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Definition of an Amino Acid

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This is the general structure of an amino acid.

This is the general structure of an amino acid. This also shows the ionization of an amino acid at pH = 7.4.

Todd Helmenstine

Definition: An amino acid is a type of organic acid that contains an acid functional group and an amine functional group on adjacent carbon atoms. Amino acids are considered to be the building blocks of proteins.

Common Misspellings: ammino acid

Examples: lysine, glycine, tryptophan

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