One-electron oxidation of six different c-type lysozymes from hen egg white, turkey egg white, human milk, horse milk, camel stomach and tortoise was studied by gamma-and the first step, one tryptophan side chain is oxidized to indolyl free radical, which is produced shown already, the indolyl radical subse-quently oxidizes a tyrosine side chain to the phenoxy radical in an intramolecular this reaction is not total and its stoichiometry depends on the constants also vary between proteins, from 120Æs )1 to 1000Æs )1 at pH and room temperature [extremes are hen and turkey egg white (120Æs )1 ) and human milk (1000Æs )1 )]
