TABLE 3.

Effect of selected mutations on expression directed by P_eps fragments with different upstream lengths

Plasmid	Peps sequences fused to lacZ	Mutation	Expression from Pepsa
pPSZ15	−538 to +23	None	2,260
pPSZ15-2	−538 to +23	−67 A to G	195
pEPSM2	−143 to +23	−67 A to G	164
pPSZ15-7	−538 to +23	−72 G to T	262
pEPSM7	−143 to +23	−72 G to T	190

^aExpression from P_eps in wild-type R. solanacearum AW cells carrying the indicated P_eps::lacZ fusion plasmids with the indicated mutations was measured as in Fig. 1 and Table 2.