ID 3.6.1.5 DE apyrase. AN adenosine diphosphatase. AN ADPase. AN ATP-diphosphatase. AN ATP-diphosphohydrolase. CA a ribonucleoside 5'-triphosphate + 2 H2O = a ribonucleoside 5'-phosphate CA + 2 phosphate + 2 H(+). CC -!- Apyrases are active against both di- and triphosphate nucleotides CC (NDPs and NTPs) and hydrolyze NTPs to nucleotide monophosphates CC (NMPs) in two distinct successive phosphate-releasing steps, with CC NDPs as intermediates. CC -!- They differ from ATPases, which specifically hydrolyze ATP, CC by hydrolyzing both ATP and ADP. CC -!- Most of the ecto-ATPases that occur on the cell surface and hydrolyze CC extracellular nucleotides belong to this enzyme family. DR Q9SQG2, APY1_ARATH ; Q8H7L6, APY1_ORYSJ ; Q9SPM5, APY2_ARATH ; DR Q6Z4P2, APY2_ORYSJ ; Q9XI62, APY3_ARATH ; Q2QYE1, APY3_ORYSJ ; DR Q8H1D8, APY4_ARATH ; Q6NQA8, APY5_ARATH ; O80612, APY6_ARATH ; DR F4JSH1, APY7_ARATH ; P50635, APY_AEDAE ; E0D877, APY_AEDAL ; DR Q5TVM9, APY_ANOGA ; O96559, APY_CIMLE ; Q95P65, APY_GLOMM ; DR Q06K77, APY_PHLDU ; Q9GTP7, APY_PHLPP ; P80595, APY_SOLTU ; DR B3A0N5, APY_TABYA ; O18956, ENTP1_BOVIN; P49961, ENTP1_HUMAN; DR P55772, ENTP1_MOUSE; Q9MYU4, ENTP1_PIG ; P97687, ENTP1_RAT ; DR O75355, ENTP3_HUMAN; Q8BFW6, ENTP3_MOUSE; A0JND9, ENTP8_BOVIN; DR O93295, ENTP8_CHICK; Q5MY95, ENTP8_HUMAN; Q8K0L2, ENTP8_MOUSE; DR Q5DRK1, ENTP8_RAT ; Q9USP2, YND1_SCHPO ; P40009, YND1_YEAST ; //