FIG. 2.

Comparison of the morphogenesis modules from coliphages JS98 and T4. Alignment of the baseplate, tail, and head genes from T4 (upper line) and contig 9 from JS98 (lower line). Genes sharing protein sequence identity are linked by blue to red shading according to the color key provided at the bottom right. The likely function of the genes is indicated by the color of the arrows according to the color key at the bottom left. All T4 genes are annotated with their gene numbers, and selected genes are annotated with their functions. The top line provides a base pair scale and the positions of the first and last depicted T4 genes on the T4 genome.