// Created by libAntimony v2.8.0
model *MODEL1212180000()

  // Compartments and Species:
  compartment compartment_;
  species $IPTG in compartment_, sigb in compartment_, lacz in compartment_;
  species x in compartment_;

  // Reactions:
  v1: $IPTG -> sigb; IPTG*kbs - kbd*sigb;
  v2: sigb -> lacz; -(kzd*lacz) + (kzs*sigb)/(1 + x);
  v3: sigb -> x; -(kxd*x) + (kxs*sigb)/(1 + x);

  // Species initializations:
  IPTG = 100;
  sigb = 0;
  lacz = 0;
  x = 0;

  // Compartment initializations:
  compartment_ = 1;

  // Variable initializations:
  kbd = 0.044;
  kbs = 100;
  kxd = 9;
  kxs = 0.76;
  kzd = 0.041;
  kzs = 0.0004;

  // Other declarations:
  const compartment_, kbd, kbs, kxd, kxs, kzd, kzs;
end