Predicted to enable bis(5'-nucleosyl)-tetraphosphatase (asymmetrical) activity. Predicted to be involved in AMP biosynthetic process; ATP biosynthetic process; and apoptotic process. Located in mitochondrion. Is expressed in several structures, including alimentary system; brain; genitourinary system; heart; and sensory organ. Orthologous to human NUDT2 (nudix hydrolase 2). [provided by Alliance of Genome Resources, Apr 2022]