restriction enzyme meaning

Noun: restriction enzyme

1. 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
   - restriction endonuclease, restriction nuclease

Derived forms: restriction enzymes

Type of: endonuclease

Encyclopedia: Restriction enzyme Restriction enzyme, endonuclease

[Medicine]
n : any of various enzymes that break DNA into fragments at specific sites in the interior of the molecule and are often used as tools in molecular analysis

• dna restriction enzyme:    [Medicine]Enzymes ...
• dna restriction enzyme ecori:    [Medicine]One of t ...
• dna restriction enzyme hindiii:    [Medicine]One of t ...

Examples

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1. it enables a specific gene to be located on a particular restriction enzyme fragment.
2. large dna molecules are first dissected with restriction enzymes to produce specific fragments.
3. restriction enzymes and reerse transcriptase are keys to gene engineering
4. "for the discovery of restriction enzymes and their application to problems of molecular genetics
5. the recombi-nant plasmid pgex-hnadc3 was identified by dma sequencing and restriction enzyme mapping