Enables inorganic diphosphate transmembrane transporter activity. Acts upstream of or within regulation of bone mineralization. Located in plasma membrane. Is integral component of plasma membrane. Is expressed in several structures, including bone; connective tissue; olfactory epithelium; telencephalon; and vibrissa follicle. Used to study craniometaphyseal dysplasia. Human ortholog(s) of this gene implicated in autosomal dominant craniometaphyseal dysplasia and chondrocalcinosis. Orthologous to human ANKH (ANKH inorganic pyrophosphate transport regulator). [provided by Alliance of Genome Resources, Apr 2022]