Predicted to enable hydrolase activity. Predicted to be located in I band and striated muscle dense body. Expressed in ciliated neurons; pharynx; and vas deferens cuboidal cell. Human ortholog(s) of this gene implicated in several diseases, including arterial calcification of infancy; end stage renal disease; and ossification of the posterior longitudinal ligament of spine. Is an ortholog of human ENPP1 (ectonucleotide pyrophosphatase/phosphodiesterase 1); ENPP2 (ectonucleotide pyrophosphatase/phosphodiesterase 2); and ENPP3 (ectonucleotide pyrophosphatase/phosphodiesterase 3).