The development of chemical reactions that can distinguish between the 20 common amino acids with high specificity offers the potential to decipher the sequence, structure and function of proteins.

As people grow older, the same brain chemistry that once supported sharp thinking and stable mood can quietly start to work ...

Tryptophan is an essential amino acid used to make proteins. Your body does not make it, so you need to get it from your diet. Foods that contain tryptophan include animal products like chicken and ...

Tryptophan is an amino acid. Amino acids are molecules that your body uses to make proteins, which help you to: Tryptophan plays a part in many aspects of your health. For instance, it helps keep your ...