| http://www.w3.org/ns/prov#value | - To avoid this drawback, there is a method wherein the amino acid sequence of the restriction endonuclease protein is analyzed, the restriction endonuclease gene is obtained from the genomic DNA of a microorganism that produces the restriction endonuclease by PCR-based DNA amplification on the basis of the sequence data obtained, and wherein a known protein expression system is utilized [Japanese P
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