Question

Explain with the help of a suitable example the naming of a restriction endonuclease.

Answer 1

The naming of a restriction endonuclease is done in the following way:

• I^st letter  represents the genus of the organism from which the enzyme is derived.

• II^nd and III^rd letters represent the species of the organism.

• IV^th letter represents the name of the strain.

• Roman number represents order of isolation.
  
  For example, In EcoRI − Derived from E.coli, strain R.
  It is the I^st to be discovered.