TABLE 3.

Expression of lpsS::uidA fusion during log-phase and stationary-phase growth^a

Strain	Fusion	GUS activity during:
		Log phaseb	Entry into stationary phasec	Late stationary phased
Rm1021	None (background)	8.1	ND	7.5
DKR227	lpsS::uidA	3,407 ± 247	3,138 ± 112	3,044 ± 55
DKR50e	SMa21243::uidA	91.5 ± 2.5	119.9 ± 7	403.2 ± 21.2

^aActivity is in Miller units (27). GUS, β-glucuronidase.

^bLog phase corresponds to an OD₆₀₀ of 0.5.

^cEntry into stationary phase corresponds to an OD₆₀₀ of 1.5. ND, not done.

^dLate stationary log phase corresponds to an OD₆₀₀ of 2.5.

^eDKR50 contains a fusion to an ORF (SMb21243) previously shown to be up-regulated upon entry into stationary phase (45).