import nsrunit;
unit conversion on;
unit s=1 second^1;
unit nM=1E-6 meter^(-3)*mole^1;

math main {
	//Warning:  the following variables were set 'extern' or given
	//  an initial value of '0' because the model would otherwise be
	//  underdetermined:  t, Ca
	extern real t s;
	extern real Ca nM;
	real M nM;
	M=6000;
	real Ntot nM;
	Ntot=1000;
	real K_mN nM;
	K_mN=535;
//	Var below replaced by constant in model eqns to satisfy unit correction
//	real n dimensionless;
//	n=2.92;
	real K_dN nM;
	K_dN=1760;
	real act_N dimensionless;
	real act_Napp dimensionless;
	real tau_actN s;
	tau_actN=0.070059;
	real tNinhib s;
	tNinhib=3600;

	// <component name="calcineurin">
	act_N=(Ca^2.92/(Ca^2.92+K_mN^2.92*(1+K_dN/M)));
	act_Napp=(if (t<tNinhib) act_N else if (t>=tNinhib) act_N*2.718281828459045^((-1)*(t-tNinhib)/tau_actN) else 0);
}