Dear aspirant !

Hope you are doing well ! A restriction enzyme is a protein isolated from bacteria that cleaves DNA sequences at sequence-specific sites, producing DNA fragments with a known sequence at each end . The use of restriction enzymes is critical to certain laboratory methods, including recombinant DNA technology and genetic engineering.

Also we can say that , SmaI is an example of a restriction enzyme that cuts straight through the DNA strands, creating DNA fragments with a flat or blunt end .

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