Fig. 2.

Schematic representation of the three IF2 chimeric proteins. (A) BaSu1; (B) BaSu2; (C) SuBa. On the three-dimensional structure of Methanobacterium thermoautotropicum IF2/5B (PDB ID 1G7R; Roll-Mecak et al., 2000) the different domains have been indicated with the following colour code: blue, domains from B. stearothermophilus IF2; red, domains from S. solfataricus aIF2/5B; green, C-terminal α-helices (H13 and H14) from S. solfataricus; gold, C-terminal amino acids from B. stearothermophilus IF2. A schematic representation of the primary structure showing the different domains in the same colour code is presented below.