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. 1998 Sep;42(9):2215–2220. doi: 10.1128/aac.42.9.2215

FIG. 4.

FIG. 4

Phylogenetic relationship among d-Ala-d-Ala ligase homologs as calculated by the CLUSTAL W method (39). The tree was generated with the PHYLIP program Drawtree (19). The four major branches of the tree are labeled A, B, C, and D.