Enables identical protein binding activity. Acts upstream of or within negative regulation of extrinsic apoptotic signaling pathway in absence of ligand; negative regulation of intrinsic apoptotic signaling pathway; and positive regulation of apoptotic process. Located in membrane. Is expressed in early conceptus; epididymis; meninges; and ovary. Human ortholog(s) of this gene implicated in multiple myeloma; myelodysplastic syndrome; and stomach carcinoma. Orthologous to human BCL2L10 (BCL2 like 10). [provided by Alliance of Genome Resources, Apr 2022]