PTGS2 and atrial fibrillation: For the same, amino acid sequence length from 511 to 520 of AF-COX-2 (i.e. Val511, Gly512, Ala513, Pro514, Phe515, Ser516, Leu517, Lys518, Gly519, and Leu520) was selected as a peptide for forming the adducts with the compounds.