msk:MSUIS_02280 K03427 type I restriction enzyme M protein [EC:2.1.1.72] | (GenBank) hsdM; probable type I restriction-modification system DNA methylase, HsdM msk:MSUIS_02270 K01154 type I restriction enzyme, S subunit [EC:3.1.21.3] | (GenBank) hsdS; Type I restriction-modification system, specificity protein, probable fragment