ENPP2 encodes the human gene, Ectonucleotide pyrophosphatase/phosphodiesterase 2. It may also be known as: Ectonucleotide pyrophosphatase/phosphodiesterase family member 2; E-NPP 2; Autotaxin; Extracellular lysophospholipase D; LysoPLD; ATX; ATX-X; NPP2; PD-IALPHA; PDNP2. The encoded protein is an enzyme with an amino acid length of 863 and a mass of 99.0 kDa. ENPP2 is a member of the Nucleotide pyrophosphatase/phosphodiesterase family. Homologs of this gene exist in other organisms, including: Frog.