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BLAST alignments of amino acid sequences of eight Tet(X3) variants, constructed using ClustalW version 2.1 and ESPript version 3.0 (https://www.genome.jp/tools-bin/clustalw and http://espript.ibcp.fr/ESPript/cgi-bin/ESPript.cgi). The percentages represent the amino acid identity of the novel Tet(X3) variants to the previously reported Tet(X3). The structure found under PDB accession number 4A6N served as the reference for secondary structure depiction.
