Compound as reactive (1)

dopaquinone + 5-S-cysteinyldopa → 5-S-cysteinyldopaquinone + L-dopa

Compound as product (1)

dopaquinone + L-cysteine → 5-S-cysteinyldopa

Reversible reaction (1)

5-S-cysteinyldopa ↔ H₂O + 1,4-benzothiazinyl-alanine + H⁺