mwe:WEN_00600 K03427 type I restriction enzyme M protein [EC:2.1.1.72] | (GenBank) type I restriction-modification system, M subunit mwe:WEN_00605 K01154 type I restriction enzyme, S subunit [EC:3.1.21.3] | (GenBank) type I restriction enzyme mwe:WEN_00595 K01153 type I restriction enzyme, R subunit [EC:3.1.21.3] | (GenBank) HsdR family type I site-specific deoxyribonuclease