Enables AMP deaminase activity. Predicted to be involved in erythrocyte homeostasis and purine ribonucleotide metabolic process. Predicted to act upstream of or within ADP metabolic process; ATP metabolic process; and energy homeostasis. Predicted to be active in cytosol. Orthologous to human AMPD3 (adenosine monophosphate deaminase 3). [provided by Alliance of Genome Resources, Apr 2022]