Fig. 3.

Sequence alignment of three filamentous bacteriophage major coat proteins. (Top) Sequence alignments of the major coat proteins of IKe, If1, and fd. The secondary structure is shown above the alignments. Completely conserved residues are shown in white on a red background. Conserved residues are boxed. Completely conserved hydrophobic residues with short side chains, aromatic residues, positively charged residues, negatively charged residues, and polar residues are marked by orange circles, orange cubes, blue triangles, red triangles, and magenta stars, respectively. (Bottom) Stereo ribbon diagrams showing the locations of the completely conserved residues in the IKe p8 structure. The conserved residues are represented by balls that are colored as described in the legend for the Top panel.