numerous inflammatory disorders. Development of smallmoleculeinhibitors for TLR9 remains largely empirical due to lack of structural understanding of potential TLR9 antagonism by smallmolecules and due to the unusual topology of the ligand binding surface of the receptor. To develop a structural model for rational design of smallmolecule TLR9 antagonists, an enhanced homology model of human TLR9 (hTLR9)