3.6.1.42 APY1, DIPP1, E-NTPDase, ecto-nucleoside triphosphate diphosphohydrolase, gda1p (GDA1 gene product), Gdap1, Gdp1p, GDPase, guanosine diphosphatase, KlGdap1, phosphatase, guanosine di-, UDPase - -, 488582, 655389, 655628, 733091, 756751, 758117