Table 1.

Effect of pcfG insertional mutagenesis on pCF10 transfer

Plasmid	T/D ratio
pCF10	4.0 × 10−3; 5.7 × 10−2
pCF10::Ll.ltrBΔORF-Kan	<4.6 × 10−8; <1.1 × 10−7
pCF10::Ll.ltrBΔORF-Kan, pMSP3545ltrA (nisin induction)	1.1 × 10−3; 2.6 × 10−2

Transconjugant per donor (T/D) ratios are given from two independent experiments.