Induces the formation of specific membrane adhesion sites between the inner and outer membranes, apparently leading to host cell lysis. Lysis may be performed via activation of host murein hydrolases. Lysis protein synthesis only occurs when the overlapping capsid gene is translated. Initiation at the lysis gene is prevented by a hairpin structure that sequesters the ribosomal binding site. The ribosome, terminating at the capsid reading frame, covers part of the lysis hairpin, thereby destabilizing the secondary structure and allowing the reading of the lysis gene.