Enables IMP 5'-nucleotidase activity. Involved in allantoin metabolic process and nucleoside monophosphate catabolic process. Acts upstream of or within deoxyribonucleotide catabolic process. Located in cytosol. Is expressed in several structures, including alimentary system; brain; genitourinary system; respiratory system; and thymus. Orthologous to human NT5C (5', 3'-nucleotidase, cytosolic). [provided by Alliance of Genome Resources, Apr 2022]