Other amino acids avoid water and are called hydrophobic, such as isoleucine, phenylalanine, and valine. The amino acid cysteine has a chemically reactive side chain that can form bonds with ...

This image illustrates the general structure of an amino acid.The central carbon atom (C ... The nine essential amino acids are histidine, isoleucine, leucine, lysine, methionine, phenylalanine, ...

While there are nine essential amino acids, leucine, isoleucine and valine are BCAAs because of their branched structures.