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Table 4 Cells expressing SOS regulated genes in the recA defective strain RW464

From: Genes regulated by the Escherichia coli SOS repressor LexA exhibit heterogenous expression

gfp transcriptional fusion % of intensely fluorescent cells Fluorescence threshold level* Cell count
caa-gfp (pSC300) 0.075 26 9315
cna-gfp (pSC301) 0.45 26 8938
ce1a-gfp (pSC302) 0.36 26 7253
ce7a-gfp (pSC303) 0.43 26 7050
recA-gfp (pSC201) 1.69 52 5695
lexA-gfp (pSC200) 0.53 52 2823
umuDC-gfp (pSC202) 0.05 24 4004
  1. *Fluorescence threshold level is defined as the point of clear transition from basal level (large majority of cells) to high fluorescence intensity.