FIG 1.

The Dps monomer structure displays homology to ferritins. Shown are tertiary structures of Ec-Dps (PDB accession number 1DPS) (A), Ec-FtnA (PDB accession number 1EUM) (B), and Ec-Bfr (PDB accession number 3E1J) (C) (18, 180, 181). Homologous alpha helices are displayed in the same color: red, helix A; blue, helix B; yellow, helix C; orange, helix D. Nonhomologous helices are shown in white. N termini and C termini for each molecule are labeled with a white “N” and a white “C,” respectively.