Figure 2.

Summarized maximum likelihood topology of the EI sequences used in this study. The complete tree is shown in Fig. S2, Additional file 2. Support values for the bootstrap analysis by maximum likelihood (BS) and for Bayesian posterior probabilities (BPP) are given for those nodes with BS > 50% or BPP = 1.00. The main groups derived from the analysis are indicated as well as the domain composition of MTPs. Sequences rbaltic and rbaltic2 correspond to Rhodopirellula baltica; mloti1 and mloti2, Mesorhizobium loti; dvulamhe, Desulfovibrio vulgaris [GenBank:YP_010202]; vparaamhe, Vibrio parahaemolyticus; phpramhe, Photobacterium profundum; bjapo, Bradyrhizobium japonicum. Additional details are provided in Table S2, Additional file 1.