Table containing all GRs with reported and uncharacterized features.

1 specific hit or non-specific hit with expect value closer to 0. Commented in the cells are the conserved residues identified by CD-Blast. 2 Sequencing made by Schouler and Trotereau (2016), available at: https://www.ncbi.nlm.nih.gov/nuccore/AY395687.1. 3 Unreviewed entries selected because of their mention in the following papers: ORFs 3₆-5₆ (Thiaville et al., 2016); ORF 2₃₄ (Majumdar et al. 2004); ORF 5₃₄ (Gárcia-Sanchez et al., 2021); and ORFs 9₃₄-13₃₄ (Lim et al., 2015). 4 Unreviewed entry. No reviewed entries found. 5 PHASTEST attL (2101049.2101064) and attR (2167393.2167408) are too upstream and downstream, respectively, encompassing genes present in all strains – even those lacking phage content. Therefore, the region boundaries were defined using the same criteria applied to the other GRs: end of the first gene common to all strains, beginning of the last gene common to all strains. (XLSX)