FIG. 1.

Immunoblot with antisera to α₁PI in which gel samples were comprised of 10 μg of α₁PI alone (lane 1); α₁PI which had been incubated with trypsin for 30 min at 37°C (lane 2); or α₁PI and 200 μg of trypsin along with 6 mM NADH and pyocyanin at a concentration of 12.5 μM (lane 3), 50 μM (lane 4), and 100 μM (lane 5). The arrow designates the location of the complex formed by α₁PI and trypsin. The results are representative of 10 experiments.