TABLE 3.

Effect of rpoB mutations on sporulation at 37 and 48°C^a

Strain	rpoB allele	Sporulation efficiency (S/V)b
		37°C		48°C
		SSM	SSM + Rif	SSM	SSM + Rif
WN547	Wild type	0.79		0.24
WN758	Q469R	0.47	0.52	0.22	0.23
WN759	H482R	0.13	0.12	0.009	0.011
WN760	H482Y	0.55	0.56	0.008	0.004
WN761	S487L	0.55	0.53	0.69	0.67

^aData are averages of two independent experiments which differed by <10%.

^bS/V, spore titer/viable titer, determined at 24 h.