ex·o·nu·cle·ase (ěk'sō-nōō'klē-ās', -āz', -nyōō'-) n. Any of a group of enzymes that catalyze the hydrolysis of single nucleotides from the end of a DNA or RNA chain.
Main Entry: exo·nu·cle·ase Pronunciation: "ek-sO-'n(y)ü-klE-"As, -"Az Function: noun : an enzyme that breaks down a nucleic acid byremoving nucleotides one by one from the end of a chain —compare ENDONUCLEASE
exonuclease ex·o·nu·cle·ase (ěk'sō-n&oomacr;'klē-ās', -āz', -ny&oomacr;'-) n. Any of a group of enzymes that catalyze the hydrolysis of single nucleotides from the end of a DNA or RNA chain.