Predicted to enable calcium channel inhibitor activity. Predicted to be involved in calcium import into the mitochondrion and mitochondrial calcium ion homeostasis. Predicted to be located in mitochondrion and nucleoplasm. Predicted to be intrinsic component of membrane. Predicted to be part of uniplex complex. Predicted to be integral component of mitochondrial inner membrane. Orthologous to human MCUB (mitochondrial calcium uniporter dominant negative subunit beta). [provided by Alliance of Genome Resources, Apr 2022]