TABLE 3.

DNA microarray analysis resultsa

GeneΔphoP (−)/wild (−)ΔphoQ (−)/wild (−)Wild (+)/wild (−)
RatioRatioAvgRatioRatioAvgRatioRatioAvg
ais0.51NDd0.51NDNDNDNDNDND
argD0.55ND0.55NDNDNDNDNDND
carA0.670.610.640.420.400.410.21ND0.21
crcA0.470.770.620.46ND0.46NDNDND
dfp0.640.530.580.560.550.560.270.260.26
dinG0.690.810.750.560.900.730.46ND0.46
gcvT0.770.680.730.600.550.580.330.370.35
gppA0.680.640.660.610.660.630.490.440.46
hemL0.320.410.370.350.350.350.410.440.43
mgrB0.21b0.17b0.19bc
nagA0.550.530.540.590.700.640.520.680.60
phoP0.220.210.210.670.500.590.340.450.40
rstA0.540.460.500.470.290.380.13ND0.13
sfcA0.380.350.360.410.270.340.260.210.24
slyB0.29b0.27b0.28b
srlD0.710.500.600.770.660.710.430.310.37
sucB0.310.250.280.750.560.660.10ND0.10
vboR0.210.120.17NDNDNDNDNDND
xylA0.69ND0.69NDNDNDNDNDND
411#13 b23620.63ND0.63NDNDNDNDNDND
ybjX0.120.100.110.130.090.110.100.180.14
yfcS0.460.940.70NDNDNDNDNDND
yfdC0.57ND0.57NDNDNDNDNDND
ygeW0.23ND0.23NDNDNDNDNDND
yijF0.43ND0.43NDNDNDNDNDND
yrbL0.120.100.110.150.140.150.550.600.58
  • a mgtA was not spotted on the DNA microarray used in this experiment. The symbols + and − mean presence and absence of MgCl2, respectively. ΔphoP, WP3022; ΔphoQ, WQ3007; wild, W3110. The underlined genes were identified as parts of the Mg2+ stimulon. The values shown are individual intensities of duplicate spots and the average of the two preceding values.

  • b The data were obtained with E. coli DNA microarrays fabricated by Mori et al., in which N-minimal medium (3) was used.

  • c —, no experiments were done.

  • d ND, fluorescent signal too weak for detection.