Production of New Restriction Endonuclease VpaK11BI Recognizing Sequence 5'-GGWCC-3' in a Haemolysin-less Mutant of Vibrio parahaemolyticus

Abstract

High restriction endonuclease activity was found in a haemolysin-less mutant of the Vibrio parahaemolyticus 1743-1 strain. The endonuclease, named VpaK11BI, recognized the palindromic pentanucleotide sequence of 5'-GGWCC-3' and cleaved double-stranded DNA after the first G, which is exactly the same as the specificity of AvaII. The haemolysin-less mutant of V parahaemolyticus is now available for producing the valuable restriction endonuclease on a commercial scale.