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restriction enzymes

См. также в других словарях:

  • restriction enzymes — Enzymes produced by host cells that cleave virus DNA at specific points and thus protect the cell from virus infection; they are used in carrying out genetic engineering …   Dictionary of microbiology

  • Restriction landmark genomic scanning — (or RLGS) is a genome analysis method that allows for rapid simultaneous visualization of thousands of landmarks, or restriction sites. Using a combination of restriction enzymes some of which are specific to DNA modifications, the technique can… …   Wikipedia

  • restriction endonucleases — (= restriction enzymes) Class of bacterial enzymes that cut DNA at specific sites. In bacteria their function is to destroy foreign DNA, such as that of bacteriophages (host DNA is specifically modified at these sites). Type I restriction… …   Dictionary of molecular biology

  • Restriction site — Restriction sites, or restriction recognition sites, are specific sequences of nucleotides that are recognized by restriction enzymes. The sites are generally palindromic, (because restriction enzymes usually bind as homodimers) and a particular… …   Wikipedia

  • restriction endonuclease —    Enzymes (molecular scissors) that cleave double stranded DNA at specific palindromic base recognition sequences. The sequences are usually different for each enzyme. Restriction enzymes are named according to the bacterial species of origin …   Forensic science glossary

  • restriction enzyme — restriction endonuclease an enzyme, obtained from bacteria, that cuts DNA into specific short segments. Restriction enzymes are widely used in genetic engineering …   The new mediacal dictionary

  • Restriction enzyme — Glossary Restriction …   Wikipedia

  • restriction enzyme — Biochem. 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. [1960 65] * * * Protein (more specifically, an endonuclease)… …   Universalium

  • Restriction enzyme — An enzyme from bacteria that can recognize specific base sequences in DNA and cut the DNA at that site (the restriction site). A restriction enzyme acts as a biochemical scissors. Also called a restriction endonuclease. A restriction enzyme is a… …   Medical dictionary

  • Restriction digest — A restriction digest is a procedure used in molecular biology to prepare DNA for analysis or other processing. It is sometimes termed DNA fragmentation (this term is used for other procedures as well). Hartl and Jones describe it this way: This… …   Wikipedia

  • Restriction map — A restriction map is a map of known restriction sites within a sequence of DNA. Restriction mapping requires the use of restriction enzymes. In molecular biology, restriction maps mdash;along with DNA DNA hybridization, and DNA or RNA sequence… …   Wikipedia

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