Phenylalanine is an essential amino acid (building block of protein ... These support your mood, motivation, attention, cognitive function, and metabolism. They also protect your skin and eyes ...

For example, the amino acid phenylalanine (Phe ... or carry out one of many other important cellular support functions.

Other amino acids avoid water and are called hydrophobic, such as isoleucine, phenylalanine ... three-dimensional shape and perform biological functions.

They play a crucial role in the structure, function, and regulation of the ... The nine essential amino acids are histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, ...