R11660 chitin,hydrogen-donor:oxygen oxidoreductase (N-acetyl-beta-D-glucosaminyl C1-hydroxylating/C4-dehdrogenating); Chitin(n+m) + Reduced acceptor + Oxygen <=> [(1->4)-N-Acetyl-beta-D-glucosaminyl]n-(1->4)-N-acetyl-2-deoxy-2-amino-D-glucono-1,5-lactone + • • •