Summary of properties of several ICEBs1 insertions in secondary attachment sites.

asite of insertion of ICEBs1; #mm indicates the number of mismatches between the insertion site and attB (illustrated in Figure 2).bexcision frequency measured as the empty attachment site 2 hrs after induction of ICEBs1 gene expression; normalized to wt; same data as in Figure 3, except that here data is normalized to wt (attB). Excision frequency from attB was 1.ccell viability normalized to ICEBs1 at attB; same data as in Figure 4. Viability of ICEBs1 at attB was 0.9 of uninduced.dexpression of damage inducible gene dinC-lacZ, normalized to that of cells with ICEBs1 in attB; data from Figure 6. ß-galactosidase specific activity of ICEBs1 at attB was 0.3.