The protein encoded by this gene is similar to E-type nucleotidases (NTPases)/ecto-ATPase/apyrases. NTPases, such as CD39, mediate catabolism of extracellular nucleotides. ENTPD5 contains 4 apyrase-conserved regions which is characteristic of NTPases. [provided by RefSeq, Jan 2009],CD39L4, NTPDase-5, PCPH,Cancer,Endocrine & Metabolism,Epigenetics & Nuclear Signaling,Nucleotide metabolism,Signal Transduction,Tumor biomarkers,ENTPD5