Figure 4

Ligand–target interactions for compounds forming hydrogen bonds with catalytic triad residues of prostaglandin-endoperoxide synthase 2. (a) Compounds forming hydrogen bonds with three catalytic triad residues. (b) Compounds forming hydrogen bonds with two catalytic triad residues. (c) Structure of inhibitor of prostaglandin-endoperoxide synthase 2, salicylate (aspirin). DA108 tetradecanoic acid, DA114 10-undecenal, DA164 trans,trans-2,4-hexadienyl acetate, DA175 5-acetoxymethylfurfural, DB019 senkyunolide F, DC012 azelaic acid, ZF04 tyrosine.