the enzyme has little activity towards ribonucleoside 2 ' and 5'-monophosphates , and deoxyribonucleoside 3 ' and 5'-monophosphates , and is also inactive towards the 3'-phosphoester linkage of nucleoside cyclic 2',3 ' and 3',5'-monophosphates .
C0035546
ribonucleoside
C0028621
nucleoside