FIG. 1.

Alignment of 42 members of the TetR family that exemplify the TetR family profile. The blue column indicates α-helix residues involved in DNA contacts in the crystal structure of TetR and QacR. The yellow column indicates turns. The most conserved residues are shaded. Abbreviations are as follows: BACME, Bacillus megaterium; BACSU, Bacillus subtilis; ECOLI, Escherichia coli; HAEIN, Haemophilus influenzae; LACLA, Lactobacillus lactis; MYCTU, Mycobacterium tuberculosis; RHIME, Rhizobium meliloti; STRGA, Streptomyces sp.; VIBHA, Vibrio haemophilus; XANAU, Xanthomonas sp.