Could induce apoptosis in a BH3 domain-dependent manner. The direct interaction network of Bcl-2 family members may play a key role in modulation RTL10/BOP intrinsic apoptotic signaling activity. Interacts (via BH3 domain) with VDAC1. Interacts with pro-survival Bcl-2 family members, BCL2, BCL2L1 isoform Bcl-X(L), MCL1, BCL2A1 and BCL2L2. Interacts with BAX and BAK1. Ubiquitously expressed. The BH3 motif is required for pro-apoptotic activity and for interaction with pro-survival Bcl-2 family members. Truncated N-terminus.