title: Increasing the Fokl cleavage specificity from 5 to 7 base pairs by two-step methylation.
authors.affiliation: McArdle Laboratory for Cancer Research, University of Wisconsin, Madison 53706.
authors.forename: G
authors.initials: G
authors.lastname: Pósfai
authors.forename: W
authors.initials: W
authors.lastname: Szybalski
mesh_terms: D010582:Bacteriophage lambda / Q000235:genetics; D004262:DNA Restriction Enzymes / Q000378:metabolism*; D004279:DNA, Viral / Q000032:analysis; D015252:Deoxyribonucleases, Type II Site-Specific; D008745:Methylation; D013379:Substrate Specificity
chemical_list: D004279:DNA, Viral; D004262:DNA Restriction Enzymes; C035042:endodeoxyribonuclease FokI; D015252:Deoxyribonucleases, Type II Site-Specific