Multiple sequence alignment of TetX2 from Bacteroides thetaiotaomicron (TetX2), p-hydroxybenzoate hydroxylase (PHBH) from Pseudomonas fluorescence, phzS from Pseudomonas aeruginosa (PHZS), and salicylate hydroxylase (SAL) from Pseudomonas putida shows that TetX2 shares conserved sequence motifs, GXGXXG, DG, modified GD, with other FAD-monooxygenases. Sequence were aligned with program CLASTALW and represented by BOXSHADE 19.