Fig 9.
Inhibition of rCotEC chitinase activity. Trichoderma viridae chitinase (0.05 mg/ml) (A) or rCotEC (0.5 mg/ml) (B) was mixed with a 0 (-), 2 (△), 20 (▲), or 200 (●) mM concentration of the family 8 chitinase inhibitor pentoxifylline (P1784; Sigma) in PBS (pH 7.4), and chitinase activity was assessed as described in Materials and Methods.