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Do restriction enzymes exist naturally in organisms? If so, what is their purpose?

April 26, 2017Biology enzymes exist Mathematics naturally organisms purpose

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Do restriction enzymes exist naturally in organisms? If so, what is their purpose?

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Yes they exist in bacteria. They are a natural protection against phages (which attack the bacteria) by slicing their DNA. This is why many bacteria need protection for their own DNA from their own enzymes, by methylating their DNA for example.