Adelberg, Edward A. Department of Genetics, Yale University, New Haven, Connecticut.
Magee, Paul T. Department of Microbiology, School of Medicine, Yale University, New Haven, Connecticut.
Last reviewed:January 2019
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- Occurrence of conjugated amino acids
- Occurrence of free amino acids
- General properties
- Formation and transfer of amino groups
- Amino acids in nutrition
- Links to Primary Literature
- Additional Readings
Any of the organic compounds possessing one or more basic amino groups and one or more acidic carboxyl groups. Of the more than 80 amino acids that have been found in living organisms, approximately 20 serve as the building blocks for proteins. These 20 amino acids are typically divided into essential (indispensable) and nonessential (dispensable) groups, which can vary for different organisms (the essential and nonessential amino acids for humans are listed in the table). In addition, a number of nonessential amino acids can be considered as essential under certain conditions. See also: Amino acid metabolism; Protein
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