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Figure 4 | BMC Genomics

Figure 4

From: Genome organisation of the Acinetobacter lytic phage ZZ1 and comparison with other T4-like Acinetobacter phages

Figure 4

Divergence of the core gene organisation between T4 and T4-like Acinetobacter phages. The map was artificially split into upper and lower halves. The bars indicate identified ORFs and are drawn to scale. Genes transcribed in the forward direction (or transcribed rightwards) are displayed above those genes transcribed in the reverse direction (or transcribed leftwards). The functional category of T4 genes is indicated by the color-coded bars described in Figure 1. The numbers and acronyms shown directly above the color-coded bars refer to the gene names. Core and Quasicore genes described by Petrov et al. [2] are shown in red and blue font, respectively. Homologous signature genes, shared by T4 and the 5 T4-related Acinetobacter phages, are connected with light blue shading. Conversely, homologous unknown genes, which shared significant similarity with all 5 T4-related Acinetobacter phages but no significant similarity with T4 proteins, are linked by dark and light purple shading. Genes linked by dark purple shading are specific to the 5 T4-related Acinetobacter phages in the GenBank database. In addition, 4 signature T4 genes, which are linked by green shading, could reflect a dominant feature in the evolution of all 5 T4-related Acinetobacter phages.

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