Question
How are restriction endonuclease enzymes named?
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Answer
In the naming of these enzymes, according to tradition, the first letter of the name is genus and the second and third letters are taken from the species of prokaryotic cells from which they were isolated. Like EcoRI, Eco is derived from Escherichia coli and the letter 'R' is taken from the name of the strain. Roman numbers after the name indicate the order from which the enzyme was isolated from the bacterial strain
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