Chapter 26, Problem 1A

Summary Introduction

Introduction:

Restriction enzyme also recognized as a restriction endonuclease, which is produced by bacteria and used to cleave DNA at specific sites along the molecule. They recognize a short and specific sequence of nucleotide bases of DNA that known as recognition site or recognition sequences and randomly distributed throughout the DNA.

Restriction enzyme helps to eliminate infecting organisms by cleaving the foreign DNA in the bacterial cell. As well as restriction enzymes are employed in the biological laboratory to manipulate fragments of DNA by insertion of new DNA fragment that contains specific genes. Thus, restriction enzymes are indispensable tools of recombinant DNA technology or genetic engineering.