title: Hydrolysis of ribonucleoside 2',3'-cyclic phosphates by influenza and Newcastle disease viruses.
abstract: Two enzymatic activities hydrolysing ribonucleoside 2', 3'-cyclic phosphates (2', 3'-cNMP) to 2'- or 3'- nucleoside monophosphate were found associated with influenza and Newcastle disease viruses. The two enzymatic activities differed from each other by temperature optima and thermoresistance. 2', 3'-Cyclic nucleotide 3'-phosphohydrolase was responsible for splitting of the substrate to 2'-NMP. Splitting of the substrate to 3'-NMP was due either to ribonuclease or to 2', 3'-cyclic nucleotide 2'-phosphohydrolase.
mesh_terms: D015087:2',3'-Cyclic-Nucleotide Phosphodiesterases / Q000378:metabolism*; D000242:Cyclic AMP / Q000378:metabolism; D003563:Cyclic CMP / Q000378:metabolism; D009980:Influenza A virus / Q000201:enzymology*; D009522:Newcastle disease virus / Q000201:enzymology*; D010727:Phosphoric Diester Hydrolases / Q000378:metabolism*; D013696:Temperature
chemical_list: D003563:Cyclic CMP; D000242:Cyclic AMP; D015087:2',3'-Cyclic-Nucleotide Phosphodiesterases; D010727:Phosphoric Diester Hydrolases