ID 3.1.3.91 DE 7-methylguanosine nucleotidase. AN N(7)-methylguanylate 5'-phosphatase. CA (1) N(7)-methyl-GMP + H2O = N(7)-methylguanosine + phosphate. CA (2) CMP + H2O = cytidine + phosphate. CC -!- The enzyme also has low activity with N(7)-methyl-GDP, producing CC N(7)-methyl-GMP. CC -!- Does not accept AMP or GMP, and has low activity with UMP. DR Q7ZWS2, 5N3BA_XENLA; Q2TAG6, 5N3BB_XENLA; Q5ZID6, 5NT3A_CHICK; DR Q9H0P0, 5NT3A_HUMAN; Q9D020, 5NT3A_MOUSE; Q5ZKF6, 5NT3B_CHICK; DR Q9W197, 5NT3B_DROME; Q969T7, 5NT3B_HUMAN; Q3UFY7, 5NT3B_MOUSE; DR Q6AYP7, 5NT3B_RAT ; Q9HDU9, 5NTD1_SCHPO; Q9US39, 5NTD2_SCHPO; DR Q05927, 5NTD_BOVIN ; P21589, 5NTD_HUMAN ; Q61503, 5NTD_MOUSE ; DR P21588, 5NTD_RAT ; P38887, 5NTD_YEAST ; //