Allele-specific inhibition of λS105 lysis by S105ΔTMD1. RY17303 cultures bearing the indicated prophage and carrying the transactivation plasmid with the indicated allele were induced and monitored as described for Fig. 2. (A) All cultures had λS105 with the plasmid allele SW56am (▪), S105ΔTMD1 (□), S105ΔTMD1,A52V (⋄), or S105ΔTMD1,A52G (Δ). (B) ▪, λS105A52G with SW56am; □, λS105 with SW56am; Δ, λS105A52G with S105ΔTMD1; ▴, λS105 with S105ΔTMD1; ⋄, λS105A52G with S105ΔTMD1,A52G.