FIG. 3.

Dependence of Ω4406 expression on fruA and devS. Developmental expression from the 1.0-kb (A) or 0.6-kb (B) DNA segment containing the Ω4406 promoter fused to lacZ and integrated at the Mx8 phage attachment site in the chromosome of M. xanthus wild-type DK1622 (⧫), fruA mutant fruA::TcΩ5 (▪), or devS mutant DK11209 (▴) was measured for three independently isolated transformants (see Materials and Methods). The meaning of points and error bars is the same as described in the Fig. 1 legend. The error bars are too small to be seen for the fruA mutant in both panels.