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单词 restriction endonuclease
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restriction endonuclease
restriction endonuclease n. Molecular Biology any of a group of enzymes, found in bacteria, which cleave DNA molecules at or near a specific short sequence of nucleotides.Some types of restriction endonuclease also carry out methylation of DNA, protecting it from degradation.
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1969 Biochimica et Biophysica Acta 195 219 (title) The Escherichia coli B restriction endonuclease.
1991 D. J. Weatherall New Genetics & Clin. Pract. (ed. 3) iv. 75 Fractionation of DNA became possible after the discovery of a family of bacterial enzymes called restriction endonucleases.
2004 J. Playfair Living with Germs (2007) iii. 92 Bacteria have enzymes that cut up viral DNA—the same restriction endonucleases that are so indispensable to the molecular biologist today.
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