These variants may have been favored because they help compensate for a deficiency — associated with some agricultural diets — in an amino acid called ergothioneine. (sciencemag.org)
In the protein category, perhaps the most unique protein component in crimini is the sulfur - containing amino acid known as ergothioneine. (whfoods.org)
Ergothioneine not only provides us with antioxidant support, but with immune support as well, since it helps protect immune cells from oxidative damage. (whfoods.org)