エキソヌクレアーゼエキソヌクレアーゼMeanings1nounexonucleaseTechnical term in molecular biology; an enzyme that cleaves nucleotides from the ends of a nucleic acid chain.エキソヌクレアーゼはDNAの末まっ端たんからヌクレオチドを一ひとつずつ切きり出だす。