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Time course of tyrosinase-catalyzed oxidation of (A) 4-methylcatechol (MeCA), (B) MeCA with glutathione (GSH), (C) MeCA with 10 eq. Nα-acetyl-l-lysine (NAcLys), (D) MeCA with 10 eq. N-acetyl-l-histidine (NAcHis) or 10 eq. N-acetyl-l-leucine (NAcLeu), (E) MeCA with bovine serum albumin (BSA), and (F) MeCA with β-lactoglobulin (βLG). The inserted figures show the kinetic monitoring at indicated absorption wavelength (nm).
