# Size of variable arrays: sizeAlgebraic = 0 sizeStates = 11 sizeConstants = 30 from math import * from numpy import * def createLegends(): legend_states = [""] * sizeStates legend_rates = [""] * sizeStates legend_algebraic = [""] * sizeAlgebraic legend_voi = "" legend_constants = [""] * sizeConstants legend_voi = "t in component environment (s)" legend_constants[0] = "kf5 in component RAF (per_um_s)" legend_constants[1] = "kb5 in component RAF (per_s)" legend_constants[2] = "km1 in component RAF (um)" legend_constants[3] = "km2 in component RAF (um)" legend_constants[4] = "km3 in component RAF (um)" legend_constants[5] = "km4 in component RAF (um)" legend_constants[6] = "Vmax1 in component RAF (per_s)" legend_constants[7] = "Vmax2 in component RAF (per_s)" legend_constants[8] = "Vmax3 in component RAF (per_s)" legend_constants[9] = "Vmax4 in component RAF (per_s)" legend_constants[10] = "PKC in component undefinedvariables (um)" legend_constants[11] = "PP2A in component RAF (um)" legend_states[0] = "MAPK_star in component MAPK (um)" legend_states[1] = "Raf in component RAF (um)" legend_states[2] = "Raf_star in component RAF (um)" legend_states[3] = "Raf_star_star in component RAF (um)" legend_states[4] = "GTPRas in component RAF (um)" legend_states[5] = "GTPRasRaf_star in component RAF (um)" legend_constants[12] = "km6 in component MAPKK (um)" legend_constants[13] = "km7 in component MAPKK (um)" legend_constants[14] = "km8 in component MAPKK (um)" legend_constants[15] = "km9 in component MAPKK (um)" legend_constants[16] = "Vmax6 in component MAPKK (per_s)" legend_constants[17] = "Vmax7 in component MAPKK (per_s)" legend_constants[18] = "Vmax8 in component MAPKK (per_s)" legend_constants[19] = "Vmax9 in component MAPKK (per_s)" legend_constants[20] = "PP2A in component MAPKK (um)" legend_states[6] = "MAPKK in component MAPKK (um)" legend_states[7] = "MAPKK_star in component MAPKK (um)" legend_states[8] = "MAPKK_star_star in component MAPKK (um)" legend_constants[21] = "km10 in component MAPK (um)" legend_constants[22] = "km11 in component MAPK (um)" legend_constants[23] = "km12 in component MAPK (um)" legend_constants[24] = "km13 in component MAPK (um)" legend_constants[25] = "Vmax10 in component MAPK (per_s)" legend_constants[26] = "Vmax11 in component MAPK (per_s)" legend_constants[27] = "Vmax12 in component MAPK (per_s)" legend_constants[28] = "Vmax13 in component MAPK (per_s)" legend_states[9] = "MAPK in component MAPK (um)" legend_states[10] = "MAPK_tyr in component MAPK (um)" legend_constants[29] = "MKP1 in component MAPK (um)" legend_rates[5] = "d/dt GTPRasRaf_star in component RAF (um)" legend_rates[4] = "d/dt GTPRas in component RAF (um)" legend_rates[1] = "d/dt Raf in component RAF (um)" legend_rates[2] = "d/dt Raf_star in component RAF (um)" legend_rates[3] = "d/dt Raf_star_star in component RAF (um)" legend_rates[6] = "d/dt MAPKK in component MAPKK (um)" legend_rates[7] = "d/dt MAPKK_star in component MAPKK (um)" legend_rates[8] = "d/dt MAPKK_star_star in component MAPKK (um)" legend_rates[9] = "d/dt MAPK in component MAPK (um)" legend_rates[10] = "d/dt MAPK_tyr in component MAPK (um)" legend_rates[0] = "d/dt MAPK_star in component MAPK (um)" return (legend_states, legend_algebraic, legend_voi, legend_constants) def initConsts(): constants = [0.0] * sizeConstants; states = [0.0] * sizeStates; constants[0] = 0.00004 constants[1] = 0.5 constants[2] = 66.666666667 constants[3] = 25.64166667 constants[4] = 15.6565 constants[5] = 15.6565 constants[6] = 4 constants[7] = 10 constants[8] = 6 constants[9] = 6 constants[10] = 0.1 constants[11] = 0.224 states[0] = 0 states[1] = 0.1 states[2] = 0 states[3] = 0 states[4] = 0.1 states[5] = 0 constants[12] = 0.159091667 constants[13] = 0.159091667 constants[14] = 15.6565 constants[15] = 15.6565 constants[16] = 0.105 constants[17] = 0.105 constants[18] = 6 constants[19] = 6 constants[20] = 0.224 states[6] = 0.18 states[7] = 0 states[8] = 0 constants[21] = 0.046296667 constants[22] = 0.046296667 constants[23] = 0.066666667 constants[24] = 0.066666667 constants[25] = 0.15 constants[26] = 0.15 constants[27] = 1 constants[28] = 1 states[9] = 0.36 states[10] = 0 constants[29] = 0.032 return (states, constants) def computeRates(voi, states, constants): rates = [0.0] * sizeStates; algebraic = [0.0] * sizeAlgebraic rates[5] = states[4]*states[2]*constants[0]-states[5]*constants[1] rates[4] = -states[4]*states[2]*constants[0]+states[5]*constants[1] rates[1] = (-constants[10]*states[1]*constants[6])/(constants[2]+states[1])+(states[2]*constants[11]*constants[8])/(constants[4]+states[2]) rates[2] = (((constants[10]*states[1]*constants[6])/(constants[2]+states[1])-(states[2]*constants[11]*constants[8])/(constants[4]+states[2]))-(states[2]*states[0]*constants[7])/(constants[3]+states[2]))+(states[3]*constants[11]*constants[9])/(constants[5]+states[3]) rates[3] = (states[2]*states[0]*constants[7])/(constants[3]+states[2])-(states[3]*constants[11]*constants[9])/(constants[5]+states[3]) rates[6] = (-states[6]*constants[16]*states[5])/(constants[12]+states[6])+(states[7]*constants[18]*constants[20])/(constants[14]+states[7]) rates[7] = (((states[6]*constants[16]*states[5])/(constants[12]+states[6])-(states[7]*constants[18]*constants[20])/(constants[14]+states[7]))-(states[7]*constants[17]*states[5])/(constants[13]+states[7]))+(states[8]*constants[19]*constants[20])/(constants[15]+states[8]) rates[8] = (states[7]*constants[17]*states[5])/(constants[13]+states[7])-(states[8]*constants[19]*constants[20])/(constants[15]+states[8]) rates[9] = (-states[9]*constants[25]*states[8])/(constants[21]+states[9])+(states[10]*constants[27]*constants[29])/(constants[23]+states[10]) rates[10] = (((states[9]*constants[25]*states[8])/(constants[21]+states[9])-(states[10]*constants[27]*constants[29])/(constants[23]+states[10]))-(states[10]*constants[26]*states[8])/(constants[22]+states[10]))+(states[0]*constants[28]*constants[29])/(constants[24]+states[0]) rates[0] = (states[10]*constants[26]*states[8])/(constants[22]+states[10])-(states[0]*constants[28]*constants[29])/(constants[24]+states[0]) return(rates) def computeAlgebraic(constants, states, voi): algebraic = array([[0.0] * len(voi)] * sizeAlgebraic) states = array(states) voi = array(voi) return algebraic def solve_model(): """Solve model with ODE solver""" from scipy.integrate import ode # Initialise constants and state variables (init_states, constants) = initConsts() # Set timespan to solve over voi = linspace(0, 10, 500) # Construct ODE object to solve r = ode(computeRates) r.set_integrator('vode', method='bdf', atol=1e-06, rtol=1e-06, max_step=1) r.set_initial_value(init_states, voi[0]) r.set_f_params(constants) # Solve model states = array([[0.0] * len(voi)] * sizeStates) states[:,0] = init_states for (i,t) in enumerate(voi[1:]): if r.successful(): r.integrate(t) states[:,i+1] = r.y else: break # Compute algebraic variables algebraic = computeAlgebraic(constants, states, voi) return (voi, states, algebraic) def plot_model(voi, states, algebraic): """Plot variables against variable of integration""" import pylab (legend_states, legend_algebraic, legend_voi, legend_constants) = createLegends() pylab.figure(1) pylab.plot(voi,vstack((states,algebraic)).T) pylab.xlabel(legend_voi) pylab.legend(legend_states + legend_algebraic, loc='best') pylab.show() if __name__ == "__main__": (voi, states, algebraic) = solve_model() plot_model(voi, states, algebraic)