Fig. 3
From: Role of phage ϕ1 in two strains of Salmonella Rissen, sensitive and resistant to phage ϕ1
Phage ϕ1 properties. a The phylogenetic tree shows a strong DNA identity between ϕ1 and 5 members of the Podovoridae (3 Salmon and 2 Entero phages). The tree is based on the alignment of 39 phage genomes. The bar indicates branch length scale. b Transmission Electron Microscopy (TEM) of bacteriophage ϕ1. The short and non-contractile tail, characteristic of Podoviridae, confirms ϕ1 as a member of this family. The scale bar corresponds to 100 nm. c Upon excision, phage ϕ1 transduces a 5 kb long region of the host genome. The region includes the following genes: 5 hypothetical proteins, 1 phage endopeptidase, 1 HNH homing endonuclease, 1 lysozyme and 1 phage Nin protein. d The phage ϕ1 insertion point is at the end of the RRϕ1+ strain genome (from 4,828,664 to 4, 834, 023 bps)