FIG. 2.

Phylogenetic tree of homologs of the deduced Tet(L) and Tet(M) proteins (A and B, respectively). Protein accession numbers are given in brackets. Trees were constructed by the neighbor-joining algorithm and clustered by the unweighted-pair group method using average linkages, and bootstrap values (100 replicates) are given at the branch points. The distances refer to the percentages of different residues. Abbreviations: E. faecium, Enterococcus faecium; B. cereus, Bacillus cereus; M. haemolytica, Mannheimia haemolytica; A. pleuropneumoniae, Actinobacillus pleuropneumoniae; C. difficile, Clostridium difficile; E. coli, Escherichia coli; N. meningitidis, Neisseria meningitidis.