Figure 5
From: Phylogenomics and signature proteins for the alpha Proteobacteria and its main groups
Partial sequence alignments of RNA polymerase β subunit (RpoB) showing a large insert (boxed) that is a distinctive characteristic of various Rhodospirillales species and not found in any other bacteria. There are two homologs of RpoB in Magentospirillum (Mag.) magneticum and only one of these contains the insert. The dashes (-) denote identity with the amino acid on the top line.