: an enzyme that breaks down a nucleic acid by removing nucleotides one by one from the end of a chain — compare endonuclease
Examples of exonuclease in a Sentence
Recent Examples on the WebOne of these advantageous proteins is an enzyme called exonuclease (ExoN), which helps the virus proofread and correct copies as they are made.
Mark Fischetti, Scientific American, 23 June 2020 Double stranded DNA fragments with overlapping sequence stretches are inserted into a reaction, and exonuclease enzymes chew back one end of each piece, exposing complementary sequences that link up, joining the two fragments together.
Jeffrey Marlow, WIRED, 31 Mar. 2015
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