May play a role in apoptosis. Interacts with MCL1, BCL2, BCL2L1/BCL-Xl, BCL2A1 and BCL2L2/BCL-w. Interacts with the myosin V actin motor complex through its binding to DLC2. Widely expressed with an abundant expression in pancreas, liver kidney and hematopoietic tissues. Belongs to the Bcl-2 family.