Excinuclease: The excision nuclease involved in nucleotide exchange repair of DNA. Exon: The coding sequence of a eukaryotic gene (see also open reading frame).
Excinuclease uvrabc enzyme that removes thymidine dimers by hydrolyzing the damaged DNA strand at sites on either side of the dimer site.
See also: Mutation, Nucleotide, Membrane, G protein, Polymerase
 
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