Phylogenetic trees based on the ACDS complex and the 16S rRNA genes.

<p>A) Concatenated alignment of the sequences of five proteins encoded by the core genes (<i>acs/cdhA-D</i> and <i>acs/cdhF</i>) involved in the ACDS complex in the acetyl-CoA pathway. B) Alignment of the sequences of 16S rRNA genes. The complete species names for all abbreviations are listed in the legend of <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0030559#pone.0030559.s003" target="_blank">Figure S3</a>. The numbers indicate the percentage of bootstrap samples supporting the internal branches. Bootstrap values less than 50% were omitted from this figure. Dark green, <i>Thermoanaerobacterales</i>; light green, <i>Clostridiales</i>; black, <i>Desulfobacterales</i>; red, <i>Methanobacteriales</i>; orange, <i>Methanococcales</i>; dark blue, <i>Methanomicrobiales</i>; magenta, <i>Methanosarcinales</i>.