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restriction enzyme

noun, Biochemistry
1.
any of a group of enzymes that catalyze the cleavage of DNA molecules at specific sites: used for gene splicing in recombinant DNA technology and for chromosome mapping.
Origin
1960-1965
1960-65
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for restriction enzyme
  • Since they are small, one restriction enzyme will usually only find one site for its specific cutting capabilities.
  • Since they are small, one restriction enzyme will usually find only one site for its specific cutting capabilities.
  • Each restriction enzyme recognizes its own specific sequence of four to eight nucleotide bases--the building blocks of genes.
British Dictionary definitions for restriction enzyme

restriction enzyme

noun
1.
any of several enzymes produced by bacteria as a defence against viral infection and commonly used to cut DNA for genetic manipulation or diagnosis
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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restriction enzyme in Medicine

restriction enzyme re·stric·tion enzyme (rĭ-strĭk'shən)
n.
Any of a group of enzymes that cleave DNA at specific sites to produce discrete fragments, used especially in gene-splicing. Also called restriction endonuclease.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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13
15
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