t offset amplitude phase pulseDuration cyclePeriod rampDuration offset 0.5 amplitude 1 cyclePeriod t phase cyclePeriod t phase cyclePeriod rampDuration 0.5 amplitude 1 cyclePeriod t phase cyclePeriod t phase cyclePeriod pulseDuration rampDuration 0.5 amplitude 1 cyclePeriod t phase cyclePeriod t phase cyclePeriod cyclePeriod rampDuration first transmembrane PROTEIN pr1 inside PROTEIN pr2 inside PROTEIN pr3 Vs K n K n Fn n Vm mRNA Km mRNA ks mRNA Vd Fc Kd Fc k1 Fc k2 Fn k1 Fc k2 Fn step1 stepFunction t offsetStep1 amplitudeStep1 phaseStep1 pulseDurationStep1 cyclePeriodStep1 rampDurationStep1 K 5 K 0.5 Kd 0.65 Kd 0.065 Km 2.5 Km 0.25 Vd 7 Vd 0.7 Vm 2.525 Vm 0.2525 Vs 8 Vs 0.8 k1 2.5 k1 0.25 k2 3 k2 0.3 ks 2.5 ks 0.25 n 20 n 0 t 72 5 5