TABLE 2.

Effect of the cAMP-CRP complex on IS2 transposition

Bacterial strain	Transposition frequencya	Relative fold increaseb
TP7811 (WT)c	(1.0 ± 0.3) × 10−5	1.0
TP7839 (Δcrp)	(1.3 ± 0.5) × 10−3	130
TP7860 (Δcya)	(2.9 ± 0.1) × 10−3	290

^aNumbers represent transposition frequencies of IS2 in different hosts and are the means (± standard deviations) of four independent experiments. 

^bFold increase in transposition frequency is relative to that of the mini-IS2 in TP7811, which is set as 1. 

^cWT, wild type.