Predicted to enable calcium channel activity; identical protein binding activity; and uniporter activity. Involved in mitochondrial calcium ion transmembrane transport and positive regulation of mitochondrial calcium ion concentration. Located in mitochondrion. Part of calcium channel complex. Is expressed in several structures, including central nervous system; genitourinary system; gut; limb segment; and vertebral axis musculature. Orthologous to human MCU (mitochondrial calcium uniporter). [provided by Alliance of Genome Resources, Apr 2022]