TABLE 2.

Effects of a rimJ mutation on papBA transcription in various mutant strains

Strain	Relevant genotype	β-Galactosidase activitya
		37°C M9 glyc	23°C M9 glyc
DL3052b	papI frameshift mutation	9 ± 0	6 ± 0
CWZ418	papI frameshift ΔrimJ	23 ± 1	11 ± 1
DL2208b	papB CTG start codon mutation	4 ± 0	2 ± 0
CWZ419	papB CTG start codon ΔrimJ	35 ± 4	5 ± 0
DL1910b	Δlrp	4 ± 2	3 ± 2
DL2873	Δlrp rimJ-2::mTn10	3 ± 1	3 ± 0
CWZ410	dam-13::Tn9	73 ± 2	11 ± 0
CWZ411	dam-13::Tn9 rimJ-2::mTn10	68 ± 5	12 ± 1

^aβ-Galactosidase activity is expressed as Miller units (38) and was measured as described in Materials and Methods. Error is expressed as ±1 standard deviation from the mean.

^bβ-Galactosidase activities were previously published (57).