Figure 1.

Schematic drawing of the bacteriophage T4 long tail fiber. The baseplate-binding proximal end is indicated with a B, the receptor-binding distal end with an R. The component proteins are indicated with colors: gp34 in red, gp35 in green, gp35 in blue, and gp37 in yellow. The carboxy-terminal end of gp34 is indicated with an asterisk. The numbers inside the red gp34 outline indicate where the P3, P4, and P5 domains are located. A box indicates the approximate size of the largest fragment for which the structure was solved (residues 744–1289).