Glutathione

The tripeptide (three amino acids) glutathione was isolated. This compound can easily switch between reduced and oxidized states and its properties make it important in tissue chemistry as it helps protect delicate compounds and facilitates the transfer of atomic groupings.
 Frederick Gowland Hopkins England 1921 Glutathione

The tripeptide (three amino acids) glutathione was isolated. This compound can easily switch between reduced and oxidized states and its properties make it important in tissue chemistry as it helps protect delicate compounds and facilitates the transfer of atomic groupings.