Suppresses apoptosis in host cell to promote the viral replication (PubMed:18329683, PubMed:9123849). Has the ability to potentially bind to all the members of the proapoptotic Bcl-2 family (PubMed:18329683, PubMed:28053104). Inhibits autophagy by interacting with host Beclin 1 (BECN1) (PubMed:23228131, PubMed:31461953). Interacts with host BECN1 (via BH3 homology domain); this interaction allows the virus to inhibit BECN1, and thus autophagy (PubMed:23228131, PubMed:31461953). Interacts with host BID (PubMed:28053104). Interacts with host BAX (PubMed:28053104). Expressed in the early phase of the viral replicative cycle (PubMed:32075923). Expressed in the late phase of the viral replicative cycle (By similarity). Belongs to the Bcl-2 family.