1) Biotechnology 
``Eco``RI (pronounced, `eco R one`) is an endonuclease enzyme isolated from strains of E. coli, and is part of the restriction modification system. In molecular biology it is used as a restriction enzyme. It creates 4 nucleotide sticky ends with 5` end overhangs of AATT. The nucleic acid sequence where the enzyme cuts is GAATTC, which, as t...