Figure 7
Taxonomic distributions of SAM-binding proteins. Families that have representative members from all three branches of life [Archaea (A), Bacteria (B), and Eukaryotes (E)] are indicated within the rectangular boxes. The corresponding fold type is indicated for each of these families along with the circumference of the circle. A total of 29 families that belong to 10 different fold types contain members in all three branches of life. This information may help to identify the last universal common ancestor of SAM-binding proteins.