Table 2.

Efficiency of transformation into different sib deletion strains^a

vector	arabinose	MG1655	ΔsibA	ΔsibC	ΔsibE
pAZ3	−	1.6 × 108	5.0 × 107	2.5 × 108	1.6 × 108
	+	1.8 × 108	5.2 × 107	2.9 × 108	1.9 × 108
pAZ3-sibA	−	7.8 × 106	3.6 × 107	2.6 × 106	6.0 × 105
	+	8.8 × 106	2.6 × 107	4.1 × 106	5.0 × 105
pAZ3-sibC	−	1.3 × 106	3.8 × 106	no colonies	6.0 × 105
	+	1.3 × 106	2.1 × 106	1.0 × 107	1.5 × 106
pAZ3-sibE	−	1.1 × 106	4.0 × 106	2.4 × 106	no colonies
	+	2.7 × 106	2.2 × 106	3.8 × 106	2.0 × 106

^aCells were transformed with 1 ng of DNA. Results similar to those observed for ΔsibC and ΔsibE were obtained for ΔsibB and ΔsibD.