Data and code for: Specificity-subunit truncation drives repeated loss of Type I restriction in multi-host Streptococcus agalactiae

Data and code supporting a manuscript that combines base-resolution methylomes and nucleotide-resolution mobilomes of five closed Streptococcus agalactiae genomes from farmed tilapia, human clinical infection and water buffalo with a Type I restriction-modification analysis across 1,742 host-labelled public genomes. Contains the state-classification and lineage analysis script, the 1,742-genome feature table, predicted HsdS structures, per-site methylation tables, the mobile-element inventory with resistance and virulence carriage, and the anti-phage defence tables. Supersedes two earlier deposits, which should not be cited for this work.