R.EcoRII
= R.EcoRII
{wiki=R.EcoRII}
R.EcoRII, more commonly known as EcoRII, is a type II restriction enzyme isolated from the bacterium *Escherichia coli* strain RY13 (the source of the enzyme's name). Restriction enzymes are proteins that recognize specific sequences of nucleotides in DNA and cleave the DNA at or close to these sites.