Predicted to enable calcium ion binding activity and protein heterodimerization activity. Predicted to be involved in calcium import into the mitochondrion; negative regulation of mitochondrial calcium ion concentration; and positive regulation of mitochondrial calcium ion concentration. Predicted to be located in mitochondrial inner membrane and mitochondrial intermembrane space. Predicted to be part of uniplex complex. Orthologous to human MICU2 (mitochondrial calcium uptake 2). [provided by Alliance of Genome Resources, Apr 2022]