Enables ATP hydrolysis activity; adenosine-diphosphatase activity; and identical protein binding activity. Involved in several processes, including cellular response to cytokine stimulus; response to amino acid; and response to purine-containing compound. Located in several cellular components, including basolateral plasma membrane; postsynaptic density; and synaptic vesicle. Biomarker of demyelinating disease; hypothyroidism; intrahepatic cholestasis; and transient cerebral ischemia. Human ortholog(s) of this gene implicated in hereditary spastic paraplegia 64. Orthologous to human ENTPD1 (ectonucleoside triphosphate diphosphohydrolase 1). [provided by Alliance of Genome Resources, Apr 2022]