Table 1. Sporulation frequency.

Strain*	Genotype	Sporulation frequency
DK1622	Wild type	100†
DK12702	Mx4885::Km	0.2 ± 0.2
DK12703	ΔMx488548–426	0.6 ± 0.8
DK12704	ΔMx488548–123	0.5 ± 0.5
DK12705	Mx4885::Km, attB::pJEL4885.11	184.5 ± 20.1
DK12706	Mx4885::Km, attB::pSWU30	0.4 ± 0.2

^*Strains are described in Table 2

^†The frequency was normalized to that of the wild type (DK1622) measured in the same experiment and set at 100%