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(a) 2D panels represent the interactions between AG with cyclooxygenase 1 (COX-1) and (b) cyclooxygenase 2 (COX-2) binding sites. Positively charged residues are colored violet, negatively charged residues are colored red, polar residues are colored light blue, hydrophobic residues are colored green. Red-to-blue lines represent salt bridges and H-bonds (side chain) are reported as dotted pink arrows. Neutral histidine with hydrogen on the δ nitrogen is shown as HIE.
