Predicted to be involved in calcium import into the mitochondrion and positive regulation of mitochondrial calcium ion concentration. Predicted to act upstream of or within calcium ion transport. Predicted to be located in mitochondrial inner membrane. Predicted to be integral component of membrane. Predicted to be active in mitochondrion. Predicted to be integral component of mitochondrial inner membrane. Is expressed in brain; heart; and liver. Orthologous to human MCUR1 (mitochondrial calcium uniporter regulator 1). [provided by Alliance of Genome Resources, Apr 2022]