Adenine-specific methyltransferase activity Eco57IA eco57IR T257_ECOLX MNKKDQLQRLIDKYKSDIDYYRSARYNETQLRTDFLDQLFLILGWDITNAAGKPTNEREVLVEEGLKARAGENTKKPDYTFRLFSERKFFLEAKKPSVDISTTIEPALQVRRYGFTAKLKISVLSNFEYTAIYDCSNQVKETDSVANSRIKLYHFTELVDKFDEINNLIGRESVYTGHFDNEWSEIENKILRFSVDDLFLKQINDWRLLLANEFLQIKNELPEEKLNDLVQNYINSIVFLRVCEDRDLEEYETLYHFAQDKDFQSLVKKLKSSDKKYNSGLFSLEYIDELLSNANSCIWSIIEQLYFPQSTYSFSVFSSDILGNIYEIFLSEKVRIDELGNVKIQPKEEHIDRDVVTTPTHIVKEIIRNTVVEYCKGKSDIEILNSKFADIACGSGAFIIEAFQFIQDILIDYYIQNDKSKLQQISEHTYKLKFEVKREILCKCIYGIDKDYNATKACTFGLLLKLLEGETTETIGKDTPILPALDTNILFGNSLIDSGDKVKQEDIFSINPFDLTNYQFDVIVGNPPYMATEHMNQLTPKELDIYKRKYKSAYKQFDKYFLFIERSIQILKEYGYLGYILPSRFIKVDAGKKLRKFLSENKYLSKLISFGSHQVFKNKTTYTCLLFLNKENHDNFSFYEVKDFKKWLTREDKYLLSSTYQTSSLDSDTWVLEKKINDILKLMFSKSEQLGNIVGKSNVANGIQTSANKYYIHKEIKSENGFIYFEYDGIEYHIEKELTRPYFETNRSGDDSFYTYKDVEPNSFVVYPYKKVGERIQFIEYDELKRQYPKLFEFLQVVKVHLNDKKRSIKPDPTGPNEWYRYGRSQALENCDVDQKLIVGILSNGYKYSIDNHRTFVSSGGTAGYSIINIPNNVRYSIYYIQAILTSKYLEWFASIYGDIFRGRFVARGTKVQTRMPIPTIDFDDPKQKEIHDTISSKQQYLNKLYSQTQKSADRDKIIFERQFEQEKIQMDYLIKNLFDLGDLDSEIPTVEDLYKNL Type IIS restriction enzyme Eco57I 998 Endonuclease Eco57I Recognizes the double-stranded sequences CTGAAG and CTTCAG and cleaves respectively 22 bases after C-1 and 14 bases before C'-1. Also acts as a methylase that causes specific methylation on A-5 on one strand, the other strand being methylated by the Eco57IB methylase.