noun Biochemistry.
- any of several isomers of a colorless, crystalline, water-soluble amino acid, CH3CH(NH2)COOH, found in many proteins and produced synthetically: used chiefly in biochemical research. Abbreviation: Ala; Symbol: A
noun
- a nonessential aliphatic amino acid that occurs in many proteins
n.
- A crystalline amino acid that is a constituent of many proteins.
- A nonessential amino acid. Chemical formula: C3H7NO2. See more at amino acid.