Figure 8.

Phylogeny of the SpoIISB and SpoIISC proteins. Neighbor-joining phylogenetic tree based on the SpoIISB and SpoIISC protein sequences from selected species. The SpoIISB_sub proteins are colored cyan; the SpoIISC_sub proteins are blue; the SpoIISB1_cer proteins are magenta; the SpoIISB2_cer proteins are red; the SpoIISC1_cer proteins are dark green; the SpoIISC2_cer proteins are light green; and the SpoIISB_cer and SpoIISC_cer proteins from the short form are black. The scale bar shows evolutionary distance in the number of amino acid substitutions per site. The abbreviations are from Table S3.