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One of the serious public health concerns is food contaminated with pathogens and their vital activity products such as toxins.  Bacillus cereus  group of bacteria includes well-known pathogenic species such as  B. anthracis, B. cereus sensu stricto (ss) ,  B. cytotoxicus  and  B. thuringiensis . In this report, we describe the  Bacillus  phages vB_BcM_Sam46 and vB_BcM_Sam112 infecting species of this group. Electron microscopic analyses indicated that phages Sam46 and Sam112 have the myovirus morphotype. The genomes of Sam46 and Sam112 comprise double-stranded DNA of 45,419 bp and 45,037 bp in length, respectively, and have the same GC-content. The genome identity of Sam46 and Sam112 is 96.0%, indicating that they belong to the same phage species. According to the phylogenetic analysis, these phages form a distinct clade and may be members of a new phage genus, for which we propose the name ‘ Samaravirus ’. In addition, an interesting feature of the Sam46 and Sam112 phages is the unusual structure of their small terminase subunit containing N-terminal FtsK_gamma domain.

vB_BcM_Sam46 and vB_BcM_Sam112, members of a new bacteriophage genus with unusual small terminase structure