restriction enzyme(redirected from Deoxyribonucleases, type ii site-specific)
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Any of a group of enzymes that catalyze the cleavage of DNA at specific sites to produce discrete fragments, used especially in genetic engineering. Also called restriction endonuclease.
(Biochemistry) any of several enzymes produced by bacteria as a defence against viral infection and commonly used to cut DNA for genetic manipulation or diagnosis
any of a group of enzymes that are capable of cutting DNA at specific sites along its strand.
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|Noun||1.||restriction enzyme - any of the enzymes that cut nucleic acid at specific restriction sites and produce restriction fragments; obtained from bacteria (where they cripple viral invaders); used in recombinant DNA technology|
endonuclease - a nuclease that cleaves nucleic acids at interior bonds and so produces fragments of various sizes