f_A3 (1+(re.c_A3/Ki)^n)^-1 ""
v3_denom (kGAPDHm*re.c_N2+kPGKp*(A-re.c_A3)) ""
k3fwd kGAPDHp*kPGKp/v3_denom ""
k3rev kGAPDHm*kPGKm/v3_denom ""