[organic acid containing one or more amino groups, especially any of a group that make up proteins and are important to living cells; those that are nonessential can be synthesized by the body while essential acids must be obtained through the diet; there are also several important amino acids, such as the neurotransmitter g-aminobutyric acid, that have no relation to proteins. ( CSP )]
UMLS (NCI) C0002520 - Amino Acid, Peptide, or Protein
- Pharmacologic Substance
- Biologically Active Substance