TABLE 1.

Growth of λ derivatives in the absence of NusG

Phagec	Burst sizea at 42°C
	NusG present (K9435)	NusG absentb (K9683)
λ	22 ± 7	0.1 ± 0.1
λnin	22 ± 9	3 ± 2
λnusG	72 ± 17	6 ± 4
λcam	68 ± 35	0.2 ± 0.1

^aBurst size is calculated as the number of phage produced per infected bacterium.

^bNusG was depleted as described in the text.

^cAll of these phages have the cI857 allele, which encodes a temperature-sensitive repressor. Since the phenotype imposed by this mutation has no bearing on the results of our studies, we have not included this genotype in the nomenclature of the various phages in the text.