spp:SPP_1850 K06223 DNA adenine methylase [EC:2.1.1.72] | (GenBank) modification methylase spp:SPP_1848 K01155 type II restriction enzyme [EC:3.1.21.4] | (GenBank) type II restriction enzyme spp:SPP_1849 K00571 site-specific DNA-methyltransferase (adenine-specific) [EC:2.1.1.72] | (GenBank) DNA methylase