In males, required for non-apoptotic death of the linker cell once it has finished guiding gonad elongation at the end of larval development. May be involved in nuclear envelope crenellation in the linker cell. In males, promotes linker cell survival. In males, promotes linker cell survival. Forms aggregates. Does not form aggregates. Does not form aggregates. Expressed in the linker cell just before it dies. The coiled-coil domains in isoform d are important for linker cell death. RNAi-mediated knockdown causes the survival of the linker cell in 16 percent of animals.