FIGURE 2.

Activity of EfP-I on a secondary substrate. EfP-I was first reacted with one substrate and then with another, followed by measurement of absorbance at 405 nm at 25 °C, CU first, CTH second (A); CTH first, CU second (B); CU first, CCH second (C); CCH first, CU second (D); CTH first, CCH second (E); CCH first, CTH second (F); CTH first, CTH second as a control (G); CU first, CU second as a control (H); and CCH first, CCH second as a control (I).