amino acidamino acid
- any of a large group of organic acids containing a carboxyl group, COOH, and an amino group, NH
- any of the amino acids, usually about 20, that link together into polypeptide chains to form proteins that are necessary for all life: in general, they are water-soluble, crystalline, amphoteric electrolytes having mirror-image isomeric forms with right and left optical activity: ten of these (essential amino acids) cannot be synthesized by the human body and must be consumed
An organic compound containing an amino group (NH2), a carboxylic acid group (COOH), and any of various side groups, especially any of the twenty compounds that have the basic formula NH2CHRCOOH, and that link together by peptide bonds to form proteins or that function as chemical messengers and as intermediates in metabolism.
(plural amino acids)
- (organic chemistry) Any organic compound containing both an amino and a carboxylic acid functional group.
- (biochemistry) Any of the twenty naturally occurring α-amino acids (having the amino, and carboxylic acid groups on the same carbon atom), and a variety of side chains, that combine, via peptide bonds, to form proteins.
- imino acid