Takara DNA restriction enzymes such as Dde I are unsurpassed in quality and purity. We’ve been producing restriction enzymes for over 30 years and were the first manufacturers to offer commercially available restriction enzymes in Japan. Each lot of every DNA restriction enzyme undergoes stringent quality control tests. Takara-brand DNA restriction enzymes are supplied with optimized buffers that provide maximum activity during restriction enzyme digestion. Visit the Restriction Enzyme Applications pages for information on how to digest DNA, relative activity in each Universal Buffer, star activity, buffers for double digestion, effects of DNA methylation, how to inactivate enzymes, and more.