Tryptophan structure Tryptophan was discovered in the early 1900s after it was isolated from casein, a protein found in milk. Its molecular structures were determined a few years later.

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 ...

L-tryptophan is an essential amino acid that helps the body make proteins and certain brain-signaling chemicals. Your body changes L-tryptophan into a brain chemical called serotonin. Serotonin ...

This late-stage diversification technique allows them to fine-tune peptides even after the core structure is established ... of functional groups onto the tryptophan (Trp) residues within the ...

Foods rich in tryptophan may boost the production of serotonin in the brain. These foods include eggs, some cheeses, and turkey. Serotonin is a natural neurotransmitter (brain messenger ...

The legend of tryptophan in turkey having the power to make people sleepy has become almost as famous as the bird's white and dark meat. But does Thanksgiving turkey actually induce drowsiness?