TABLE 2.

Effects of catM and benA mutations on rates of BenM-independent growth on benzoate^a

Strain	Relevant characteristic(s)b	Generation time (min)c	Lag time (h)d
ADP1	Wild type	60 ± 10	7 ± 0.5
ISA36	No BenM, wild-type CatM	No growth	No growth
ACN558	No BenM, CatM(R156H)	96 ± 8	9 ± 0.5
ACN153	No BenM, CatM(V158M)	93 ± 4	10 ± 0.5
ACN146	No BenM, −40 benA promoter mutation, wild-type CatM	50 ± 11	7 ± 0.5
ACN547	No BenM, −40 benA promoter mutation, CatM(R156H)	59 ± 8	4 ± 0.5

^aProvided as the sole carbon source. When succinate was provided as the carbon source, the growth rates of all these strains were comparable (data not shown).

^bSee Table 1 for genotypes.

^cAverages of three or more determinations.

^dTime between inoculation and start of exponential growth.