exonuclease

noun
exo·​nu·​cle·​ase | \ ˌek-sō-ˈnü-klē-ˌās How to pronounce exonuclease (audio) , -ˈnyü-, -ˌāz \

Definition of exonuclease

: 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 Web One 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, "Support Science Journalism," 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, "Assembling a Genome, Piece by Piece," 31 Mar. 2015

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'exonuclease.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of exonuclease

1963, in the meaning defined above

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The first known use of exonuclease was in 1963

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Cite this Entry

“Exonuclease.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/exonuclease. Accessed 18 May. 2021.

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More Definitions for exonuclease

exonuclease

noun
exo·​nu·​cle·​ase | \ ˌek-sō-ˈn(y)ü-klē-ˌās, -ˌāz How to pronounce exonuclease (audio) \

Medical Definition of exonuclease

: an enzyme that breaks down a nucleic acid by removing nucleotides one by one from the end of a chain — compare endonuclease

Comments on exonuclease

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