DNA nucleotidylexotransferase

DNA nu·cle·o·ti·dyl·ex·o·trans·fer·ase

an enzyme that can catalyze the addition of a nucleotide, presented as a nucleoside triphosphate, on a DNA or similar polydeoxynucleotide; has been used in DNA recombination studies to add nucleotides to form homopolymer tails. Synonym(s): terminal addition enzyme, terminal deoxynucleotidyltransferase