In the name of a restriction enzyme, which of the following need not always be mentioned?
Generic name of the organism from which the enzyme is obtained.
Species name of the organism from which the enzyme is obtained.
Name of the strain of the organism from which the enzyme was isolated.
Roman numerical which indicates the serial order of the enzyme isolated from the organism.
Strain name is not mentioned in the nomenclature of some restriction enzymes which are obtained directly from naturally occurring organism. Ex: Pvu I