begin name
somogyi2
end name

begin reactions
reaction0000001 {1.0}$EXTERNAL = {1.0}y
reaction0000002 {1.0}x = {1.0}y
reaction0000003 {1.0}y = {1.0}x
reaction0000004 {1.0}x = {1.0}y
reaction0000005 {1.0}y = {1.0}$EXTERNAL
end reactions

begin rate equations
reaction0000001 = Cytosol*gamma
reaction0000002 = Cytosol*k*(x[t] - y[t])
reaction0000003 = ER*k1*y[t]
reaction0000004 = alpha*Cytosol*fy*(x[t] - y[t])
reaction0000005 = beta*Extracellular*y[t]
end rate equations

begin parameters
a = 1.4
alpha = 10.0
beta = 1.0
gamma = 1.0
k = 0.01
k1 = 2.0
n = 4.0
Cytosol = 1.0
ER = 1.0
Extracellular = 1.0
end parameters

begin initial conditions
x[0] = xi
y[0] = yi
end initial conditions

begin initial values
xi = 1.0
yi = 1.0
end initial values

begin assignment rules
fy := y[t]^n/(a^n + y[t]^n)
end assignment rules

begin function definitions
end function definitions

begin events
end events

begin process annotations
end process annotations

begin species annotations
x http://identifiers.org/chebi/CHEBI:29108
x http://identifiers.org/kegg.compound/C00076
y http://identifiers.org/chebi/CHEBI:29108
y http://identifiers.org/kegg.compound/C00076
end species annotations

begin units
end units