A specialised transducing phage of P22 for which the ability to form plagues is associated with transduction of the proAB region.
D005796:Genes; D005827:Genetics, Microbial; D009154:Mutation; D012483:Salmonella Phages / Q000302:isolation & purification*; D012486:Salmonella typhimurium; D014161:Transduction, Genetic