Table 1.

Sex factor conjugation efficiencies observed with different relaxase variants

Donor strain	SF variant/complementation plasmid	SF conjugation efficiency
NZ9800	SF wild-type	a(7.33 ± 0.58) × 10−3
NZ9800ΔltrB	SFΔltrB	(1.88 ± 1.96) × 10−9
NZ9800ΔltrB	SFΔltrB/pDL-P232-ltrB	(5.80 ± 2.89) × 10−2
NZ9800ΔltrB	SFΔltrB/pDL-P232-ltrB ΔD5	(3.79 ± 1.75) × 10−9
NZ9800ΔltrB	SFΔltrB/pDL-P232-ltrB ΔORF	(1.93 ± 0.96) × 10−8
NZ9800ΔltrB	SFΔltrB/pDL-P232-ltrB Mat−	(2.86 ± 0.86) × 10−4

SF; sex factor.

^aBelhocine et al., 2005.