Phenylalanine

 Phenylalanine (also known as Phe or F) is a non-polar aromatic α-amino acid, with the formula C₆H₅CH₂CH(NH₂)COOH. There are three types of phenylalanine, D-phenylalanine, L-phenylalanine and DL-phenylalanine. Phenylalanine contains a benzyl side chain, giving it a hydrophobic nature that gives it the classification of non-polar.

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