BioScience Dictionary

 
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Found Restriction enzyme 3 times.

Displaying results 1 to 10.

1. Restriction enzyme (restriction endonuclease)
A protein that recognizes specific, short nucleotide sequence s and cuts DNA at those sites. Bacteria contain over 400 such enzyme s that recognize and cut over 100 different DNA sequences.

2. Restriction enzyme cutting site
A specific nucleotide sequence of DNA at which a particular restriction enzyme cuts the DNA. Some sites occur frequently in DNA (e.g., every several hundred base pair s), others much less frequently (rare-cutter; e.g., every 10,000 base pairs).

3. Restriction enzymes
A series of enzymes that attach to DNA molecules at specific nucleotide sequences and cut both strands of DNA at those sites. A bacterial enzyme that cuts DNA at a specific recognition sequence. This is a bacterial defense against viral DNA and plasmid DNA and is now used as an important tool in biotechnology.