Phamerator-generated genome maps. A. Genome maps of six Cluster D phages (Plot, Gumball, Troll4, Butterscotch, PBI1 and Adjutor). The genomes are shown in two tiers. Genes are color-coded according to their pham assignment. Gene numbers are shown within each gene box, and the pham number and number of pham members in parentheses shown above each gene. Pairwise nucleotide sequence similarities are presented as colored shading between genomes; color spectrum reflects the extent of nucleotide sequence similarities with violet being the most similar and red being the least similar. No shading shows that there is no similarity with a BLASTN score of 10-4 or better.