obsolete 4-carboxy-4'-sulfoazobenzene reductase activity (obsolete GO:0018544)
OBSOLETE. Catalysis of the reaction: 4-carboxy-4'-sulfoazobenzene + 4 H+ + 4 e- = 4-aminobenzoate + 4-aminobenzenesulfonate.
4-carboxy-4'-sulphoazobenzene reductase activity
exact