A SIMPLE TWO-STEP KINETIC SCHEME Andrea Bellelli UNIVERSITA' DI ROMA SAPIENZA FACOLTA' DI FARMACIA E MEDICINA       This program uses a predictor-corrector numerical integration routine to simulate the simplest and most common two-step reaction scheme: P + X <=> PX -> PX*, applicable, for example, to many irreversible enzyme inhibitors. Simulation parameters Rate constant for P + X → PX 0.7 1.2 1.7 2.5 Rate constant for PX → P + X 0.2 0.4 0.7 1.3 Rate constant for PX → PX* 0.2 0.4 0.7 1.3