Predicted to enable protein heterodimerization activity and protein homodimerization activity. Involved in negative regulation of apoptotic process. Acts upstream of or within B cell homeostasis and negative regulation of B cell apoptotic process. Predicted to be located in cytoplasm. Predicted to be active in mitochondrial outer membrane. Is expressed in several structures, including bone; central nervous system; heart; hemolymphoid system; and respiratory system. Orthologous to human BCL2A1 (BCL2 related protein A1). [provided by Alliance of Genome Resources, Apr 2022]