Fig. 7: Proposed model for the evolution of α and β cyanobacteria in aquatic environments.
From: α-cyanobacteria possessing form IA RuBisCO globally dominate aquatic habitats
Each environment and associated fluctuation in carbonate chemistry is shown on the left. On the right, the presence of RuBisCO, carboxysome, transcriptional regulators, carbonic anhydrases and Ci transport systems are shown. In each case, a solid line around each protein denotes its presence in all taxa within the group, whilst dashed symbolizes presence in at least one member of the group.
