Figure 1From: Signature proteins that are distinctive of alpha proteobacteriaSummary diagram showing the distribution pattern of various α-proteobacteria signature proteins. The arrows indicate the evolutionary stages where these signature proteins were likely introduced. Some proteins, which are sporadically present in α-proteobacteria are not shown here. The branching position of α-proteobacteria relative to other bacterial groups was deduced as described in earlier work [13,17,40].Back to article page