GCA_000009705.1 all2687 definition type I restriction-modification enzyme S subunit GCA_000009705.1 all2688 definition type I restriction enzyme, modification chain GCA_000009705.1 all2689 definition type I restriction enzyme, modification chain GCA_000009705.1 alr3473 definition type I restriction-modification enzyme R subunit GCA_000009705.1 alr3475 definition type I restriction modification enzyme M subunit GCA_000009705.1 alr3476 definition type I restriction-modification enzyme S subunit GCA_000009705.1 alr3477 definition type I restriction-modification enzyme S subunit GCA_000009705.1 alr3618 definition type I restriction-modification enzyme R subunit GCA_000009705.1 alr3620 definition type I restriction modification enzyme M subunit GCA_000009705.1 alr4597 definition type I restriction-modification system DNA methylase