Non-proportional synteny map showing the relationships between related C. crescentus phages at the protein level. The black blocks represent protein-coding genes in the order they appear in each phage genome, starting with gp1 at the top and running clockwise, with red tick marks indicating 10-gene intervals in phage phiCbK. Black lines connecting blocks indicate similarity of proteins between phages. From innermost to outermost, tracks represent phages phiCbK, Karma, Magneto, Swift and Rogue. Blue, green and purple arcs on the inside track indicate the boundaries of the phage morphogenesis, lysis and DNA replication modules, respectively. Terminal repeat regions were excluded from this figure for clarity.