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Sse8647I, a new type II restriction endonuclease from a Streptomyces species cutting at 5'-AG/GWCCT-3'.

We isolated and characterized a new type II restriction endonuclease which recognizes the palindromic heptanucleotide sequence 5'-AGGWCCT-3' and cleaves double-stranded DNA after the first G in the sequence from a microorganism belonging to Streptomyces species. This enzyme cleaves adenovirus 2 DNA at eight sites, but does not cleave lambda phage, pBR322, pUC18 and 19, M13mp18 and 19, SV40, ColE1 and phi X174 DNAs.