for proteins and is crucial for various bodily functions, including growth, tissue repair, and the production of enzymes, hormones, and antibodies.

Examples of Usage

• Noun:
  • Lysine is abundant in foods like meat, eggs, and soybeans.
  • A deficiency in lysine can impair growth and immune function.
  • The nutritional supplement is fortified with lysine.

Advanced Usage

• "Lysine residue": Refers to a single molecule of lysine within a protein chain.
  • The modification occurs at a specific lysine residue in the enzyme.
• "Lysine supplementation": The act of adding lysine to the diet, often for health purposes.
  • Lysine supplementation is sometimes used to manage herpes simplex outbreaks.

Variants and Related Words

• L-Lysine (n): The biologically active form of lysine found in proteins and used in supplements.
  • Most dietary supplements contain L-lysine.
• Lysyl (adj): A prefix or combining form relating to lysine, often used in biochemistry (e.g., lysyl group).
  • The reaction involves the lysyl side chain.

Synonyms

• Essential amino acid: A category to which lysine belongs.
• Proteinogenic amino acid: An amino acid used by cells to build proteins.

Related Phrases

(Note: As a specific biochemical compound, "lysine" does not have phrasal verbs in the conventional sense.)

Related Idioms

(Note: There are no common idioms using the word "lysine" due to its technical nature.)

Noun

1. an essential amino acid found in proteins; occurs especially in gelatin and casein