Types of Restriction Endonucleases

Restriction endonucleases are traditionally classified into four different type based on Their subunit composition Cleavage position Sequence specificity Cofactor requirements. However, amino acid sequencing revealed that at the molecular level there are many more than four different types. Type I Type I R-M systems have been found in E.coli, Citrobacter, and Salmonella. They were the … Read More