Method for producing the afl II restriction endonuclease and methylase.

摘要

The present invention is directed to a method for cloning and producing the Afl II restriction endonuclease by 1) introducing the restriction endonuclease gene from Anabaena flos-aquae into a host whereby the restriction gene is expressed; 2) fermenting the host which contains the plasmid encoding and expressing the Afl II restriction endonuclease activity, and 3) purifying the Afl II restriction endonuclease from the fermented host which contains the plasmid encoding and expressing the Afl II restriction endonuclease activity.