Both of these amino acids are non-polar and aliphatic and have a four-carbon side chain emerging from the basic amino acid structure. The skeletal structure of leucine is shown below. The skeletal ...

Lysine is a vital amino acid and plays an important part in biological processes in the Human body. A basic, charged (at physiological pH), an aliphatic amino acid containing an α-amino group ...

Tryptophan is one of 20 amino acids essential for forming key proteins needed for life. Astronomers have discovered high amounts of the amino acid tryptophan in interstellar material throughout a ...