eco57IM MKFKADQTSQKLRGGYYTPQNLADYVTKWVLSKNPKTILEPSCGDGVFIQAIANNGYNSNIELFCFELFDTEASKALERCKLNNFSNATITEGDFLVWANECLKKNKQIFDGALGNPPFIRYQFLERNFQEQAQLVFEHLDLKFTKHTNAWVPFLLSSLALLKQGGRIGMVIPSEISHVMHAQSLRSYLGHVCSKIVIIDPKEIWFEDTLQGAVILLAEKKQYPDEASQGVGIVSVSGFEFLQEDPNVLFNDTAGINGETVEGKWTKATLSIDELQLIKRVIAHPDVRKFKDIAKVDVGRYCDGANNYFLVDNETVKLYKLERFAHPMFGRSQHCPGIIYDEKQHIENQEKGLPTNFLYIDEEFEYLSKSVKNYIKLGEVEEYHKRYKCRIRKPWFKVPSVYSTEIGMLKRCHDAPRLIHNRVRAYTTDTAYRVSSTVTSTENLVCSFLNPITVITAELEGLFYGGGVLELVPSEIEKLYILIVEGLEHNVEELNLLIKDGQIERVIRQQGSLILGTLGFTQEENEKLVEIGRSLEIEGYVSRV Modification methylase Eco57IB 544 Adenine-specific methyltransferase Eco57IB MT57_ECOLX eco57IBM This methylase recognizes the double-stranded sequence 5'-CTGAAG-3' in one strand and 5'-CTTCAG-3' in the other, causes specific methylation on A-5 on one strand, and protects the DNA from cleavage by the Eco57I endonuclease.