nucleotidyltransferase

noun

nu·​cleo·​ti·​dyl·​trans·​fer·​ase ˌn(y)ü-klē-ə-ˈtīd-ᵊl-ˈtran(t)s-(ˌ)fər-ˌās, -ˌāz 

: any of several enzymes that catalyze the transfer of a nucleotide residue from one compound to another